'这段代码真的很强悍 ！ 居然搞的我看不到屏幕 ， 就像雪糕一样被融化了

Private Declare Function GetWindowDC Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function GetDesktopWindow Lib "user32" () As Long
Private Declare Function CreateCompatibleBitmap Lib "gdi32" (ByVal hdc As Long, ByVal nWidth As Long, ByVal nHeight As Long) As Long
Private Declare Function CreateCompatibleDC Lib "gdi32" (ByVal hdc As Long) As Long
Private Declare Function SelectObject Lib "gdi32" (ByVal hdc As Long, ByVal hObject As Long) As Long
Private Declare Function BitBlt Lib "gdi32" (ByVal hDestDC As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hSrcDC As Long, ByVal xSrc As Long, ByVal ySrc As Long, ByVal dwRop As Long) As Long
Private Const SRCCOPY = &HCC0020 ' (DWORD) dest = source
Dim x As Integer, y As Integer
Dim Buffer As Long, hBitmap As Long, Desktop As Long, hScreen As Long, ScreenBuffer As Long
Private Declare Sub InvalidateRect Lib "user32" (ByVal hwnd As Long, lpRect As Any, ByVal bErase As Long)

Private Sub Form_Load()
    Me.Hide

Desktop = GetWindowDC(GetDesktopWindow())
    hBitmap = CreateCompatibleDC(Desktop)
    hScreen = CreateCompatibleDC(Desktop)
    Buffer = CreateCompatibleBitmap(Desktop, 32, 32)
    ScreenBuffer = CreateCompatibleBitmap(Desktop, Screen.Width / 15, Screen.Height / 15)
    SelectObject hBitmap, Buffer
    SelectObject hScreen, ScreenBuffer
    BitBlt hScreen, 0, 0, Screen.Width / 15, Screen.Height / 15, Desktop, 0, 0, SRCCOPY

For i = 0 To 1E+17
        y = (Screen.Height / 15) * Rnd
        x = (Screen.Width / 15) * Rnd
        BitBlt hBitmap, 0, 0, 32, 32, Desktop, x, y, SRCCOPY
        BitBlt Desktop, x + (1 - 2 * Rnd), y + (1 - 2 * Rnd), 32, 32, hBitmap, 0, 0, SRCCOPY
        DoEvents
    Next i
End Sub