Fenster im Vollbildmodus starten

[INTEGER]

HI,
Ich will mein Fenster in Vollbild haben. Das klappt auch am Anfang, wechselt
aber wieder in den Fenstermodus und ich find den Fehler nicht.

#define WIN32_LEAN_AND_MEAN
#define WINDOW_CLASS_NAME L"Test05"

#define KEYDOWN(vk_code) ((GetAsyncKeyState(vk_code)&0x8000?1:0))
#define KEYUP(vk_code) ((GetAsyncKeyState(vk_code)&0x8000?0:1))
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <shellapi.h>
LOGFONT lf;

HWND	main_window_handle = NULL;
HWND	hWndEingabe			=NULL;
HINSTANCE	hinstance_app = NULL;
LRESULT CALLBACK WindowProc(HWND hwnd,
							UINT msg,
							WPARAM wparam,
							LPARAM lparam);

void WriteString(HWND hwnd,TCHAR*str,int x, int y,COLORREF Bk,COLORREF cText);

void SetDisplayMode(long lWidth, long lHeight, long lBPP)
{
		DEVMODE dmScreenSettings;								
		memset(&dmScreenSettings,0,sizeof(dmScreenSettings));	
		dmScreenSettings.dmSize=sizeof(dmScreenSettings);		
		dmScreenSettings.dmPelsWidth	= lWidth;				
		dmScreenSettings.dmPelsHeight	= lHeight;				
		dmScreenSettings.dmBitsPerPel	= lBPP;					
		dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT|DM_DISPLAYFLAGS;

	if (ChangeDisplaySettings(&dmScreenSettings,CDS_FULLSCREEN | CDS_RESET)!=DISP_CHANGE_SUCCESSFUL)
	{
		MessageBox(NULL,L"The requested mode is not supported!",L"Error",MB_OK);

	}

}

int WINAPI WinMain (HINSTANCE hinstance, HINSTANCE hprevinstance,
					LPSTR lpcmdline, int cmndshow)
{
	srand( (unsigned)time( NULL ) );
	WNDCLASS winclass;
	HWND	hwnd;
	MSG msg;

	winclass.style	= CS_HREDRAW | CS_VREDRAW;
	winclass.cbClsExtra	= 0;
	winclass.cbWndExtra	= 0;
	winclass.lpfnWndProc	= WindowProc;
	winclass.hInstance	= hinstance;
	winclass.hIcon	= LoadIcon(NULL, IDI_APPLICATION);
	winclass.hCursor	= SetCursor(LoadCursor(NULL, IDC_WAIT));
	winclass.hbrBackground	=(HBRUSH)GetStockObject(BLACK_BRUSH);
	winclass.lpszMenuName	= NULL;
	winclass.lpszClassName	= WINDOW_CLASS_NAME;
	RegisterClass(&winclass);
	hinstance_app = hinstance;

	hwnd = CreateWindowEx(NULL,WINDOW_CLASS_NAME, L"Window",
						 WS_VISIBLE |WS_POPUPWINDOW, 100,100,600,600,
						NULL, NULL, hinstance, NULL);

	main_window_handle=hwnd;
	SetDisplayMode(1024,768,32);

	while (true)
	{
	if(PeekMessage(&msg,NULL,0,0,PM_REMOVE))
		{
			if(msg.message == WM_QUIT)
				break;
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
	}
	return (msg.wParam);
}

