hi to everybody im having a problem with the compilation(directx)....everything goes ok but the windows shows up for less than a secondon and i cant see anything...... im new with the directx programming can somebody help me thanks

when i try to compile i have this error:

"Run-Time Check Failure #3 - The variable 'msg' is being used without being initialized."

this is the code when i get the error

" return (int)msg.wParam; "

and if i do " return 0 instead of return (int)msg.wParam" the windows appears for less than a second.

Do you even have a message loop?

this is the win32 without directx;


#include <windows.h>
/* Message handler prototype */
LRESULT CALLBACK WndProc (HWND hWindow, UINT iMessage,WPARAM wParam, LPARAM lParam);


int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInst,LPSTR lpCmdLine, int nShowCmd)
{
/* “The Window Class” */
TCHAR wintext[]= TEXT("my first");
TCHAR wintitle[]=TEXT("my windows");

WNDCLASS kWndClass;

MSG kMessage;

kWndClass.hCursor = LoadCursor (NULL, IDC_ARROW);
kWndClass.hIcon = LoadIcon (NULL, IDI_APPLICATION);
kWndClass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH);

kWndClass.hInstance = hInstance;
kWndClass.lpfnWndProc = WndProc;
kWndClass.lpszClassName = TEXT("01 Basic Window");

kWndClass.lpszMenuName = NULL;

kWndClass.cbClsExtra = NULL;
kWndClass.cbWndExtra = NULL;
kWndClass.style = NULL;

if (!RegisterClass (&kWndClass))
{
return -1;
}

HWND hWindow;
hWindow = CreateWindow (wintext,
wintitle,
WS_OVERLAPPEDWINDOW | WS_VISIBLE,
0,
0,
320,
320,
NULL, NULL, hInstance, NULL);

ShowWindow(hWindow,nShowCmd);
UpdateWindow(hWindow);

return kMessage.wParam;


while (GetMessage (&kMessage, hWindow, 0, 0))
{
TranslateMessage (&kMessage);
DispatchMessage (&kMessage);
}

return 0;
}


LRESULT CALLBACK WndProc (HWND hWindow, UINT iMessage,WPARAM wParam, LPARAM lParam)
{
switch (iMessage)
{

case WM_CLOSE:
PostQuitMessage (0);
break;

default:
return DefWindowProc (hWindow, iMessage, wParam, lParam);
}
return 0;
}

Quote:Original post by vegolord
return kMessage.wParam;

This line seems to be the problem. The return statement will make your programm leave the main() function and it will end. Therefore you aren't even entering the messageloop and your window will show up only for a very short period. Try deleting this line and see if it works now.

i removed it but the debug is still running and nothing happens

the line is:

return kMessage.wParam;

Try to change this Code:

Quote:Original post by vegolord
HWND hWindow;
hWindow = CreateWindow (wintext,
wintitle,
WS_OVERLAPPEDWINDOW | WS_VISIBLE,
0,
0,
320,
320,
NULL, NULL, hInstance, NULL);

ShowWindow(hWindow,nShowCmd);
UpdateWindow(hWindow);

return kMessage.wParam;

To this:



You have to pass the name of your window class to CreateWindow(), you've been passing an totally unrelated string to it.