MFC获取屏幕大小及像素信息

        COLORREF    clr;
    HDC    dc = GetDC(0);
    maxW    = ::GetSystemMetrics( SM_CXSCREEN );
    maxH    = ::GetSystemMetrics( SM_CYSCREEN );
    for( int i = 0; i < nMaxSnow; i++ ){
        snow[i].x = snow[i].prex = rand() % maxW;
        snow[i].y = snow[i].prey = rand() % maxH;
        snow[i].preclr = snow[i].clr = ::GetPixel( dc,snow[i].x,snow[i].y );
        snow[i].stepx = (rand()%2==1)?1:-1;
        snow[i].stepy = (rand() % 5)+1;
    }
    ::ReleaseDC(0,dc);

 

 

获取键盘按钮：

if(GetAsyncKeyState(VK_CONTROL) && GetAsyncKeyState(VK_F12 ))