LRESULT CALLBACK WindowProc(HWND hwnd,
							UINT msg,
							WPARAM wparam,
							LPARAM lparam)
{
	PAINTSTRUCT ps;		
	HDC			hdc;

	switch (msg)
	{
	case WM_CREATE:
		{
			return(0);
		}
		break;

	case WM_CHAR:
		{	
			return(0);
		}
		break;
	case WM_PAINT:
		{

			hdc = BeginPaint(hwnd,&ps);
			EndPaint(hwnd,&ps); 
			return(0);
		}
		break;
	case WM_DESTROY:
		{
			PostQuitMessage(0);
			return(0);
		}
		break;
	case WM_LBUTTONDOWN:
		{	
			return 0;
		}
	case WM_RBUTTONDOWN:
		{	
			SetDisplayMode(1024,768,32);

			return 0;
		}
	default:
		break;
	}
	return(DefWindowProc(hwnd,msg,wparam,lparam));
}

void WriteString(HWND hwnd,TCHAR*str,int x, int y,COLORREF Bk,COLORREF cText)
{

	HFONT fnt;

	HDC dc;
	RECT r;
	dc = GetDC(hwnd);
	GetClientRect(hwnd,&r);
	r.top=y;
	r.left=x;
	SetRect(&r,x,y,x+61,y+15);
	SetBkColor(dc,Bk);
	SetTextColor(dc,cText);
	lf.lfHeight=15;
	swprintf(lf.lfFaceName,L"Arial Unicode MS");
	FillRect(dc,&r,(HBRUSH)GetStockObject(WHITE_BRUSH));
	fnt = CreateFontIndirect(&lf);
	SelectObject(dc, fnt);
	DrawText(dc,str,-1,&r,0);

	ReleaseDC(hwnd, dc);
	DeleteObject(fnt);
}

[INTEGER]

habs inzwischen selbst geschafft:

#define WIN32_LEAN_AND_MEAN
#define WINDOW_CLASS_NAME L"Test05"

#define KEYDOWN(vk_code) ((GetAsyncKeyState(vk_code)&0x8000?1:0))
#define KEYUP(vk_code) ((GetAsyncKeyState(vk_code)&0x8000?0:1))
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <shellapi.h>
LOGFONT lf;

HWND	main_window_handle = NULL;
HWND	hWndEingabe			=NULL;
HINSTANCE	hinstance_app = NULL;
LRESULT CALLBACK WindowProc(HWND hwnd,
							UINT msg,
							WPARAM wparam,
							LPARAM lparam);

void WriteString(HWND hwnd,TCHAR*str,int x, int y,COLORREF Bk,COLORREF cText);

void SetDisplayMode(long lWidth, long lHeight, long lBPP)
{

	RECT windowRect;

	windowRect.top = 0;
	windowRect.left = 0;
	windowRect.bottom = 768;
	windowRect.right = 1024;

		DEVMODE dmScreenSettings;								
		memset(&dmScreenSettings,0,sizeof(dmScreenSettings));	
		dmScreenSettings.dmSize=sizeof(dmScreenSettings);		
		dmScreenSettings.dmPelsWidth	= lWidth;				
		dmScreenSettings.dmPelsHeight	= lHeight;				
		dmScreenSettings.dmBitsPerPel	= lBPP;					
		dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT;

	if (ChangeDisplaySettings(&dmScreenSettings,CDS_FULLSCREEN | CDS_RESET)!=DISP_CHANGE_SUCCESSFUL)
	{
		MessageBox(NULL,L"The requested mode is not supported!",L"Error",MB_OK);

	}

	AdjustWindowRectEx(&windowRect, WS_POPUP, FALSE, WS_EX_APPWINDOW);
}

int WINAPI WinMain(HINSTANCE hInstance,	HINSTANCE hPrevInstance,
		   LPSTR lpCmdLine, int	nShowCmd)
{
	WNDCLASSEX	wc;	
	HWND hwnd;
	MSG		msg;
	DWORD dwExStyle, dwStyle;
	int width=1024,height=768,bits=32;
	bool	done=FALSE;
	RECT windowRect;

	windowRect.top = 0;
	windowRect.left = 0;
	windowRect.bottom = height;
	windowRect.right = width;

	wc.cbSize		= sizeof(WNDCLASSEX);	
	wc.style		= CS_HREDRAW | CS_VREDRAW;
	wc.lpfnWndProc		= WindowProc;
	wc.cbClsExtra		= 0;
	wc.cbWndExtra		= 0;
	wc.hInstance		= hInstance;	
	wc.hIcon		= LoadIcon(NULL, IDI_APPLICATION);
	wc.hCursor		= LoadCursor(NULL, IDC_ARROW);
	wc.hbrBackground	= (HBRUSH)GetStockObject(WHITE_BRUSH);	
	wc.lpszMenuName		= NULL;
	wc.lpszClassName	= L"OpenGL";
	wc.hIconSm		= LoadIcon(NULL,IDI_WINLOGO);

