arg

I hate how tempremental this **** can be... I just wrote this, I thoght it would work no problem... but for some dumbass reason it says "FAILED TO CREATE WINDOW", in otherwords hwnd == NULL.

Code:

#include <windows.h>

bool jah = true;

HWND hwnd;

LRESULT CALLBACK wndProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam)
{

	switch(Message)
	{
	case WM_CLOSE: DestroyWindow(hwnd); jah = false; return 0;
	default:return 0;
	}
	return DefWindowProc(hwnd, Message, wParam, lParam);
}

int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow)
{
	MSG * msg = new MSG;
	WNDCLASSEX wnd;
	ZeroMemory((void*)&wnd,sizeof(WNDCLASSEX));
	wnd.cbSize = sizeof(WNDCLASSEX);
	wnd.hbrBackground = (HBRUSH)(COLOR_WINDOW);
	wnd.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
	wnd.hCursor       = LoadCursor(NULL, IDC_ARROW);
	wnd.hIconSm		  = wnd.hIcon;
	wnd.hInstance	  = hInstance;
	wnd.lpfnWndProc   = wndProc;
	wnd.lpszClassName = "listcontroltest";
	if(!RegisterClassEx(&wnd))
	{
		MessageBox(NULL,"FAILED TO REGISTER CLASS","ERROR",MB_ICONERROR);
		return 0;
	}

	hwnd = CreateWindowEx(WS_SYSMENU,"listcontroltest","Hello",WS_SYSMENU,0,0,100,100,NULL,(HMENU)NULL,hInstance,NULL);
	if(!hwnd)
	{
		MessageBox(NULL,"FAILED TO CREATE WINDOW","ERROR",MB_ICONERROR);
		return 0;
	}

	ShowWindow(hwnd,nCmdShow);
	UpdateWindow(hwnd);

	while(jah)
	{
		PeekMessage(msg,NULL,0,0,PM_REMOVE);
		TranslateMessage(msg);
		DispatchMessage(msg);
	}
	return 1;
}

SPH

hi,
I think that the problem is in the below function's first parameter.
It should not be WS_SYSMENU ( I can be wrong!!) please refer MSDN for the function defination. Put 0 or NULL on the First Param.

CreateWindowEx(WS_SYSMENU,"listcontroltest","Hello " ,WS_SYSMENU,0,0,100,100,NULL,(HMENU)NULL,hInstance
,NULL);


jatan

Your wndproc is preventing your window from being created. You'll have to remove the default case. Also unless you change the style in the CreateWindowEx() call you probably wont get what you expect.