C / C++ / MFC

Program Files special folder location.

31-Oct-05 20:34

Try alpha blending.
See here (MSDN): http://msdn.microsoft.com/library/?url=/library/en-us/gdi/bitmaps_2b00.asp[^]

SkyWalker

Binary files

Aqueel31-Oct-05 18:22

Aqueel

31-Oct-05 18:22

Hello
I am working with binary files in c++. What i am doing is that i am reading at every 5th position in a binary file. if there is 0 then break the loop.
I wrote the following code
what is error in it. I wrote 1 at the start of the file. But it is not showing that 1
Code is

int i = 0;
int count = 0;
ifstream fin("data.bin", ios::in | ios::binary);
while (count != 5120)
{
fin.seekg(count);
cout <<i<<' ';
="" fin.read((reinterpret_cast="" <="" char="" *="">&i, sizeof(i));

if (i == 0)
break;
count+=5;
}

Please reply...
Thanks>
Aqueel A. Mirza

We Believe in Excellence

-- modified at 1:26 Tuesday 1st November, 2005

Re: Binary files

kakan31-Oct-05 19:47

kakan

31-Oct-05 19:47

Hello.
You are reading sizeof(i) no of charaters from the file. Is that what you want?
i is an integer, so sizeof(i) will evaluate to 4 (bytes).

My guess is that you really want to read one character at the time from the file and then interpret it as an integer, right?
The read it as an unsigned char, with sizeof(unsigned char)
Then, cast it to ant int.

Martin Marvinski31-Oct-05 16:37

Martin Marvinski

31-Oct-05 16:37

How do I create a folder in the Program Files directory programatically? I haven't programmed in Win32 the last few years and don't have my win code to refresh my memory. I know it is some COM object function that gets the special location like Trash, Program Files, History..

Thanks in advance.

Re: Program Files special folder location.

khan++31-Oct-05 17:53

khan++

31-Oct-05 17:53

LPITEMIDLIST pid;<br />
HRESULT hr;<br />
//replace 0x0026 by CSIDL_PROGRAM_FILES if you have a newer sdk.<br />
hr = SHGetSpecialFolderLocation(m_hWnd,0x0026,&pid);<br />
<br />
TCHAR path[MAX_PATH];<br />
SHGetPathFromIDList(pid,path);<br />
//now path contains what you want.<br />
<br />
LPMALLOC mal;<br />
SHGetMalloc(&mal);<br />
mal->Free(pid);

I hope it works, and is without errors.

this is this.

MFC FormView

ltallman31-Oct-05 16:33

ltallman

31-Oct-05 16:33

I have used the MFC application wizard in Visual C 6.0 to create a FormView application. The resultant FormView contain the word "Untitled" before the program name I supplied. What is an acceptable method of eliminating the word "Untitled"?

Re: MFC FormView

Christian Graus31-Oct-05 16:35

Christian Graus

31-Oct-05 16:35

I believe SetWindowText on the main window is what you need.

Christian Graus - Microsoft MVP - C++

Re: MFC FormView

Arman S.31-Oct-05 21:07

Arman S.

31-Oct-05 21:07

Hi,

Put the following code in CMainFrame::PreCreateWindow

cs.style &= ~FWS_ADDTOTITLE ;

--
======
Arman

Unicode, hexadecimal and japanese.

samkook31-Oct-05 14:33

samkook

31-Oct-05 14:33

I'm trying to convert some hexadecimal values into japanese text and I can't figure how to do it. I know I have to use a char set that have the japanese chars like unicode and that japanese is multibytes, but i can't seem to find enough information about how i'm supposed to do it.

It would be awesome if someone could help me whit that.

__yb31-Oct-05 21:20

__yb

31-Oct-05 21:20

U gotta use WideCharToMultiByte and MultiByteToWideChar.
If u tell me the exact format of the input I'll be able to tell u the exact process of decoding.

samkook1-Nov-05 7:31

samkook

1-Nov-05 7:31

I'm reading from a binary file each hexadecimal byte that i put into an integer, and i was converting them into a wchar, and trying to put 2 byte together, but that didn't really work. And finally i was displaying them into a textbox. And I also want to do the reverse process.

__yb1-Nov-05 11:51

__yb

1-Nov-05 11:51

Lets make a little test - u create a little file from what u got, save with the extension .txt, drop it into IE and play with the encoding - try unicode/japaneesse/...
If u can't make it show something u probably did something wrong in decoding the file.

Debugged some strange Error and Now ???

samkook1-Nov-05 15:40

samkook

1-Nov-05 15:40

I managed to display japanese chars, but it's not the good char that is displayed.

could you help me on how to start from 2 separated bit of hexadecimal and put them together correctly to display the good japanese char.

tbrake31-Oct-05 10:04

tbrake

31-Oct-05 10:04

Hi
I have written some MFC Code - But its not working on all machines !!!

