Comments by Member 15078716 (Top 71 by date)

Multiple places and multiple correct anwers, I have not even gotten to your answer when I found on https://www.codeproject.com/Answers/5337680/What-is-this-std-istreambuf-iterator-conversion-pr#answer1 two acceptable answers. Without even testing your's I expect it to be correct, and I am moving on to other things already. You get accepted and a 5. Thank you.

You are SO RIGHT ! "If the file is readable and not empty." I checked the file and found that even though I wrote it and checked it a while ago, it was now empty. I had been clearing it in my testing. All the code in the world could not get "hello world" out of "". Thank you. If you had supplied this as a solution, I would have accepted it and given you a 5. Thank you.

It might. But you did exceptionally well answering on that other page. https://www.codeproject.com/Answers/5337680/What-is-this-std-istreambuf-iterator-conversion-pr#answer1 and I thank you for it.

Again thank you. I was feeling desperate. No need, but I had asked so many times in so many other ways and received no answer that my system and compiler worked with. Now I have Thank you.

I got it to work now.

Here is my result:

I often do testing and create a CLI report of results. Then I copy that and keep a final report.



Start of report.

Reading VerifiedToHave_utf8_ByteOrderMark03.txt

Contents are: [Byte Order Mark BOM] then [hello - こんにちは - abc]

The BOM is an unsigned char BOM01[3]{ 0xef, 0xbb, 0xbf }

So, I should see as the first byte: [0xef]

Using printf ---------- data = ["∩"]
Using cout ---------- data = [∩]

If data = [∩] then that is the correct ''symbol'' for here.

The first byte ''symbol'' of the file is [∩]

Now testing to get the Hex of the first byte in two different ways:
Verified that data= [∩] as a symbol.

test 1 Hex = [ef] as a Hexidecimal.
test 2 Hex = [ef] as a Hexidecimal.

Attempting to convert the first byte to binary:

test 3 Binary = [11110111]
Or nibble [1111] and then nibble [0111]

This is correct.

End of report.

It works now.

Thank you.

You both helped. I had to make a some changes, but you pointed me in the right direction and I saw some syntax errors that I was (I guess) using over and over again without noticing it. You both get Accepted.

Plain syntax error. I got it now. It works. Thanks so much.

You both helped. I had to make a some changes, but you pointed me in the right direction and I saw some syntax errors that I was (I guess) using over and over again without noticing it. You both get Accepted.

Of course I did not work on this every day for 3 years, but occationally over 3 years. Yes, I had mapped out this program more than 3 years ago, and I expected to need a custom testing system. So, I guess that this started before that. I just had other things that got my attention along the way. At this time, I feel ready to code in a massively capable commercial program and as I do that I want to have a running seperate report of clear down into the bits of what is happening in some areas of the program while it is being developed. I had been coding for the rest of the program, and it was getting so vast that I occationally lost my place in it. So, I decided to write a program to analyze where I was in the code and report to me what the results were. For example, 8000 purchases happening nation wide at near to the same time, with a potential of seperate uses of the same credit card number in multiple different locations more than 10 miles apart. How to code for this: code and test and test and test. This which you helped me with can be used in that testing. I have been studying how fast various codes run and I think that this is rather quick. Thank you both.

Oh, and there is more that you helped me with:

I can now bitwise analyze packets sent and received via network communications. As you might know, a ping is not always just a ping. It can be, and has been reported to include, years ago, an entire communication transfer within itself.

I can now bitwise analyze a hard drive and uncover [lets skip that for now].

I told the guys here in some other post that I left Visual Studio for C and C++. These are some of the things that I left VS for: more intricate near-real-time testing of on-going program development, and deeper analysis of software and computer communications. I do not use third party test analysis as they have not proven to supply me with what I wanted.

Thank you.

Thank you.

Thank you.

I tried over many hours and did not get this to work.

I want to read the first three bytes of a file. I do not care if it is BOM or not BOM. I do not care about that. I want to read the first byte and see the bits of that byte. Then seperately the second byte, then seperately the third byte. Your code looks nice and I have studied it until I am exhausted and I have tried many different ways to adjust it to do as I am requesting, and it does not work: I get error error error.

Help ! Please.

It does not compile. I get errors, and no matter how I adjusted this, it did not compile.

This line:

	std::ifstream* iStream = new std::ifstream(pszFilename, std::ios::in);

gives me this error:

error: no matching function for call to 'std::basic_ifstream<char>::basic_ifstream(const WCHAR*&, const openmode&)'

I have studied it and tried changing it lots of ways but it does not compile. Just gives me some error. I study that and try what I read then get another error.

I am just trying to read the first three bytes in a file one at a time from that file. I want to see the bits of those bytes, one byte at a time and one bit at a time from those bytes.

Help ! Please.

I did not mean that as a negative. I still have great confidence that you at least were pointing me in the right direction. I shall study again what you wrote.

Thank you.

Well, lets see how this works: I got a -16 Authority Answer Downvoted for this. I must be seen as a terrible threat to that person. I read fear in that vote. I read unconstrained terror in someone voting a -16 downvote. That happened before when I quoted the rules of this site to someone that was being insulting.

At the level of a 16 +- they should be able to "edit the question" as it says at the bottom this page. But, no, that person seems to have been so afraid that they wet their pants pissing that -16 at me.

I suggest to them that they read the rules and when a newbee to this site makes a mistake then they just comment that it is not proper and then move on.

And, lets get to the point of this: I have read a lot of discussions and have seen that many thousands of other people have read those discussions and answers and etc. and rarely, almost NEVER does ANYONE upvote that they liked the answers or comments. To me those readers might be lurkers, sucking on this web site's years of hard work to read or at least be entertained by this site while very rarely giving anyone else some modicum of credit. I have asked for that a couple of times. I got pissed at for bringing up the need for at least some response. I think that I should maybe post that request more often, especially if it brings to the fore the lurker drain on this site.

