windows多线程编程_python的优点_windows多线程编程实例(7)

int cxClient, cyClient ;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,

PSTR szCmdLine, int iCmdShow)

{

static TCHAR szAppName[] = TEXT ("RndRctMT") ;

MSG msg ;

WNDCLASS wndclass ;

wndclass.style = CS_HREDRAW | CS_VREDRAW ;

wndclass.lpfnWndProc = WndProc ;

wndclass.cbClsExtra = 0 ;

wndclass.cbWndExtra = 0 ;

wndclass.hInstance = hInstance ;

wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;

wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;

wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;

wndclass.lpszMenuName = NULL ;

wndclass.lpszClassName = szAppName ;

if (!RegisterClass (&wndclass))

{

MessageBox (NULL, TEXT ("This program requires Windows NT!"),szAppName, MB_ICONERROR) ;

return 0 ;

}

hwnd = CreateWindow ( szAppName, TEXT ("Random Rectangles"),

WS_OVERLAPPEDWINDOW,

CW_USEDEFAULT, CW_USEDEFAULT,

CW_USEDEFAULT, CW_USEDEFAULT,

NULL, NULL, hInstance, NULL) ;

ShowWindow (hwnd, iCmdShow) ;

UpdateWindow (hwnd) ;

while (GetMessage (&msg, NULL, 0, 0))

{

TranslateMessage (&msg) ;

DispatchMessage (&msg) ;

}

return msg.wParam ;

}

VOID Thread (PVOID pvoid)

{

HBRUSH hBrush ;

HDC hdc ;

int xLeft, xRight, yTop, yBottom, iRed, iGreen, iBlue ;

while (TRUE)

{

if (cxClient != 0 || cyClient != 0)

{

xLeft = rand () % cxClient ;

xRight = rand () % cxClient ;

yTop = rand () % cyClient ;

yBottom = rand () % cyClient ;

iRed = rand () & 255 ;

iGreen = rand () & 255 ;

iBlue = rand () & 255 ;

hdc = GetDC (hwnd) ;

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