添加一个Command1一个Picture1,下面的代码可以抓取本程序窗口的全部图像。如果是抓其他程序、指定区域,就自己改一下吧。 Private Type PALETTEENTRY peRed As Byte peGreen As Byte peBlue As Byte peFlags As Byte End Type Private Type LOGPALETTE palVersion As Integer palNumEntries As Integer palPalEntry(1) As PALETTEENTRY End Type Private Type RECT Left As Long Top As Long Right As Long Bottom As Long End Type Private Type PicBmp Size As Long Type As Long hBmp As Long hPal As Long Reserved As Long End Type Private Type GUID Data1 As Long Data2 As Integer Data3 As Integer Data4(7) As Byte End TypePrivate Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) As Long Private Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long Private Declare Function GetWindowDC Lib "user32" (ByVal hwnd As Long) As Long Private Declare Function CreateCompatibleDC Lib "GDI32" (ByVal hDC As Long) As Long Private Declare Function CreateCompatibleBitmap Lib "GDI32" (ByVal hDC As Long, ByVal nWidth As Long, ByVal nHeight As Long) As Long Private Declare Function SelectObject Lib "GDI32" (ByVal hDC As Long, ByVal hObject As Long) As Long Private Declare Function GetDeviceCaps Lib "GDI32" (ByVal hDC As Long, ByVal iCapabilitiy As Long) As Long Private Declare Function GetSystemPaletteEntries Lib "GDI32" (ByVal hDC As Long, ByVal wStartIndex As Long, ByVal wNumEntries As Long, lpPaletteEntries As PALETTEENTRY) As Long Private Declare Function CreatePalette Lib "GDI32" (lpLogPalette As LOGPALETTE) As Long Private Declare Function SelectPalette Lib "GDI32" (ByVal hDC As Long, ByVal hPalette As Long, ByVal bForceBackground As Long) As Long Private Declare Function RealizePalette Lib "GDI32" (ByVal hDC As Long) As Long Private Declare Function BitBlt Lib "GDI32" (ByVal hDCDest As Long, ByVal XDest As Long, ByVal YDest As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hDCSrc As Long, ByVal XSrc As Long, ByVal YSrc As Long, ByVal dwRop As Long) As Long Private Declare Function DeleteDC Lib "GDI32" (ByVal hDC As Long) As Long Private Declare Function ReleaseDC Lib "user32" (ByVal hwnd As Long, ByVal hDC As Long) As Long Private Declare Function OleCreatePictureIndirect Lib "olepro32.dll" (PicDesc As PicBmp, RefIID As GUID, ByVal fPictureOwnsHandle As Long, IPic As IPicture) As LongPrivate Sub Command1_Click() WinhWnd = Me.hwnd '这个是抓取窗口的句柄 Dim RectActive As RECT Dim hDCMemory As Long Dim hBmp As Long Dim hBmpPrev As Long Dim hDCSrc As Long Dim hPal As Long Dim hPalPrev As Long Dim RasterCapsScrn As Long Dim HasPaletteScrn As Long Dim PaletteSizeScrn As Long Dim LogPal As LOGPALETTE Dim WidthSrc As Long, HeightSrc As Long
GetWindowRect WinhWnd, RectActive WidthSrc = RectActive.Right - RectActive.Left HeightSrc = RectActive.Bottom - RectActive.Top hDCSrc = GetWindowDC(WinhWnd) ' Get device context for entire window. hDCMemory = CreateCompatibleDC(hDCSrc) ' Create a memory device context for the copy process. hBmp = CreateCompatibleBitmap(hDCSrc, WidthSrc, HeightSrc) ' Create a bitmap and place it in the memory DC. hBmpPrev = SelectObject(hDCMemory, hBmp) ' Get screen properties. RasterCapsScrn = GetDeviceCaps(hDCSrc, RASTERCAPS) ' Raster capabilities. HasPaletteScrn = RasterCapsScrn And RC_PALETTE ' Palette support. PaletteSizeScrn = GetDeviceCaps(hDCSrc, SIZEPALETTE) ' Size of palette. ' If the screen has a palette make a copy and realize it. If HasPaletteScrn And (PaletteSizeScrn = 256) Then ' Create a copy of the system palette. LogPal.palVersion = &H300 LogPal.palNumEntries = 256 GetSystemPaletteEntries hDCSrc, 0, 256, LogPal.palPalEntry(0) hPal = CreatePalette(LogPal) ' Select the new palette into the memory DC and realize it. hPalPrev = SelectPalette(hDCMemory, hPal, 0) RealizePalette hDCMemory End If ' Copy the on-screen image into the memory DC. BitBlt hDCMemory, 0, 0, WidthSrc, HeightSrc, hDCSrc, 0, 0, vbSrcCopy ' Remove the new copy of the on-screen image. hBmp = SelectObject(hDCMemory, hBmpPrev) ' If the screen has a palette get back the palette that was ' selected in previously. If HasPaletteScrn And (PaletteSizeScrn = 256) Then hPal = SelectPalette(hDCMemory, hPalPrev, 0) End If ' Release the device context resources back to the system. DeleteDC hDCMemory ReleaseDC WinhWnd, hDCSrc
' =================Create a picture object from the bitmap and palette handles. Dim r As Long
Dim Pic As PicBmp ' IPicture requires a reference to "Standard OLE Types." Dim IPic As IPicture Dim IID_IDispatch As GUID
' Fill in with IDispatch Interface ID. With IID_IDispatch .Data1 = &H20400 .Data4(0) = &HC0 .Data4(7) = &H46 End With
' Fill Pic with necessary parts. With Pic .Size = Len(Pic) ' Length of structure. .Type = vbPicTypeBitmap ' Type of Picture (bitmap). .hBmp = hBmp ' Handle to bitmap. .hPal = hPal ' Handle to palette (may be null). End With
' Create Picture object. r = OleCreatePictureIndirect(Pic, IID_IDispatch, 1, IPic)
' Return the new Picture object. Me.Picture1.Picture = IPic End Sub
Private Type PALETTEENTRY
peRed As Byte
peGreen As Byte
peBlue As Byte
peFlags As Byte
End Type
Private Type LOGPALETTE
palVersion As Integer
palNumEntries As Integer
palPalEntry(1) As PALETTEENTRY
End Type
Private Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Private Type PicBmp
Size As Long
Type As Long
hBmp As Long
hPal As Long
Reserved As Long
End Type
Private Type GUID
Data1 As Long
Data2 As Integer
Data3 As Integer
Data4(7) As Byte
End TypePrivate Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) As Long
Private Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function GetWindowDC Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function CreateCompatibleDC Lib "GDI32" (ByVal hDC As Long) As Long
Private Declare Function CreateCompatibleBitmap Lib "GDI32" (ByVal hDC As Long, ByVal nWidth As Long, ByVal nHeight As Long) As Long
Private Declare Function SelectObject Lib "GDI32" (ByVal hDC As Long, ByVal hObject As Long) As Long
Private Declare Function GetDeviceCaps Lib "GDI32" (ByVal hDC As Long, ByVal iCapabilitiy As Long) As Long
Private Declare Function GetSystemPaletteEntries Lib "GDI32" (ByVal hDC As Long, ByVal wStartIndex As Long, ByVal wNumEntries As Long, lpPaletteEntries As PALETTEENTRY) As Long
Private Declare Function CreatePalette Lib "GDI32" (lpLogPalette As LOGPALETTE) As Long
Private Declare Function SelectPalette Lib "GDI32" (ByVal hDC As Long, ByVal hPalette As Long, ByVal bForceBackground As Long) As Long
Private Declare Function RealizePalette Lib "GDI32" (ByVal hDC As Long) As Long