Thank you for your opinion.

OK, so Mr. 622,947 points and multiple times MVP, you did not give the question any good solid explained answer, you left the person with nothing, not even a comment, but I, a newbee, tried to answer it in a useful manner. So, you have me thinking that you are so smart, I read your stuff (some of it), and I would like to know technically or semi-technically what you think exactly is correct and/or incorrect about my answer.

Please try to get that answer before I get kicked off of this site for pointing out their lurker drain and after I pointed out their insulter barrier to new questions.

Thank you.

I am trying one solution at a time.

I have been getting compiler errors with this. I have been trying to work through them for about 4 hours. It is getting late and I might try this again tomorrow. Your code has given me a lot to re-study. I think that I tried your way before and could not get it to work. But, I will be trying again.

Thank you.

Thank you. Please see my answer to Kave Kreskowiak.

Maybe change

hFile = CreateFile(TEXT("D:\\EventsLog.txt"),FILE_APPEND_DATA, 0, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);

to

hFile = CreateFile(TEXT("D:\\EventsLog.txt"),FILE_APPEND_DATA, 0, nullptr, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr);

Maybe. Maybe not.

I ran this through my GCC 5.1 compiler and had so many errors and warnings that I gave up on it.

I don't know what to tell you now.

OK, I do know what to say, listen to Richard MacCutchan, I do.

OK, and I suggest using nullptr instead of NULL where you can to increase executable efficiency.

Thank you.

You might not have everything working, but what you have done so far I consider impressive. I think that I have learned from it.

Thank you.

Thank you for pointing that out. Thank you. I shall work at not making that mistake again.

I am trying to read (one byte at a time) a txt file that I created with some random text editor and saved to my drive.

This question now has had the attention of two (in my opionion) super-coders. I hope that I will be getting a detailed answer to my question.

Thank you.

- - - - - - - - - -

I have the file xyz.txt
That file contains the following: Some text again.

In bynary this is
01010011 01101111 01101101 01100101 00100000 01110100 01100101 01111000 01110100 00100000 01100001 01100111 01100001 01101001 01101110 00101110

The letter S is
01010011

The letter o is
01101111

the letter m is
01101101


But, if the file has a byte order mark at the beginning of the file which signifies UTF-8 then the first three bytes should be
11101111
and
10111011
and
10111111
which can be an unsigned char BOM01[3]{ 0xef, 0xbb, 0xbf }


If I just read the file's text, then I miss the BOM of the first few bytes, whatever that is.

And, if there is no BOM, and if there is some other binary representation at the beginning of the file, while allowing readers to read text easily, then I miss that also by reading just the text.


So, the simple question has been asked, what is the first byte of the file, then after that is found what is the second byte of the file, then after that is found what is the third byte of the file.

I want to learn the logic of getting the first three bytes of the file, one at a time, irrespective of all of the other bytes of the file.


- - - - - - - - - -

For some readers of this question that might have missed this:

I am NOT (get that? NOT!) wanting to get the BOM of the file. I AM specifically wanting to get the bytes of the file one at a time from the file without reading ANY of the rest of the file.

- - - - - - - - - -

And if you have a better way of doing this (without boost) and are willing to show me code that actually does this (getting those bytes as described) then please post it here.

Again, thank you.
I

Thank you.

I tried to do that but somehow I did not get it to work. I will try again.

I have tried the following but none of them work. I get errors for each.

BYTE SomeVectorBuffer = ( std::istreambuf_iterator<BYTE>(SomeStreamOfTheFile));

BYTE SomeVectorBuffer = ( std::istreambuf_iterator<byte>(SomeStreamOfTheFile));

byte SomeVectorBuffer = ( std::istreambuf_iterator<BYTE>(SomeStreamOfTheFile));

byte SomeVectorBuffer = ( std::istreambuf_iterator<byte>(SomeStreamOfTheFile));



Thank you.

Thank you. I liked your answer.

Thank you.

Changed to

and if the result is less than zero or equal to zero, it is am (or morning),
else it is pm (or evening).

Thank you.

@Shao Voon Wong, Nice. I had not seen this before. I looks useful. +5 to you if I could figure out how to give it.

@Dave Kreskowiak, OK now I see logic to keeping a messed up question on the system.

I could have simply added at the beginning something like, "Oops. Did not mean to keep this question, but if someone wants to answer, nicely, then that is OK."

Thank you.

@Dave Kreskowiak, No. It is not rude. It was my question, not your's. I gave two examples, which I know the second is illogical, therefore no need to even ask about it. It is rude of you to interfere in someone else's question. An edit is fine and within the scope of this site. I wrote the question wrong. I noticed my mistake was illogical and it was wrong enough that I did not want to ask it. That does not call for an "edit". It calls for removing the question EVEN if some spammer posted to my question and did not even come close to answering it.

Furthermore:
At the bottom of this page it says, "Read the question carefully",
and "Insults are not welcome",
and "Provide an answer or move on to the next question."

You said, "There are no problems with GetFileSize and GetFileSizeEx on machines." So, OK. That is nothing new to say and it does not explain your non-answer as to which is better. I did not say that my machine had problems with these. I said, "I am using GetFileSize instead of GetFileSizeEx because my setup has difficulties with GetFileSizeEx. I know that Microsoft says, "It is recommended that you use GetFileSizeEx." But, it does not work well for this setup." Get it? Can you read or do you just spam with fast blather to get more points on this site?


You said, "The difference between the two is GetFileSize will only return an unsigned, 32-bit value, thus there's a limit to the size of the file it can return, 4,294,967,295 bytes. The Ex version returns a LARGE_INTEGER structure, which is two DWORDS." That has nothing to do with what I asked. That did not support your non-answer.

