直接粘贴剪贴版的位图数据到Image控件

王朝other·作者佚名  2006-11-24
窄屏简体版  字體: |||超大  

调用范例:

Private Sub Command1_Click()

PasteToImage Me.Image0

End Sub

模块段代码:

Option Compare Database

Option Explicit

Declare Function OpenClipboard Lib "user32" (ByVal hWnd As Long) As Long

Declare Function CloseClipboard Lib "user32" () As Long

Declare Function GetClipboardData Lib "user32" (ByVal wFormat As Long) As Long

Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" _

(hpvDest As Any, hpvSource As Any, ByVal cbCopy As Long)

Public Const CF_TEXT = 1

Public Const CF_BITMAP = 2

Public Const CF_METAFILEPICT = 3

Public Const CF_DIB = 8

Public Const CF_ENHMETAFILE = 14

Public Sub PasteToImage(ByRef imgDest As Image)

Dim hBMP As Long

Dim arrData() As Byte

Dim biClrUsed As Long, biSizeImage As Long

OpenClipboard Application.hWndAccessApp

hBMP = GetClipboardData(CF_DIB)

CloseClipboard

If hBMP <> 0 Then

ReDim arrData(39)

CopyMemory ByVal VarPtr(arrData(0)), ByVal hBMP, 40

biClrUsed = ReadBytes(arrData, 32, 2)

biSizeImage = ReadBytes(arrData, 20, 4)

ReDim arrData(39 + biClrUsed * 8 + biSizeImage)

CopyMemory ByVal VarPtr(arrData(0)), ByVal hBMP, 40 + biClrUsed * 8 + biSizeImage

imgDest.PictureData = arrData

End If

End Sub

'以下均为二进制数据读取函数

Public Function Byt2Lng(ByRef a() As Byte, ByVal p As Long) As Long

If a(p + 3) <= 127 Then

Byt2Lng = ((CLng(a(p + 3)) * 256 + a(p + 2)) * 256 + a(p + 1)) * 256 + a(p)

Else

Byt2Lng = -1 - (((CLng(Not a(p + 3)) * 256 + (Not a(p + 2))) * 256 + (Not a(p + 1))) * 256 + (Not a(p)))

End If

End Function

Public Function Byt2Int(ByRef a() As Byte, ByVal p As Long) As Integer

If a(p + 1) <= 127 Then

Byt2Int = CInt(a(p + 1)) * 256 + a(p)

Else

Byt2Int = CInt(Not a(p + 1)) * 256 + (Not a(p)) + 1

End If

End Function

Public Function ReadBytes(a() As Byte, p As Long, t As Integer) As Long

If t = 1 Then

ReadBytes = a(p)

ElseIf t = 2 Then

ReadBytes = Byt2Int(a, p)

ElseIf t = 4 Then

ReadBytes = Byt2Lng(a, p)

End If

End Function

 
 
 
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