windows程序設計日記

    SetTextColor(hdc, RGB(rand()%256,rand()%256,rand()%256));                                    //設置文字顏色

    // set the background color to black
    SetBkColor(hdc, RGB(0,0,0));                                 

    // finally set the transparency mode to transparent
    SetBkMode(hdc, TRANSPARENT);   TRANSPARENT表示透明 OPAQUE表示不透明

    // draw some text at a random location
    TextOut(hdc,rand()%400,rand()%400, "GDI Text Demo!", strlen("GDI Text Demo!"));

    Sleep(10);

 WS_OVERLAPPEDWINDOW (WS_POPUP(無邊框))| WS_VISIBLE 

GetSystemMetrics(SM_CXSCREEN),GetSystemMetrics(SM_CYSCREEN),

二，獲取HINSTANCE的方法

1，SDK API中使用HMODULE GetModuleHandle(NULL);

2，MFC中使用HINSTANCE AfxGetInstanceHandle();