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I have a dumb question. I basically have two issues that are for the same question. I am using Microsoft Visual Studio 2005 C/C++ compiler.
The first issue is that I have a basic C application that will read in a text file, excel file, SQL 2005 database file and import them to Oracle. The code does not use any of the MFC foundation classes or even the C++ classes. It is basic C. The code does use Oracle' pro-C compiler to interact wit the Oracle database but that is not the question.
I compiled my code on Windows XP Professional using static linked libraries. I am not using any Window specific DLLs except what is available for the C compiler. I want to compile my code on Windows XP and run the application .EXE on Windows 2000, Windows 2000 Server, and Windows 2003. I found out that I could do this. I successfully ran my application built for Windows XP on Windows 2000, Windows 2000 Server and Windows 2003 without a problem.
I am basically linking with the PlatformSDK out of MS Visual 2005 Studio. I just want to verify that I will have no problem. I tested it and it appears to be no problem.
The second issue is that I also have a GUI application that uses the Windows SDK for GUIs (no C++ MFC foundations). This application creates a dialog box and adds buttons and menus that allow the user to create schedules for the oracle database via a GUI interface As I mentioned it is an older version of code that is just being maintained. It was also built on Windows XP and runs on Windows 2000 and Windows 2003.
The question:
1. Does anybody know if compiled code (statically linked) built on Windows XP will cause an issue on Windows 2000, Windows 2000 Server and Windows 2003?
2. Do I have to install VC8 Dlls? It appears that I do not since I am using the PlatformSDK and basic C.
Thanks
Dennis Russell
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Statically linked is good but not the same thing as self contained. Every API call you make will still end up in a version dependent Windows Dlls, that shouldn't attempt to update, loaded at runtime from a runtime determined location with the potential for the function to be missing on older versions of Windows. Even the statically linked C Library makes runtime calls to Windows Dlls, some before your code even gets executed when your process starts.
Provided you code defensively to allow for this where you can then you shouldn't have any other problems on the versions you mentioned. Running code accross NT and non NT based (i.e 9x/ME) versions is another kettle of pirhanas.
Nothing is exactly what it seems but everything with seems can be unpicked.
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Thanks Matthew,
I appreciate it.
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I'm getting errors like this
error C2664: 'GetModuleFileNameW' : cannot convert parameter 2 from 'char *' to 'LPWCH'
char szFilespec [_MAX_PATH]; // filespec // Get name of .exe file //sans name
::GetModuleFileName (0, szFilespec, _MAX_PATH);
and
error C2664: 'atoi' : cannot convert parameter 1 from 'ATL::CStringT<basetype,stringtraits>' to 'const char *'
time_t CLogRead::GetTimeFromStrings(char *chDate,char *chTime){
struct tm t;
CString tmpStr;
CString strMonth;
tmpStr = chDate;
tmpStr +=" ";
tmpStr += chTime;
t.tm_year = atoi(tmpStr.Mid(7,4)) - 1900;
i seem to recall this is something about Unicode. How do I change my project tio get rid of these compile errors? I'm not familiar with the IDE so if you could direct me how to,I'd appreciate it.
thanks,
sb
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Open the project properties, go to "C/C++" -> "Preprocessor" and click on the "Preprocessor Definitions" line. A button will appear on the right of this line, click on it this will display a dialog. On this dialog uncheck the "Inherit from parent or project defaults".
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Thanks Cedric,
It wanted _AFXDLL after I unchecked the inherited ones, so I entered it by hand. It seems to have gotten past that point now.
Apppreciate your help,
sb
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ns wrote: char szFilespec [_MAX_PATH];
change this line to using TCHAR instead of char
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Dear All
Hi
We write one program with Visual C++ which connects to sql server DB 2000 for data base operations.
We use windows 2000 OS in our project.
sometimes our program hangs up for a while and after it program exits.
We think that it is because of SQL server interaction.
The logs which we create shows that all critical threads hangs for a while before program exit.
First we think that it is because of one exception in our program, but we setup Dr Watson and don't catch any exception when program exits.
Do you have same experience about SQL server interaction.
Do you have any idea bout testing our proram to find the reason the this error.
If you have any idea about this bug please let me know.
Regards
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Hi All,
I was playing around with char pointers just trying to learn things and noticed that if I malloc the size of a char and set what the returned poitner points at to be 'AB', when I cout what the pointer points to it writes out 'B'.
