#define WIN32_LEAN_AND_MEAN
#define WINDOWNAME            "Window"
#define Height				  640
#define Width				  480

#include 
#include 
#include 
#include 
#include 
#include 

#include 

int GameInit();
int GameMain();
int GameEnd();

HWND			windowh   = NULL;
HINSTANCE		hinstance = NULL;

LPDIRECTDRAW4			lpdd	=NULL;
LPDIRECTDRAWSURFACE4	pbuff	=NULL;
LPDIRECTDRAWSURFACE4	bbuff   =NULL;
DDSCAPS					ddcap;
DDSURFACEDESC			ddsd;
DDBLTFX					bltfx;

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,
				   HINSTNACE hprevinstance,
				   LPSTR lpcmdline, 
				   int nShowCmd)
{
	HDC			hdc;
	HWND		hwnd;
	PAINTSTRUCT ps;
	MSG			msg;
	WNDCLASSEX  wc;

	wc.cbClsExtra				=0;
	wc.cbWndExtra				=0;
	wc.cbSize					=sizeof(WNDCLASSEX);
	wc.hbrBackground			=(HBRUSH)GetStockObject(BLACK_BRUSH);
	wc.hCursor					=LoadCursor(NULL, IDC_ARROW);
	wc.hIcon					=LoadIcon(NULL, IDI_APPLICATION);
	wc.hIconSm					=LoadIcon(NULL, IDI_APPLICATION);
	wc.hInstance				=hinstance;
	wc.lpfnWndProc				=WindowProc;
	wc.lpszClassName			=WINDOWNAME;
	wc.lpszMenuName				=NULL;
	wc.style					=CS_DBLCLKS/CS_OWNDC/
								 CS_HREDRAW/CS_VREDRAW;

	if(!RegisterClassEx(&wc))
	{
		return(0);
	}

	if(!(hwnd = CreateWindowEx(NULL, WINDOWNAME, 
							   "BLT", WS_OVERLAPPEDWINDOW
							   /WS_VISIBLE, 0, 0, Width, Height, 
							   NULL, NULL, hinstance, NULL)))
	{
		return(0);
	}
	
	windowh = hwnd;
	instance = hinstance;
	
	GameInit();

	while(1)
	{
		if(msg.message == WM_QUIT);
		break;
		
		GameMain()
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return(msg.wParam);
	GameEnd();
}

int GameInit()
{
	if(FAILED(DirectDrawCreate(NULL, &lpdd, NULL)))
	{
		return(0);
	}
	
	if(lpdd->SetCooperativeLevel(windowh, DDSCL_ALLOWREBOOT/
								 DDSCL_EXCLUSIVE/
								 DDSCL_FULLSCREEN)!=DD_OK)
	{
		return(0);
	}

	if(lpdd->SetDisplayMode(640, 480, 16)!=DD_OK)
	{
		return(0);
	}
	
	memset(ddsd, 0, sizeof(ddsd));
	ddsd.dwSize  = sizeof(ddsd);
	ddsd.dwFlags = DDSD_CAPS / DDSD_FLIP;
	ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE/

	if(FAILED(lpdd->CreateSurface(&ddsd, &pbuf, NULL)))
	{
		return(0);
	}
}

• In WindowProc the default is outside the switch.
  
• In WindowProc all your breaks are unreachable since you return out before you get to them.
  
• In WinMain it should be HINSTANCE
  
• After you create the window instance is not defined anywhere.
  
• ; after GameMain()
  
• When you memset in GameInit() you need &ddsd as the first param.
  
• ; after ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE
  
• When you try to create the surface I think you mean &puff
  

quote: Original post by PigHeaded
I see two problems.
1. You have 7 undefined #include(s)