	RegisterClassEx(&wc);

	DEVMODE devModeScreen;
	memset(&devModeScreen, 0,sizeof(devModeScreen));
	devModeScreen.dmSize = sizeof(devModeScreen);
	devModeScreen.dmPelsWidth = width;
	devModeScreen.dmPelsHeight = height;
	devModeScreen.dmBitsPerPel = bits;
	devModeScreen.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_BITSPERPEL;

	ChangeDisplaySettings(&devModeScreen, CDS_FULLSCREEN);

	dwExStyle = WS_EX_APPWINDOW;
	dwStyle = WS_POPUP;
	ShowCursor(FALSE);

	AdjustWindowRectEx(&windowRect, dwStyle, FALSE, dwExStyle);

	hwnd=CreateWindowEx(dwExStyle,
			    L"OpenGL",	
			    L"glwindow",
			    dwStyle | WS_CLIPCHILDREN | WS_CLIPSIBLINGS, 
			    0,0,
			    windowRect.right - windowRect.left,
			    windowRect.bottom - windowRect.top,
			    NULL,
			    NULL,
			    hInstance,	
			    NULL);

	ShowWindow(hwnd, SW_SHOW);
	UpdateWindow(hwnd);

	while(!done)
	{
		PeekMessage(&msg,NULL,0,0,PM_REMOVE);	

			if (msg.message==WM_QUIT)
			{
				done=TRUE;
			}
			else
			{
				TranslateMessage(&msg);	
				DispatchMessage(&msg);
			}
	}
	return (msg.wParam);
}

LRESULT CALLBACK WindowProc(HWND hwnd,
							UINT msg,
							WPARAM wparam,
							LPARAM lparam)
{
	PAINTSTRUCT ps;		
	HDC			hdc;

	switch (msg)
	{
	case WM_CREATE:
		{
			return(0);
		}
		break;

	case WM_CHAR:
		{	
			return(0);
		}
		break;
	case WM_PAINT:
		{

			hdc = BeginPaint(hwnd,&ps);
			EndPaint(hwnd,&ps); 
			return(0);
		}
		break;
	case WM_DESTROY:
		{
			PostQuitMessage(0);
			return(0);
		}
		break;
	case WM_LBUTTONDOWN:
		{	
			return 0;
		}
	case WM_RBUTTONDOWN:
		{	
			return 0;
		}
	default:
		break;
	}
	return(DefWindowProc(hwnd,msg,wparam,lparam));
}

void WriteString(HWND hwnd,TCHAR*str,int x, int y,COLORREF Bk,COLORREF cText)
{

	HFONT fnt;

	HDC dc;
	RECT r;
	dc = GetDC(hwnd);
	GetClientRect(hwnd,&r);
	r.top=y;
	r.left=x;
	SetRect(&r,x,y,x+61,y+15);
	SetBkColor(dc,Bk);
	SetTextColor(dc,cText);
	lf.lfHeight=15;
	swprintf(lf.lfFaceName,L"Arial Unicode MS");
	FillRect(dc,&r,(HBRUSH)GetStockObject(WHITE_BRUSH));
	fnt = CreateFontIndirect(&lf);
	SelectObject(dc, fnt);
	DrawText(dc,str,-1,&r,0);

	ReleaseDC(hwnd, dc);
	DeleteObject(fnt);
}