by Steve (12 Submissions)
Category: Custom Controls/Forms/Menus
Compatability: Visual Basic 3.0
Difficulty: Unknown Difficulty
Date Added: Wed 3rd February 2021
Rating: 
(6 Votes)
This code simply takes a picture of your desktop or a screenshot. I guess if you wanted to you could use this to view the desktop of a computer over a network, although that would be a bit slow. I hope this code is of some interest to some people Hope this helps.
Assumes
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Set the Form properties to the following:
AutoRedraw True
BorderStyle 0 - None
WindowState 2 - Maximized
API Declarations'Check out my site at http://www.vbtutor.com
'Thanks
Declare Function BitBlt Lib "gdi32" _
(ByVal hDestDC As Integer, ByVal x As Integer, _
ByVal y As Integer, ByVal nWidth As Integer, _
ByVal nHeight As Integer, ByVal _
hSrcDC As Integer, ByVal xSrc As Integer, _
ByVal ySrc As Integer, ByVal dwRop As _
Long) As Integer
Declare Function GetDesktopWindow Lib "user32" () As Long
Declare Function GetDC Lib "user32" _
(ByVal hwnd As Long) As Long
Public Const SRCCOPY = &HCC0020
Public Const SRCAND = &H8800C6
Public Const SRCINVERT = &H660046
VBcoders'Add this code to the form_load event
'or whatever you want to make it occur
'Get the hWnd of the desktop
DeskhWnd& = GetDesktopWindow()
'BitBlt needs the DC to copy the image. So, we
'need the GetDC API.
DeskDC& = GetDC(DeskhWnd&)
BitBlt Form1.hDC, 0&, 0&, _
Screen.Width, Screen.Height, DeskDC&, _
0&, 0&, SRCCOPY
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'Check out my site at http://www.vbtutor.com
'Thanks