You said, "The only problem with using it would be the code you're writing to use it, not system related." I was not using GetFileSizeEx in the code of the question part. Again, are you simply blowing hot air to get some more points on your total for answering another question, although very wrongly answering? Again: That has nothing to do with what I asked. That did not support your non-answer.

You said, "As for the two types you're using, PDWORD and &DWORD, there is no difference. PDWORD means "pointer to a DWORD", or the address of a DWORD variable. &DWORD means essentially the same thing. It's an address of a DWORD." I already said that a PDWORD is, "a pointer to a DWORD". Again: That did not support your non-answer.

You have still not given a simple chosen answer. It was so easy. The second example, as CPallini said, "On the other hand, PDW_002 is an uninitialized pointer (i.e. points to garbage)." I was asking about my choice of those two. I have found that the uninitialized pointer was giving me nothing in return.

CPallini chose and gave logic that readers years from now may benefit from. You did not choose. You plagerized my question in your make believe support to a non-choice and you have still not chosen. -5 to your answer. -5 to your rolling back my question.

I think that you are a spammer Dave Kreskowiak.

No thanks for your answer.

@CPallini, To the point and you explained very well.

Thank you.

@merano99, Thank you for your input and observations. I have found that using multibyte strings with this setup is interesting.

I cannot use (or at least the combination setup is resisting it)
.imbue which gives this compiler problems, or
mbstowcs which gives this compiler problems.

Getting close to the answer. Thank you. Your input is appreciated.

@Daniel Pfeffer, I have been and I am using windows.h . Thank you for giving that as part of your logic.

Limited to this setup, and not as a general statement, I do not agree that setlocale() is "as" compiler-dependent as it is system local dependent. But, my use of GCC 5.1 via this IDE and system has been causing me some problems that I am working around. The books are nice, the documentation is fine, but if the combination being used ignores them, then work around it. That is what I am doing.

.imbue gives this compiler problems.
mbstowcs gives this compiler problems.
I am using this compiler by choice becuause it fits with the system that I am using and the old hardware that I am coding for. I am almost required to use this setup. Again, I am looking for work-arounds. I have found work-arounds for a lot of other problems that this combination has given me. I, with help, will get this one also.

Thank you. All of the input from all of you is appreciated.

@merano99, My compiler settings are specifically to utf-8 and I have the following as the first two lines of my program:

#define _UNICODE
#define UNICODE

In Code::Blocks 17.12 :
I have in Settings / Editor (Configure Editor) / General Settings / Encoding settings / UTF-8
and, "Use this encoding" / "As default encoding (bypassing C::B's auto-detection)"
and, "If conversion fails using the settings above, try system local settings."

Is that what you are talking about?

@Daniel Pfeffer, I think that I have had difficulty geting this compiler GCC 5.1 to work with WideCharToMultiByte and MultiByteToWideChar. And Microsoft does not seem to have such great compatibility with C++11/Unicode/utf-8 all combined. You said that it is possible to do this in standard C. I am interested in that.

Currently the following seems to be indicating that I am getting the conversions at least close.

const wchar_t* FromTextFile = reinterpret_cast<const wchar_t*>(lpBuffer);

MessageBox(nullptr, FromTextFile, FromTextFile, MB_ICONEXCLAMATION | MB_OK);

Thank you.

@ CPallini, why did you chose BYTE buffer[1024]; ? I am guessing that you said that so that later I could trim down the buffer to fit: I am currently looking into that.

I added your code then added the following:

const wchar_t* FromTextFile = reinterpret_cast<const wchar_t*>(lpBuffer);MessageBox(nullptr, FromTextFile, FromTextFile, MB_ICONEXCLAMATION | MB_OK);

Which gave me a message box with the following:
hello - J - こんにちは - abcdefghijklmnopqrstuvwxy[with about 10 more Asian characters and a little r at the end]

I had written in the txt file the following:
hello - J - こんにちは - abcdefghijklmnopqrstuvwxy

I have not yet found documentation on how to read the total character length of the utf-8 file including all possible 17 planes. I think that I might also have to account for some null or 0 characters at the end, maybe. I am looking into this now. Almost got it. Thank you.

Thank you.

I use auto when I have to.

It does come in handly when I am struggling to grasp what is the correct type and at the same time understand why that type should be the one that I use. If I put in auto, then I can mouse over the code and get what the compiler has guessed is the most correct. Then I can hard code that type in so that later, when reading the code, I can see the type instead of it being hidden behind the word auto.

I agree that auto has it's uses. I just do not like it's hiding the type from me in a quick read of the code.

It was, to me, an important enough topic that I searched and found it and some like it. I just thought that others might benefit from what I said. I could be wrong.

@CPallini, Thank you.

I think that I shall place the CreateFile, with the WriteFile, etc. all in a function so that NumberOfBytesWritten is gone when the function closes. That is what I thought to do, but I wanted to see what others thought of that. Thank you.


Thank you.

@nv3 - He already said that he is using Code::Blocks, which as a debugger that can show up while the compiler is running and if it finds a problem which stops the compiler then the response is the first line and he does not have to step through the debugger line-by-line for that. It often does not tell you what is wrong. It tells you what the compiler had issues with as far as syntax is concerned. It does not tell you if your operating system has a problem with your code. It does not tell you if the file that you are reading is encoded wrong. It does not tell you if your code, which might work well on other systems, does not work well on the system that you are currently using.

"You will need this technique in the years to come many times. So, why not getting used to the debugger right now ?" That is an assumption that he does not do that already and a premeditated assumptive insult to him. Do not do that. It makes you look petty. At the bottom of this page it says, "Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question."

@nv3 - He already said it. "Hi I am really having trouble dealing with adding unicode support to my code". Or are you simply posting that question to add to your total posting count? I am gessing that you are.