This is the code:
char *mainBuf = NULL;
mainBuf = (char*)malloc(sizeof(char));
*mainBuf = 'AB';
cout << "mainBuf=" << mainBuf << endl;
The output is:
mainBuf=B
I really didn't know what this would do as like I said I was experimenting. In a way I was surprised it did not crash because I thought cout looked for the terminating null character.
Can anyone help me understand why this does what it does?
Thanks.
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yadrif wrote: mainBuf = (char*)malloc(sizeof(char));
*mainBuf = 'AB';
What exactly are you expecting to do with this?  You are passing 1 to malloc(), yet you are trying to stuff, albeit incorrectly, 2 bytes into mainBuf. Why?
Why are you using malloc() with a C++ program. Use new instead:
char *mainBuf = new char[3];
strcpy(mainBuf, "AB");
delete [] mainBuf;
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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DavidCrow wrote: yet you are trying to stuff, albeit incorrectly, 2 bytes into mainBuf
Nope, 'AB' is one byte (it is different than "AB"), this will be truncated to one byte. But I think the compiler should give an error there instead of a warning...
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Point taken, but it's wrong nonetheless.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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Nope, 'AB' is a short int that will truncated to one byte 
Mark Salsbery
Microsoft MVP - Visual C++
![Java | [Coffee]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/coffee.gif)
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Mark Salsbery
Microsoft MVP - Visual C++
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I was just playing around with the code, no real application here. Just learning.
I actually started by writing a sample to use a pointer to a pointer. Just to learn how it worked and actually use what I read. I then for some reason decided to stuff 'AB' into what the pointer points to just to see what would happen. I then removed the pointer to pointer part to simplify it before posting the question.
Maybe this just gets into the realm of undefined behavior. I thought perhaps there would be an explanation as to why it does what it does.
Thanks.
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I'm sorry no one here has taken the effort to give you a good reply. I also would like to know the answer.
I've never used syntax like 'AB' since I've always dealt with ASCII strings, and the single 'apostophe' returns the character (integer) value of a single character between the marks. I don't know what it does in your context, but appears that perhaps it's playing "little endian" and returning the least-significant byte of a 16-bit value???
Did you try declaring the pointer as a wchar_t* instead? This might work.
Maybe some real coders will see your question in a while and respond with a real answer.
David
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DQNOK wrote: but appears that perhaps it's playing "little endian" and returning the least-significant byte of a 16-bit value???
This is correct.
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I wrote a C++ code for analyzing texts few years ago and it works perfectly. I am now trying to make it a windows-based application by integrating it into Visual C++ using visual studio. This has been an ache!
I first got
fatal error C1010: Unexpected end of file while looking for precompiled header directive.
It was not too difficult to correct this as there are many similar experiences recorded in various discussion groups on the Internet.
However, when I added #include "stdafx.h" as directed in various responses to the c1010 error on the Internet, I got the following errors
error C2095: syntax error: 'function-style cast'
error C2226: syntax error: unexpected type 'T'
error C2095: syntax error: ')'
and a number of other similar errors.
All these were generated by a code line 1 below:
1 template <class t=""> T max(T x, T,y)
2 {
3 return (x > y) ? x : y;
4 }
any ideas on what could be wrong?
taintransit
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Please, when posting code (and even more when posting template code), replace all the < and > symbols with the formatting tags just aboce the emoticons (otherwise, they won't be visisble).
To your question: didn't you forget a class keyword ? template <class T> T max(T min, T max)
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Cedric Moonen wrote: ...replace all the < and > symbols with the formatting tags...
Hi Cedric. You actually only need to replace the < symbol.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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Oh well, then that makes things even more easier
Thanks for the tip.
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Unless > and < were eaten in your post, it looks like the syntax for the template is incorrect. It should be something closer to:
template< typename T >
T max( T x, T y ) Peace!
-=- James Please rate this message - let me know if I helped or not!<HR>If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
See DeleteFXPFiles
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Yes you are right. The angle brackets were eaten up in the post. Cedric Momen pointed this out in his response.
jhwurmbach suggested that I avoid pre compiling the headers. It worked! Thanks every body.
taintransit
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taintransit wrote: 1 template T max(T x, T,y)
Look at this line closely.
taintransit wrote: any ideas on what could be wrong?
For a hint, try renaming the macro.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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