helper.cpp

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#include "ddrawtest.h"
 
LRESULT WINAPI BasicWindowProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
        case WM_DESTROY:
        {
            PostQuitMessage (0);
            return 0;
        } break;
    }
 
    return DefWindowProc (hwnd, message, wParam, lParam);
}
 
HWND CreateBasicWindow (VOID)
{
    WNDCLASS wndclass = {0};
    wndclass.lpfnWndProc   = BasicWindowProc;
    wndclass.hInstance     = GetModuleHandle(NULL);
    wndclass.lpszClassName = "DDrawTest";
    RegisterClass(&wndclass);
 
    return CreateWindow("DDrawTest", "ReactOS DirectDraw Test", WS_POPUP, 0, 0, 10, 10, NULL, NULL, GetModuleHandle(NULL), NULL);
}
 
BOOL CreateSurface(LPDIRECTDRAWSURFACE7* pSurface)
{
    LPDIRECTDRAW7 DirectDraw;
    LPDIRECTDRAWSURFACE7 Surface;
    HWND hwnd;
 
    // Create DDraw Object
    if (DirectDrawCreateEx(NULL, (VOID**)&DirectDraw, IID_IDirectDraw7, NULL) != DD_OK)
    {
        printf("ERROR: Failed to set up ddraw\n");
        return FALSE;
    }
 
    if(!( hwnd = CreateBasicWindow() ))
    {
        printf("ERROR: Failed to create window\n");
        DirectDraw->Release();
        return FALSE;
    }
 
    if (DirectDraw->SetCooperativeLevel (hwnd, DDSCL_NORMAL) != DD_OK)
    {
        printf("ERROR: Could not set cooperative level\n");
        DirectDraw->Release();
        return 0;
    }
 
    // Creat Surface
    DDSURFACEDESC2 Desc = { 0 };
    Desc.dwHeight = 200;
    Desc.dwWidth = 200;
    Desc.dwSize = sizeof (DDSURFACEDESC2);
    Desc.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
    Desc.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH;
 
    if(DirectDraw->CreateSurface(&Desc, &Surface, NULL) != DD_OK)
    {
        printf("ERROR: Faild to create Surface\n");
        return FALSE;
    }
 
    DirectDraw->Release();
 
    *pSurface = Surface;
    return TRUE;
}