You did not address the question.

Please re-read the question. "Should I clear the lpnumberofbyteswritten ?"
I reiterate to be more clear to you: Yes or No; then, why do you think that?

"DWORD NumberOfBytesWritten is a declaration of a variable."
That's nice, but I already knew that and it was not what I asked. It is not an answer. It is not even close to an answer, but I will accept it as you explaining your answer.

"Under C you get rid of them again if you use them in a function."
That's nice, but that is no different from what I said in describing my question. It is not an answer. It is not even close to an answer, but I will accept it as you explaining your answer.

"A distinction is made between local and global variables, [...]".
That's nice, but I thought that was really obvious to someone reading my question. Again, It is not an answer. It is not even close to an answer, but I will accept it as you explaining your answer.

"C++ offers a lot more here."
Not always. I have never (never ever never no way no how never) found a way to create a text file with Unicode in the name on this old Windows system with this one chosen IDE and compiler that I am sticking with. You told me how to do that in C. So this part of the answer is not quite seen as being a boolean of true.

"Alternatively, you can often just use curly brackets to define a block."
That's nice. But, it would seem obvious that I already know that from looking at the code which you so well answered in one of my previous questions. It is not an answer. It is not even close to an answer.

"And please read the basics, we can't explain everything you need to know here."
A sp*incter says what? You did not address the question. You proceeded to assume, then to insult. Please do not do that. I asked a question. I explained enough for a logical answer. Let's go back to that.

Please stick to the questions that are asked and do not make personal comments about other people. At the bottom of many of codeprojects' pages is this line, "Insults are not welcome."

So far you expained your answer, which you did not give; then you insulted. I know that you can do a lot better as I have seen it.

I accepted Greg Utas' answer because I asked, "Just this one boolean. Not a general question."

But, later when I read Patrice T's answer, it is what I had been doing in my final code a lot before this. I got something to work, then went back and declared each variable with no initialization, then gave some of the variables a starting value. That seemed logical to me. Now, both ways seem logical.

But, merano99 pointed out that in this case I am working with a "Windows system call" Writefile(). I already knew that. But, it is OK to say it. All three ways did and still do seem logical.

Here is where I am in this:

(1.) Writefile() is a "Windows system call" - - - merano99.
I was already using this as a foundation in this decision.

(2.) For variables: declare; then store; then use. "No exeption" - - - Patrice T.
That agrees with what I was already doing (when I later cleaned up my code).

(3.) "When unsure, it's good practice to initialize. There's no harm in doing so." - - - Greg Utas.
He said this first, so it is not just some copy of what either of you said. Again, that agrees with what I have been doing (later when I cleaned up my code) in general.

Unless someone gives me compelling logic to do otherwise, I intend to try to award all three of you with accepting your answers.

It is a simple question but I found it so potentially complicated to answer that I did ask it. Now I have three answers that each to some extent are acceptable.

Thank you.

I was referring to being prompted to study the logic for the PDWORD as used in WriteFile. I think that I now better understand some of it.

"I would recommend improving C or C++ a bit" You would have to talk to Bjorne about that.

My problems are with my compiler. From what I have read and with some other compilers being able to handle what I have been asking for help with.

Please stick to the questions that are asked and do not make subjective comments about other people. At the bottom of many of codeprojects' pages is this line, "Insults are not welcome."

Thanks to all.

Thank you.

I do not like auto because it is less direct. The compiler makes a guess as to what bErr is and I prefer to know what I am sending and getting on both sides of the = sign.

But, your answer is helpful and complete. Thank you.

THANK YOU !

I remembered that Notepad seemed to handle unicode (and other things) differently than WordPad in the past. I decided to try Notepad to see if there was a difference. There is. Now I know that I was actually creating a unicode capable text file and actually writing unicode to that text file, but I could not see it because I was looking at it with WordPad.

THANK YOU AGAIN ! ! !



When I open the txt file with Microsoft WordPad I get :
h e l l o - J s0"0k0a0o0 - a b c d e f g h i j k l m n o p q r s t u v w x y

WRONG and Not usable. (https://www.codeproject.com/Questions/5336155/Why-is-notepad-not-showing-unicode-correctly)



When I open the txt file with Apache Open Office Writer 4 I get :
h#e#l#l#o# #-# #J# #-# #S0�0k0a0o0 #-# #a#b#c#d#e#f#g#h#i#j#k#l#m#n#o#p#q#r#s#t#u#v#w#x#y#

WRONG and Not usable. (https://www.codeproject.com/Questions/5336156/Why-is-apache-openoffice-writer-4-not-showing-unic)



When I open the txt file with Microsoft Notepad I get :
hello - J - こんにちは - abcdefghijklmnopqrstuvwxy

RIGHT and Usable.



To make certain, here is my code and please tell me if it is correct now.

    HANDLE hDFile = CreateFile(L"utf8_UsingByteOrderMark_C_天堂.txt", GENERIC_READ | GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);

    DWORD NumberOfBytesWritten;

    BOOL bErr = 0;

    unsigned char BOM[3]{ 0xef, 0xbb, 0xbf };    // Write the BOM first. Do NOT write the BOM as part of the wstring or wchar_t which is item 2 of the WriteFile.

    bErr = WriteFile(hFile, (LPCVOID)BOM, (DWORD)sizeof(BOM), &dwBytesWritten, NULL);

    // Write the rest of the text; L"..." etc. AFTER writing the BOM.

    bErr = WriteFile(hDFile, L"hello - J - こんにちは - abcdefghijklmnopqrstuvwxyz", 90, &NumberOfBytesWritten, NULL);

    CloseHandle(hDFile);

Can I give full credit to both of you for giving me help this time? You both guided me to various study topics that I have read and learned from.

This is a great site. I like codeproject.com .

