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1>------ Build started: Project: DirectX11 test, Configuration: Debug Win32 ------
1>  Source.cpp
1>c:\users\finn\documents\visual studio 2012\projects\directx11 test\directx11 test\source.cpp(23): error C2440: 'initializing' : cannot convert from 'int' to 'RECT'
1>          No constructor could take the source type, or constructor overload resolution was ambiguous
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

#include <windows.h>

LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam);

int WINAPI wWinMain(HINSTANCE hInstance,HINSTANCE prevInstance,LPWSTR cmdLine,int cmdShow)
{
	UNREFERENCED_PARAMETER(prevInstance);
	UNREFERENCED_PARAMETER(cmdLine);

	WNDCLASSEX wndClass={0};
	wndClass.cbSize=sizeof(WNDCLASSEX);
	wndClass.style=CS_HREDRAW|CS_VREDRAW;
	wndClass.lpfnWndProc=WndProc;
	wndClass.hInstance=hInstance;
	wndClass.hCursor=LoadCursor(NULL,IDC_ARROW);
	wndClass.hbrBackground=(HBRUSH)(COLOR_WINDOW+1);
	wndClass.lpszMenuName=NULL;
	wndClass.lpszClassName;

	if( !RegisterClassEx( &wndClass))
		return -1;

	RECT rc=(0,0,640,480); //hier kommt der fehler bei der (
	AdjustWindowRect( &rc,WS_OVERLAPPEDWINDOW,FALSE);
	
	HWND hwnd=CreateWindowA("Directx11 versuche","Direct X11",WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,rc.right-rc.left,rc.bottom-rc.top,NULL,NULL,hInstance,NULL);
	if( !hwnd)
		return -1;

	ShowWindow(hwnd,cmdShow);

	MSG msg= {0};
	
	while(msg.message!=WM_QUIT)
	{
		if(PeekMessage( &msg,0,0,0,PM_REMOVE))
		{
			TranslateMessage( &msg);
			DispatchMessage( &msg);
		}
	}
	return static_cast<int>(msg.wParam);
}
LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
	PAINTSTRUCT paintStruct;
	HDC hDC;
	switch(message)
	{
		case WM_PAINT:
			hDC=BeginPaint(hwnd, &paintStruct);
			EndPaint(hwnd,  &paintStruct);
			break;
		case WM_DESTROY:
			PostQuitMessage(0);
			break;
		default:
			return DefWindowProc(hwnd,message,wParam,lParam);
	}
}

RECT rc = { 0, 0, 640, 480 };

RECT rc;
rc.left = 0;
rc.top = 0;
rc.right = 640;
rc.bottom = 480;