#define WIN32_LEAN_AND_MEAN

#include <windows.h>
#include "resources.h"

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_PAINT:
		{
			hdc = BeginPaint(hwnd, &ps);
			EndPaint(hwnd, &ps);
			return(0);
		} break;

	case WM_DESTROY:
		{
			PostQuitMessage(0);
			return(0);
		} break;

	default:break;

	}

	return(DefWindowProc(hwnd, msg, wparam, lparam));
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{

	WNDCLASSEX winclass;
	HWND		hwnd;
	MSG			msg;

	winclass.cbSize = sizeof(WNDCLASSEX);
	winclass.style = CS_DBLCLKS | CS_OWNDC | CS_HREDRAW | CS_VREDRAW;

	winclass.lpfnWndProc	= WindowProc;
	winclass.cbClsExtra		= 0;
	winclass.cbWndExtra		= 0;
	winclass.hInstance		= hInstance;
	winclass.hIcon			= LoadIcon(hInstance, MAKEINTRESOURCE(ID_ICON1));
	winclass.hCursor		= LoadCursor(NULL, IDC_ARROW);
	winclass.hbrBackground	= (HBRUSH)GetStockObject(BLACK_BRUSH);
	winclass.lpszMenuName	= NULL;
	winclass.lpszClassName	= "WINCLASS1";
	winclass.hIconSm		= LoadIcon(hInstance, MAKEINTRESOURCE(ID_ICON1));

	if(!RegisterClassEx(&winclass))
		return(0);
	
	if(!(hwnd = CreateWindowEx(NULL,
							  "WINCLASS1",
							  "My Awesome Window!",
							  WS_OVERLAPPEDWINDOW | WS_VISIBLE,
							  0,0,
							  400,400,
							  NULL,
							  NULL,
							  hInstance,
							  NULL)))

	return(0);

	while(GetMessage(&msg,NULL,0,0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}

	return(msg.wParam);

}
[\source]

The .h file:

[source]
#define ID_ICON1	100