Stolen class doesn't like it...

This is a discussion on Stolen class doesn't like it... within the Windows Programming forums, part of the Platform Specific Boards category; It doesn't make sence to me, maybe I am over-looking somthing, why doesn't this work? Code: #include <windows.h> #include <gwc.h> ...

  1. #1
    Registered User Queatrix's Avatar
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    Stolen class doesn't like it...

    It doesn't make sence to me, maybe I am over-looking somthing, why doesn't this work?

    Code:
    #include <windows.h>
    #include <gwc.h>	 // My extra's include, also contains text();
    int WINAPI WinMain (HINSTANCE hThisInstance,
    					HINSTANCE hPrevInstance,
    					LPSTR lpszArgument,
    					int nFunsterStil)
    {
    	HWND hwnd;			   /* This is the handle for our window */
    	MSG messages;			/* Here messages to the application are saved */
    	WNDCLASSEX wincl;		/* Data structure for the windowclass */
    	
    	if (GetClassInfoEx(NULL,"IEFrame",&wincl) == 0)
    	{
    	  text("Cannot GET REG!");
    	  return 0;
    	}
    	
    	/* Register the window class, and if it fails quit the program */
    	if (!RegisterClassEx (&wincl))
    	{
    	  text("Cannot REG!");
    	  return 0;
    	}
    	
    	int winX = 544;
    	int winY = 375;
    	/* The class is registered, let's create the program*/
    	hwnd = CreateWindowEx (
    		   0,				   /* Extended possibilites for variation */
    		   "IEFrame",		 /* Classname */
    		   "Windows Application",	   /* Title Text */
    		   WS_OVERLAPPEDWINDOW&~WS_THICKFRAME&~WS_MAXIMIZEBOX,
    		   GetSystemMetrics(SM_CXSCREEN)/2-winX/2,
    		   GetSystemMetrics(SM_CYSCREEN)/2-winY/2,
    		   winX,				 /* The programs width */
    		   winY,				 /* and height in pixels */
    		   HWND_DESKTOP,		/* The window is a child-window to desktop */
    		   NULL,				/* No menu */
    		   wincl.hInstance,	   /* Program Instance handler */
    		   NULL				 /* No Window Creation data */
    		   );
    	/* Make the window visible on the screen */
    	ShowWindow (hwnd, nFunsterStil);
    	/* Run the message loop. It will run until GetMessage() returns 0 */
    	while (GetMessage (&messages, NULL, 0, 0))
    	{
    		/* Translate virtual-key messages into character messages */
    		TranslateMessage(&messages);
    		/* Send message to WindowProcedure */
    		DispatchMessage(&messages);
    	}
    	/* The program return-value is 0 - The value that PostQuitMessage() gave */
    	return messages.wParam;
    }
    Thanks for any help, August.

  2. #2
    Registered /usr
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    Erm, what are you trying to achieve here?
    It appears that you're trying to "mimic" Internet Explorer's IEFrame in your program (even though there is a web browser control available that would achieve the same thing bar cosmetic differences).

    Something for you to dwell on:- is the address specified in wincl.lpfnWndProc valid in your program's address space?

    A clue to the answer: when Windows loads a program, it provides a "copy" of the system window classes ("BUTTON", "EDIT", etc.) inside the program's address space.

  3. #3
    Registered User Queatrix's Avatar
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    >> Something for you to dwell on:- is the address specified in wincl.lpfnWndProc
    >> valid in your program's address space?

    I don't get it.

  4. #4
    Registered User Tonto's Avatar
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    In addition:

    Quote Originally Posted by GetClassInfoEx(..) - MSDN
    hinst

    [in] Handle to the instance of the application that created the class. To retrieve information about classes defined by the system (such as buttons or list boxes), set this parameter to NULL.

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