I tried that, it did not work.
I think that I should try to simplify this so that I might understand it better.
I put together what I am being told into the following which again "almost works".

You will notice that I hard coded values in. That is to make certain that the desired values are getting to the correct place in the code. If I should not do this, then please tell me.



HANDLE hDFile = CreateFile(L"utf8_UsingByteOrderMark_C_天堂.txt", GENERIC_READ | GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);

DWORD NumberOfBytesWritten;

WriteFile(hDFile, L"\xef\xbb\xbf - hello - J - こんにちは - abcdefghijklmnopqrstuvwxyz", 100, &NumberOfBytesWritten, NULL);



The file name saves fine. Thank you so much.

Inside of the file is the following:


i ^^ ? - h e l l o - J - S0“0k0a0o0 - a b c d e f g h i j k l m n o p q r s t u v w x

The size 100 is just a test to see how many bytes that is in the output to the file.The unicode text in the file seems to be not reading the BOM as an actual BOM, just a bunch of characters, and the text こんにちは becomes S0“0k0a0o0 .

Almost, but not there yet.

Again, thank you *ALL* for helping me.

When I use
Copy Code

bErrGHJ = WriteFile(hDFile, LpAll, Bytes_that_need_To_Write - bytes_which_have_written_already, &bytes_which_have_written_already, NULL);

My program will not close and I have to force it closed with control alt delete.

Just one change, adding that & did something. I had a DWORD before and changed it to PDWORD and then I cannot close the program normally.

And now I noticed that it also uses 100% CPU constantly even before I try to close it.

I think it is in a continuous loop. I do no understand how bytes_which_have_written_already is calculated. I am not certain how to measure this or how to code this in

__________

I fixed some things, and forced the loop to stop. But now the file has "ï»" in it instead of "XYZ".

I think that this is getting closer, but it is still not working.

Here is my current code:

//Create a file that has a BOM for utf-8
DWORD dwBytesWrittenXPP = 0;
BOOL bErrGHJ = 0;
TCHAR *flename = TEXT("utf8_ByteOrderMark.txt");


DWORD Bytes_that_need_To_Write;
DWORD bytes_which_have_written_already = 0;

int CountIt = 0;

while (bytes_which_have_written_already< Bytes_that_need_To_Write )
    {

        if (CountIt > 50)   // To stop some loop until I can fix it.
            {
                break;
            }

        HANDLE hDFile = CreateFile(flename, GENERIC_READ | GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
        unsigned char BOM48[3]{ 0xef, 0xbb, 0xbf };

        wstring write_stuff77 = L"XYZ";

        // Convert to two LPCVOID.
        LPCVOID Nf1 = (LPCVOID)BOM48;
        LPCVOID Nf2 = (LPCVOID)&write_stuff77[0];

        // Convert to two wide strings.
        wstring wstrFirst(static_cast<const wchar_t*>(Nf1));
        wstring wstrSecond(static_cast<const wchar_t*>(Nf2));

        // Concatenate the two wide strings.
        wstring wstrAll = wstrFirst + wstrSecond;

        // Convert combined wstrings to LPCVOID.
        LPCVOID LpAll = (LPCVOID)&wstrAll[0];

        wchar_t need_to_write_Bytes = wstrAll.size() ;
        Bytes_that_need_To_Write = sizeof (need_to_write_Bytes ) ;

        
        bErrGHJ = WriteFile(hDFile, LpAll, Bytes_that_need_To_Write - bytes_which_have_written_already, &bytes_which_have_written_already, NULL);

        bErrGHJ = CloseHandle(hDFile);

        CountIt = CountIt + 1;


    }

I am trying to use what you wrote, and I have been studying it, and I think that I got it close, but I need some help.

Here is my code for now:

DWORD dwBytesWrittenXPP = 0;
BOOL bErrGHJ = 0;
TCHAR *flename = TEXT("utf8_ByteOrderMark.txt");


DWORD Bytes_that_need_To_Write;
DWORD bytes_which_have_written_already;

while (bytes_which_have_written_already< Bytes_that_need_To_Write )
{

    HANDLE hDFile = CreateFile(flename, GENERIC_READ | GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
    unsigned char BOM48[3]{ 0xef, 0xbb, 0xbf };

    wstring write_stuff77 = L"XYZ";

    // Convert to two LPCVOID.
    LPCVOID Nf1 = (LPCVOID)BOM48;
    LPCVOID Nf2 = (LPCVOID)&write_stuff77[0];

    // Convert to two wide strings.
    wstring wstrFirst(static_cast<const wchar_t*>(Nf1));
    wstring wstrSecond(static_cast<const wchar_t*>(Nf2));

    // Concatenate the two wide strings.
    wstring wstrAll = wstrFirst + wstrSecond;

    // Convert combined wstrings to LPCVOID.
    LPCVOID LpAll = (LPCVOID)&wstrAll[0];

    wchar_t need_to_write_Bytes = wstrAll.size() ;
    Bytes_that_need_To_Write = sizeof (need_to_write_Bytes ) ;

    bErrGHJ = WriteFile(hDFile, LpAll, Bytes_that_need_To_Write - bytes_which_have_written_already, bytes_which_have_written_already, NULL);
)

bErrGHJ = CloseHandle(hDFile);

For that almost last line (bErrGHJ = WriteFile(hDFile, ...) I get:
error: invalid conversion from 'DWORD {aka long unsigned int}' to 'PDWORD {aka long unsigned int*}'

I have a further question. It is at
https://www.codeproject.com/Questions/5336001/Include-a-BOM-byte-order-mark-utf-8-the-saved-text

Ok I added the following :

wstring write_stuff = L"I am Happy";
DWORD dwBytesWritten = 0;

TCHAR *fname=TEXT("A_Unicode_WriteSTuff_天_file.txt");
HANDLE hFile = CreateFile(fname, GENERIC_READ | GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
//BOOL bErr = WriteFile( hFile, DataBuffer, dwBytesToWrite, &dwBytesWritten, NULL);
BOOL bErr = WriteFile( hFile, (LPCVOID)&write_stuff[0], sizeof(wchar_t)*write_stuff.size(), &dwBytesWritten, nullptr);

In winbase.h I found "#define CreateFile CreateFileW" so, I do not have to write "W". I guess that makes it work for wide and non-wide both.

