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
Public Const SRCCOPY = &HCC0020 ' (DWORD) dest = source
Public Const SRCINVERT = &H660046 ' (DWORD) dest = source XOR dest
Public Const SRCPAINT = &HEE0086 ' (DWORD) dest = source OR dest
Public Const SRCAND = &H8800C6 ' (DWORD) dest = source AND dest