by Karthikeyan (187 Submissions)
Category: Windows API Call/Explanation
Compatability: Visual Basic 5.0
Difficulty: Unknown Difficulty
Originally Published: Sat 17th February 2001
Date Added: Mon 8th February 2021
Rating: 
(1 Votes)
Capture desktop using GetDesktopWindow and BitBlt API
API Declarations
Private Const BLACKNESS = &H42
Private Const SRCERASE = &H440328
Private Const SRCINVERT = &H660046
Private Const SRCPAINT = &HEE0086
Private Const WHITENESS = &HFF0062
Private Const DSTINVERT = &H550009
Private Const MERGECOPY = &HC000CA
Private Const MERGEPAINT = &HBB0226
Private Const NOTSRCCOPY = &H330008
Private Const NOTSRCERASE = &H1100A6
Private Const PATCOPY = &HF00021
Private Const PATINVERT = &H5A0049
Private Const PATPAINT = &HFB0A09
Private Const SRCAND = &H8800C6
Private Declare Function GetDesktopWindow Lib "user32" () As Long
Private Declare Function GetDC Lib "user32" (ByVal hwnd 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
VBcoders
Dim dwnd As Long, wndc As Long
Form1.AutoRedraw = True
dwnd = GetDesktopWindow()
wndc = GetDC(dwnd)
BitBlt Me.hDC, 0, 0, Screen.Width, Screen.Height, wndc, 0, 0, SRCCOPY
End Sub
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