I put in GENERIC_READ | GENERIC_WRITE because I want to read it later.

I put in CREATE_ALWAYS because I want to edit the file later. I plan to read it into a wstring, or a const wchar_t*, or a wchar_t ...[], then edit what I read, then overwrite the file with the result.

It gave me a new file A_Unicode_WriteSTuff_天_file.txt which is part of what I wanted: Unicode in the file name. You made it work and in C. Thank you. You explained for the world to see what I am struggling with in using CodeBlocks, which I like a lot. Thank you.

But,

Opening the file with Microsoft Wordpad I get the text "I a m H a p p y " .

Opening the file with Apache OpenOffice 4.1.2 I get the text "I# #a#m# #H#a#p#p#y#" .

Opening the file with Microsoft Word (2000) I get a message box with the following:
The document name or path is not valid.
Try one or more of the following:
* Check the path to make sure it was typed correctly,
* On the File menu, cick Open, Search for the file using this dialog box.
("...A_Unicode_WriteSTuff_?_file.txt")

Opening the file with FireFox (a web browser) I get the text "I a m H a p p y " . (not exactly but similar)

Question: Is this an indication that something is wrong with how the text is being sent to it?

Code::Blocks 17.12
Build: December 2017
File Version: 17.12.0.0
C compiler: mingw32-gcc.exe
C++ compiler: mingw32-g++.exe

__________

I have now tried:

wchar_t* test1 = TEXT("A_Unicode天file.txt");
wstring test2(test1);
out.open(test2, ios::out);

I get:

error: no matching function for call to 'std::basic_ofstream<wchar_t>::open(std::__cxx11::wstring&, const openmode&)'|

With either

out.open(TEXT("A_Unicode天file.txt"), ios::out);
or
out.open(L"A_Unicode天file.txt", ios::out);

I get:

error: no matching function for call to 'std::basic_ofstream<wchar_t>::open(const wchar_t [19], const openmode&)'|

Can this be done in a windows batch file (*.bat) and if so then I can try to run that from my program.

I can type in the file name with the Unicode symbol in it directly. So, it is (seems) logical that I should be able to do that with C or up to C++03 code. Windows 2000 used Unicode. Way back in Visual Studio 6 Unicode was used. It has to be there. C or up to 03 should be able to make it work.

How?

__________

What if I convert the file name to binay and then save the file with a name that is being sent as binary. I do not know how to do that, but it is an idea for a workaround.

?

__________

Maybe I should be sending a wstring instead of a const wchar_t* . Would someone tell me how to convert from a const wchar_t* to a wstring? I looked it up did not find a way (yet).

Thanks.

I have now tried

std::wofstream out;
//ofstream out;

I get the same error messages.

__________

I tried putting the file name in directly, as thus

//out.open(nameFile.c_str(), ios::out);
out.open(TEXT("A_Unicode天file.txt"), ios::out);

but that gave the same error messages.

__________

I tried adding the following to the compiler flags

-std=gnu++11

but that gave the same error messages.


Thank you.

When I use -std=c++98 a file (c++0x_warning.h) opens up and the following is highlighted :

#if __cplusplus < 201103L
#error This file requires compiler and library support for the \
ISO C++ 2011 standard. This support is currently experimental, and must be \
enabled with the -std=c++11 or -std=gnu++11 compiler options.
#endif

__________


When I use -std=c++11 , or -std=c++14 , or -std=c++0x (aka C++11) , or -std=c++1z (aka C++17) I get the following which shows up in the compiler messages :

error: no matching function for call to 'std::basic_ofstream<char>::open(const wchar_t*, const openmode&)'|

__________


I am doing a lot of testing and I have the following at the beginning of my code which I think might have covered the code that I am now testing. If it does not, then please advise me of what does.


#define _UNICODE
#define UNICODE

#include <string>
#include <iostream>
#include <windows.h>

#include <locale>
#include <string>
#include <codecvt>
#include <fstream>

#include <cerrno> // For reading and writing to files using C++ streams. https://insanecoding.blogspot.com/2011/11/how-to-read-in-file-in-c.html

#pragma comment(lib, "wininet.lib")
#include <winsock.h>
#include <winsock2.h>
#include <wininet.h>

#include <time.h>

#include <wchar.h>

#include <stdio.h>
#include <stdlib.h>

#include <cwchar>

#include <stddef.h>

#include <bitset>

#include <cstddef>
#include <cstring>

#include <algorithm> // For std::transform

#include <sstream>
#include <string>
#include <cstdint>



// Windows API only, pre C++11 implementation.

#include <stdexcept>
#include <vector>

using std::runtime_error;
using std::string;
using std::vector;
using std::wstring;


using namespace std;

// https://stackoverflow.com/questions/56843413/stdbyte-is-not-member-of-std
// "It is undefined behavior to add declarations or definitions to namespace std or to any namespace nested within std, with a few exceptions ..."
// This is "only a workaround not a good solution".

namespace std {
enum class byte : unsigned char {};
};


__________

Thank you for your help.

Thank you.

I get the following:

wstring nameFile = TEXT("A_Unicode天file.txt");

ofstream out;

out.open(nameFile.c_str(), ios::out);

/*main.cpp|error: no matching function for call to
'std::basic_ofstream<char>::open(const wchar_t*, const openmode&)'|*/

out.write(M23.c_str(), M23.length());

out.close();


Getting closer. Thank you.