Private Declare Function BitBlt Lib "GDI32" (ByVal hDCDest As Long, ByVal XDest As Long, ByVal YDest As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hDCSrc As Long, ByVal XSrc As Long, ByVal YSrc As Long, ByVal dwRop As Long) As Long
Private Declare Function DeleteDC Lib "GDI32" (ByVal hDC As Long) As Long
Private Declare Function ReleaseDC Lib "user32" (ByVal hwnd As Long, ByVal hDC As Long) As Long
Private Declare Function OleCreatePictureIndirect Lib "olepro32.dll" (PicDesc As PicBmp, RefIID As GUID, ByVal fPictureOwnsHandle As Long, IPic As IPicture) As LongPrivate Sub Command1_Click()
WinhWnd = Me.hwnd '这个是抓取窗口的句柄 Dim RectActive As RECT
Dim hDCMemory As Long
Dim hBmp As Long
Dim hBmpPrev As Long
Dim hDCSrc As Long
Dim hPal As Long
Dim hPalPrev As Long
Dim RasterCapsScrn As Long
Dim HasPaletteScrn As Long
Dim PaletteSizeScrn As Long
Dim LogPal As LOGPALETTE
Dim WidthSrc As Long, HeightSrc As Long
GetWindowRect WinhWnd, RectActive
WidthSrc = RectActive.Right - RectActive.Left
HeightSrc = RectActive.Bottom - RectActive.Top
hDCSrc = GetWindowDC(WinhWnd) ' Get device context for entire window.
hDCMemory = CreateCompatibleDC(hDCSrc) ' Create a memory device context for the copy process.
hBmp = CreateCompatibleBitmap(hDCSrc, WidthSrc, HeightSrc) ' Create a bitmap and place it in the memory DC.
hBmpPrev = SelectObject(hDCMemory, hBmp)
' Get screen properties.
RasterCapsScrn = GetDeviceCaps(hDCSrc, RASTERCAPS) ' Raster capabilities.
HasPaletteScrn = RasterCapsScrn And RC_PALETTE ' Palette support.
PaletteSizeScrn = GetDeviceCaps(hDCSrc, SIZEPALETTE) ' Size of palette.
' If the screen has a palette make a copy and realize it.
If HasPaletteScrn And (PaletteSizeScrn = 256) Then
' Create a copy of the system palette.
LogPal.palVersion = &H300
LogPal.palNumEntries = 256
GetSystemPaletteEntries hDCSrc, 0, 256, LogPal.palPalEntry(0)
hPal = CreatePalette(LogPal)
' Select the new palette into the memory DC and realize it.
hPalPrev = SelectPalette(hDCMemory, hPal, 0)
RealizePalette hDCMemory
End If
' Copy the on-screen image into the memory DC.
BitBlt hDCMemory, 0, 0, WidthSrc, HeightSrc, hDCSrc, 0, 0, vbSrcCopy
' Remove the new copy of the on-screen image.
hBmp = SelectObject(hDCMemory, hBmpPrev)
' If the screen has a palette get back the palette that was
' selected in previously.
If HasPaletteScrn And (PaletteSizeScrn = 256) Then
hPal = SelectPalette(hDCMemory, hPalPrev, 0)
End If
' Release the device context resources back to the system.
DeleteDC hDCMemory
ReleaseDC WinhWnd, hDCSrc
' =================Create a picture object from the bitmap and palette handles.
Dim r As Long
Dim Pic As PicBmp
' IPicture requires a reference to "Standard OLE Types."
Dim IPic As IPicture
Dim IID_IDispatch As GUID
' Fill in with IDispatch Interface ID.
With IID_IDispatch
.Data1 = &H20400
.Data4(0) = &HC0
.Data4(7) = &H46
End With
' Fill Pic with necessary parts.
With Pic
.Size = Len(Pic) ' Length of structure.
.Type = vbPicTypeBitmap ' Type of Picture (bitmap).
.hBmp = hBmp ' Handle to bitmap.
.hPal = hPal ' Handle to palette (may be null).
End With
' Create Picture object.
r = OleCreatePictureIndirect(Pic, IID_IDispatch, 1, IPic)
' Return the new Picture object.
Me.Picture1.Picture = IPic
End Sub