by Waty Thierry (60 Submissions)
Category: Graphics
Compatability: Visual Basic 4.0 (32-bit)
Difficulty: Unknown Difficulty
Originally Published: Tue 30th March 1999
Date Added: Mon 8th February 2021
Rating: 
(1 Votes)
Copy the entire contents of a PictureBox to the clipboard
API Declarations
' * Programmer Name : Waty Thierry
' * Web Site : www.geocities.com/ResearchTriangle/6311/
' * E-Mail : [email protected]
' * Date : 7/10/98
' * Time : 16:59
' * Module Name : Clipboard_Module
' * Module Filename : Clipboard.bas
' **********************************************************************
' * Comments : Clipboard functions
' *
' *
' **********************************************************************
Option Explicit
' General functions:
Private Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
' GDI functions:
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
' Creates a memory DC
Declare Function CreateCompatibleDC Lib "gdi32" (ByVal hdc As Long) As Long
' Creates a bitmap in memory:
Declare Function CreateCompatibleBitmap Lib "gdi32" (ByVal hdc As Long, ByVal nWidth As Long, ByVal nHeight As Long) As Long
' Places a GDI Object into DC, returning the previous one:
Declare Function SelectObject Lib "gdi32" (ByVal hdc As Long, ByVal hObject As Long) As Long
' Deletes a GDI Object:
Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long
' Clipboard functions:
Private Declare Function OpenClipboard Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function CloseClipboard Lib "user32" () As Long
Private Declare Function SetClipboardData Lib "user32" (ByVal wFormat As Long, ByVal hMem As Long) As Long
Private Declare Function GetClipboardFormatName Lib "user32" Alias "GetClipboardFormatNameA" (ByVal wFormat As Long, ByVal lpString As String, ByVal nMaxCount As Long) As Long
Private Declare Function EmptyClipboard Lib "user32" () As Long
Private Declare Function CountClipboardFormats Lib "user32" () As Long
Private Declare Function EnumClipboardFormats Lib "user32" (ByVal wFormat As Long) As Long
Private Declare Function IsClipboardFormatAvailable Lib "user32" (ByVal wFormat As Long) As Long
Private Declare Function RegisterClipboardFormat Lib "user32" Alias "RegisterClipboardFormatA" (ByVal lpString As String) As Long
Private Declare Function GetClipboardData Lib "user32" (ByVal wFormat As Long) As Long
' Memory functions:
Private Declare Function GlobalLock Lib "kernel32" (ByVal hMem As Long) As Long
Private Declare Function GlobalUnlock Lib "kernel32" (ByVal hMem As Long) As Long
Private Declare Function GlobalSize Lib "kernel32" (ByVal hMem As Long) As Long
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (lpvDest As Any, lpvSource As Any, ByVal cbCopy As Long)
Public Enum EPredefinedClipboardFormatConstants
[_First] = 1
CF_TEXT = 1
CF_BITMAP = 2
CF_METAFILEPICT = 3
CF_SYLK = 4
CF_DIF = 5
CF_TIFF = 6
CF_OEMTEXT = 7
CF_DIB = 8
CF_PALETTE = 9
CF_PENDATA = 10
CF_RIFF = 11
CF_WAVE = 12
CF_UNICODETEXT = 13
CF_ENHMETAFILE = 14
CF_HDROP = 15
CF_LOCALE = 16
CF_MAX = 17
[_Last] = 17
End Enum
VBcoders
' #VBIDEUtils#************************************************************
' * Programmer Name : Waty Thierry
' * Web Site : www.geocities.com/ResearchTriangle/6311/
' * E-Mail : [email protected]
' * Date : 7/10/98
' * Time : 16:59
' * Module Name : Clipboard_Module
' * Module Filename : Clipboard.bas
' * Procedure Name : CopyEntirePictureToClipboard
' * Parameters :
' * ByRef objFrom As Object
' **********************************************************************
' * Comments : Copy the entire contents of a PictureBox to the clipboard
' *
' *
' **********************************************************************
Dim lhDC As Long
Dim lhBmp As Long
Dim lhBmpOld As Long
' Create a DC compatible with the object we're copying
' from:
lhDC = CreateCompatibleDC(objFrom.hdc)
If (lhDC <> 0) Then
' Create a bitmap compatible with the object we're
' copying from:
lhBmp = CreateCompatibleBitmap(objFrom.hdc, objFrom.ScaleWidth \ Screen.TwipsPerPixelX, objFrom.ScaleHeight \ Screen.TwipsPerPixelY)
If (lhBmp <> 0) Then
' Select the bitmap into the DC we have created,
' and store the old bitmap that was there:
lhBmpOld = SelectObject(lhDC, lhBmp)
' Copy the contents of objFrom to the bitmap:
BitBlt lhDC, 0, 0, objFrom.ScaleWidth \ Screen.TwipsPerPixelX, objFrom.ScaleHeight \ Screen.TwipsPerPixelY, objFrom.hdc, 0, 0, SRCCOPY
' Remove the bitmap from the DC:
SelectObject lhDC, lhBmpOld
' Now set the clipboard to the bitmap:
EmptyClipboard
OpenClipboard 0
SetClipboardData CF_BITMAP, lhBmp
CloseClipboard
' We don't delete the Bitmap here - it is now owned
' by the clipboard and Windows will delete it for us
' when the clipboard changes or the program exits.
End If
' Clear up the device context we created:
DeleteObject lhDC
CopyEntirePictureToClipboard = True
Else
CopyEntirePictureToClipboard = False
End If
End Function