<br />
//MyAppView.pp<br />
...<br />
#include "device.h"<br />
#include "receiver.h"<br />
...<br />
#include "MyAppView.h"<br />
<br />
<br />
....<br />

<br />
// device.h<br />
class CDEVICE<br />
{<br />
public:<br />
...<br />
    virtual void doA()=0;<br />
    virtual void doB()=0;<br />
    virtual void doC()=0;<br />
...<br />
}<br />

<br />
// receiver.h<br />
class CRECEIVER : public CDEVICE<br />
{<br />
public:<br />
...<br />
    virtual void doA();<br />
    virtual void doB();<br />
    virtual void doC();<br />
...<br />
}<br />

On some XP machines I retrieve an error after returning from doA()
I debuged with DRWatson

<br />
        6036719d 33c9             xor     ecx,ecx<br />
        6036719f eb03             jmp     MyApp+0x771a4 (603671a4)<br />
FEHLER ->603671a1 8b4e1c           mov     ecx,[esi+0x1c]    ds:0023:3034324c=????????<br />
        603671a4 ff742410         push    dword ptr [esp+0x10]<br />
        603671a8 50               push    eax<br />

And the Corresponding MAP file delivered

<br />
 0001:000760ea       ?ActivateTopParent@CWnd@@QAEXXZ 603670ea f   nafxcw:wincore.obj<br />
<big> 0001:00076127       ?GetTopLevelFrame@CWnd@@QBEPAVCFrameWnd@@XZ 60367127 f   nafxcw:wincore.obj</big><br />
 0001:00076168       ?GetSafeOwner@CWnd@@SGPAV1@PAV1@PAPAUHWND__@@@Z 60367168 f   nafxcw:wincore.obj<br />
 0001:00076186       ?MessageBoxA@CWnd@@QAEHPBD0I@Z 60367186 f   nafxcw:wincore.obj<br />

So there should be an error in or at
GetTopLevelFrame
can this be true ??
And/OR how to determin the exact error position ??

Any Idear might help Please !!

THX Tim Confused | :confused:

UPS Meant 'ActivateTopParent'

tbrake31-Oct-05 10:07

tbrake

31-Oct-05 10:07

I meant error at

<br />
ActivateTopParent<br />

....

Tim

Re: Debugged some strange Error and Now ???

Joe Woodbury31-Oct-05 10:49

Joe Woodbury

31-Oct-05 10:49

I'm going to totally wing it and guess that you are calling an instance of CDevice before the main window is actually done being created. The solution is to have the OnCreate message initialize communication with CDevice.

Anyone who thinks he has a better idea of what's good for people than people do is a swine.
- P.J. O'Rourke

Re: Debugged some strange Error and Now ???

tbrake31-Oct-05 11:09

tbrake

31-Oct-05 11:09

Hi
No ... Sorry ...

CDEVICE is initialised in the myAppView Constructor, but the work starts after clicking a menu buttom
for example:

<br />
void startWork()<br />
{<br />
  doA();<br />
  doB();<br />
  doC();<br />
}<br />

<br />
void startWork()<br />
{<br />
  doB();<br />
  doA();<br />
  doC();<br />
}<br />

I tried all combinations the error allways comes at returning from doA()??!??!!

Any suggestions ?

Tim

files

Manu_8131-Oct-05 8:12

Manu_81

31-Oct-05 8:12

FILE *Ofile;

	<br />
int fCnt = 0;<br />
sprintf(gz_op_fname,"TargetStatistics%d.txt",fCnt);<br />
while ((Ofile = fopen(gz_op_fname, "r")) != NULL)<br />
{<br />
       sprintf(gz_op_fname,"TargetStatistics%d.txt",++fCnt);<br />
       fclose(Ofile);<br />
}<br />

I have the above code to create a file TargetStatistics%d.txt.
ie. if TargetStatistics0.txt, TargetStatistics1.txt already exists, then TargetStatistics2.txt will be created.

But sometimes with this code I get Invalid handle exception in the while loop.
and I occurs often when there are more files, say it has to create TargetStatistics20.txt.

Whats the problem here. Thanks in advance.

Mircea Puiu31-Oct-05 8:33

31-Oct-05 8:33

Which line do you suppose is going to create the file within yor piece of code?

SkyWalker

Manu_8131-Oct-05 8:50

Manu_81

31-Oct-05 8:50

oops..sorry I didnt include the part of code that creates the file.
But the exception is surely occuring in the while loop that I had shown in my previous post, for i checked with outputdebug messages. I also included a debug message inside the while loop, and every time its happening after TargetStatistics5.txt or TargetStatistics6.txt.
Thanks.

Mircea Puiu31-Oct-05 8:54

31-Oct-05 8:54

Could you provide the loop as it is? More chances for real help Smile | :)

SkyWalker

Mircea Puiu31-Oct-05 8:56

31-Oct-05 8:56

... and also, how is gz_op_fname declared?

SkyWalker