Reference: http://www.charlespetzold.com/etc/DoesVisualStudioRotTheMind.html

A quote that might help you to understand, and you might enjoy reading the entire page after this:

" The Pure Pleasures of Pure Coding

A couple months ago — perhaps as an antidote to all this highfalutin Windows Forms and Avalon programming I’ve been doing — I started coding in C again. Just a little bit. A magazine I read — the British weekly New Scientist — runs a tiny regular feature called “Enigma,” which presents a little math puzzle. Here’s a particularly short one from this past June: “What is the largest integer whose digits are all different (and do not include 0) that is divisible by each of its individual digits?”8 If you solve one of the Enigma problems, you can send in your solution, and one is chosen at random on a particular date, and if yours is picked you get 15 pounds and a mention in the magazine.

These Enigma problems have actually annoyed me for years because they always seemed solvable by writing a short program and testing out the possibilities, and for some reason that seemed absurd to me.

A few months ago I decided it might actually be interesting solving the problems with code, and then posting the programs and solutions on my web site the day after the deadline, but about a week before the answer appears in print.

I decided to use plain old ANSI C, and to edit the source code in Notepad — which has no IntelliSense and no sense of any other kind — and to compile on the command line using both the Microsoft C compiler and the Gnu C compiler.

What’s appealing about this project is that I don’t have to look anything up. I’ve been coding in C for 20 years. It was my favorite language before C# came along. This stuff is just pure algorithmic coding with simple text output. It’s all content.

I also discovered is that the problems do require some thought before you code them up. Very often, the total number of combinations is prohibitive. You really have to whittle them down. You don’t want to write a program that runs for a week before getting to the printf statement. For example, take the problem I quoted: “What is the largest integer whose digits are all different (and do not include 0) that is divisible by each of its individual digits?” It really helps to realize that this integer cannot contain the digit 5 if it also contains any even digit, because then the number would be divisible by 10, and the last digit would be 0, which isn’t allowed. So, the number we’re looking for probably doesn’t include 5. That immediately reduces the possibilities by an order of magnitude.

Even after this preliminary process, there’s still coding to do, but there’s no APIs, there’s no classes, there’s no properties, there’s no forms, there’s no controls, there’s no event handlers, and there’s definitely no Visual Studio.

It’s just me and the code, and for awhile, I feel like a real programmer again. "

I did not say that a console will not handle a large volume of text. You need to learn to read. You need to pay attention to the conversation. I said "except that it would not be able to handle the volume of text as I want in the manner that I want and report it as I want." There are no commas in that sentence. There are no delimators in that sentence. It is a complete multi-conditional. Pay attention to what you are reading. The desired result is better in WordPad.

No. Windows SDK is not my only option. Are you so mentally challanged that you can not see past Microsoft holding your hand with Windows SDK? Do you fear falling down the rat-hole that your ignorant bias has dug? And, it is not a "we" that are answering from your childish mind. You are not a "we". No matter how your imagination entertains that misappropriated thought.

Get back to reality, leave Microsoft's cripples, and make useful suggestions.

Thank you.

Rick York, I know from lots of your other posts that you and OriginalGriff are really smart at code. What do you think about if I were to subclass Wordpad and use it that way? Don't be so politically correct. Would subclassing do it? Suggestions, please.

A console window. Not a bad idea, except that it would not be able to handle the volume of text as I want in the manner that I want and report it as I want. So, maybe you might have told Ford years ago, if you lived back then, that hitching up teams of horses to boxes on wheels would be a better way to mass-produce. You have done very nice elsewhere in your posts, but you failed in this one. And, Windows SDK is certainly not a very viable option even with the mindset of Visual Studio's cripples.

Thank you Rick York for your opinion, but you sound like you might have told Ford years ago a similar thing if you lived back then. "an absurd thing to even attempt." Yet billions of people today can thank Ford for not accepting the advice of the weak minded.

edittted

Thank you OriginalGriff for your opinion, but you did not even slightly answer my need. Not even close. You gave a biased assumption as to what I am trying to do. You attempted to insult my activity choice by assuming that I did not understand the use of a debugger. Wrong. And wrong. Sending to a file is the wrong answer. I did not ask how to send to a file for later viewing. I am trying to code a semi-realtime viewer of some of the chosen activities of my program. I know what a key logger, etc. is from a Visual Studio perspective. You assumed that I might want to go from C++ to a crippling almost anti-coding platform like Visual Studio. Your assumption was wrong. I have placed together Visual Studio's pre-cast blocks in the past many times due to it's Rapid Application Development (RAD) environment. But, I am tired of that and I am attempting to program like a "real" programmer with C or C++. I came here reading your posts (OrininalGiff) and considering you a valuable resource for logical code, but you let me down a long way on this one response. Please stick to the subject and if you are willing to help me leave the confines of the Visual Studio cage, address my request. Thank you.

Is your example more cross platform than using

HBITMAP hbm1 = CreateCompatibleBitmap(hdc, prc->right, prc->bottom);
SelectObject(hdcWorkingBackBuffer, hbm1);
DeleteObject(hbm1);

?

And, would your example use more cpu and/or memory?

Thank you.

Thank you. I still do not know why when I have this line inside of a proceedure then C++11 does not do an automatic cleanup or does not release the resource back to the system. I thought that C++11 did this automatically.

Maybe it is better to make certain that I hard code the release of resources my self in case C++11 (or the compiler) misses it.

Thank you Greg Utas.
It is now easer for even me to read.
I like this site. You guys are so helpful.

Now how about someone helping me with making the code better?

OK?

That worked great.

Now when I move part of my window off of the monitor screen then this whole text disappears. I tried fixing that, but even though it is probably a simple fix, I have not gotten it to work. Should I start another question for that?

Thank you Rick York.

YES !

Rick York you have done it again.

Thank you !

I put it in here

case WM_PAINT:
    {
        Processing_A_Buffer_Update = 1;

        PAINTSTRUCT	ps;

        HDC_of_MainWindow = BeginPaint(hwnd, &ps);


        Draw_From_FRONT_BUFFER_001_To_MainWindow();


    RECT rc;
    GetClientRect(hwnd, &rc);

    SetBkMode( ps.hdc, TRANSPARENT );
    SetTextColor(ps.hdc, RGB(255, 0, 0));
    DrawText(ps.hdc, L"Red Text on Transparent Background!", -1, &rc, DT_CENTER|DT_VCENTER|DT_WORDBREAK);

    SetBkMode( ps.hdc, OPAQUE );
    SetTextColor(ps.hdc, RGB(255, 0, 0));
    SetBkColor(ps.hdc, RGB(0, 255, 0));
    DrawText(ps.hdc, L"\r\nRed Text on Green Background!", -1, &rc, DT_CENTER|DT_VCENTER|DT_WORDBREAK);

    SetBkMode( ps.hdc, TRANSPARENT );
    SetTextColor(ps.hdc, RGB(0, 255, 0));
    DrawText(ps.hdc, L"\r\n\r\nGreen Text on Transparent Background!", -1, &rc, DT_CENTER|DT_VCENTER|DT_WORDBREAK);

    SetBkMode( ps.hdc, OPAQUE );
    SetTextColor(ps.hdc, RGB(0, 255, 0));
    SetBkColor(ps.hdc, RGB(0, 0, 255));
    DrawText(ps.hdc, L"\r\n\r\n\r\nGreen Text on Blue Background!", -1, &rc, DT_CENTER|DT_VCENTER|DT_WORDBREAK);

YES !

Thank you.

I have tried code that was VC++ (Microsoft Visual Studio C++) and it needed some header that I found and included, then it needed another header for that one particular header to work, and so on. After 4 of these, I gave up. It has happened similar to that at least 3 times and I concluded that I do not want to fight with Visual Studio anything. YOU GUYS HERE have made lots of code work that I studied and learned from that I did NOT have to get into a fight with Visual Studio headers. I see the coders here make things work with or without my having to fight with any Visual Studio, so the "No Visual Studio and .net please," request. Please do not take that as an insult, but rather a desperation to not have to fight so much with learning to program in C++.

Thank you Rick York for all of your help, here and other places which I have often read.

In answer to your question, "As I asked before, WHAT are you putting into the vector?" And some more in case you need that.

To create the vector array

    std::vector<std::string> v;

To set up a test of the creation time

    unsigned long   StartTime_StringCreation    = GetTickCount();

    unsigned long   StoppingTime_StringCreation;

    unsigned long   MilliSeconds_StringCreation;

    double          Seconds_StringCreation;

    std::string     Time_StringCreation;

to create the string. I varied this from 1 to 1,000,000.

// For a string of length 1,000,000 to test how long it takes to create the string

    for (int s1 = 0; s1 <= 9; s1++) // String length = 1,000,000

    {

        for (int kt = 0; kt <= 9; kt++) // String length = 100,000

        {

            for (int w1 = 0; w1 <= 9; w1++) // String length = 10,000

            {

                for (int np = 0; np <= 9; np++) // String length = 1,000

                {

                    StringBeingAdded = StringBeingAdded + "1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890";

                }

            }

        }

    }

To complete a test of the creation time and have the result in a variable

    StoppingTime_StringCreation = GetTickCount();

    MilliSeconds_StringCreation = StoppingTime_StringCreation - StartTime_StringCreation;

    Seconds_StringCreation      = (MilliSeconds_StringCreation) / 1000.0;

    Time_StringCreation         = std::to_string(Seconds_StringCreation);

After the string is created
To place the string into the vector. I varied this from 1 to 1,000,000.

    for ( unsigned long i = 0; i <= 100; i++ )

    {

        v.emplace_back(StringBeingAdded);

        CountOfItems = CountOfItems +1;

    }

I varied the size of the string and tested the creation times.

I varied the count of the items placed into the vector array and tested the times that it took to do that.

I am finding questions that I would like someone far more experienced than me to explain.

I have read a lot here and elsewhere and I did not find sufficient answers.

Thank you Rick York for helping me.

Please, now if I have sufficiently detailed what I am doing please advise if there is more adevice for this to be given..

Thank you.

I tried to move my "solution" to make it a reply to your previous post. But it does not show "Reply" for that one, just for Afzaal Ahmad Zeeshan.

My current answer is again say "Thank you Rick York."

68M is the number that I can set the .reserve(68272126) to before I put any items in the array.

Separately, if I do not size the array, but allow it to resize itself then I get the following times for putting items into a vector array:

// With a string = "1"                            
//  68,270,000 items in the array is about 3.671 seconds.                            
//  68,280,000 is about [Microsoft Visual C++ Runtime Library Error] seconds.

The VC++ error, I read somewhere, is due to a variable being not [something]. So, I have been approaching this in a variety of ways. And I certainly do not use nor intend to use Visual Studio C++. I do not even have it loaded, as a program, on my computer. I use CodeBlocks 17.12 and a GCC compiler that accompanied it.

But, in a different test I get

                            
// With a string of length 1,000,000                            
//     1,500 is about 4.703 seconds.                            
//     2,000 is about [Microsoft Visual C++ Runtime Library Runtime Error] seconds.

That, to me, looks like conflicting test results. So, I asked the question on this page "In C++11 is there a limit to a vector array size?" I do not know if that was the correct question to ask, but among the searches for logic to this, it is a question that I did not find answered.

Thank you for helping so far Rick York.