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Modulcode für Screencapturing:
Option Explicit
' Example usage :
'
' Set Picture1.Picture = CaptureForm(Me)
' PrintPicture Printer, Picture2.Picture
' Printer.EndDoc
'
' or :
'
' Dim oPic As StdPicture
'
' Set oPic = CaptureWindow(0, 0, 0, \_
' Screen.Width / Screen.TwipsPerPixelX, \_
' Screen.Height / Screen.TwipsPerPixelY)
'
'
Option Base 0
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
'Enough for 256 colors
palPalEntry(255) As PALETTEENTRY
End Type
Private Type GUID
Data1 As Long
Data2 As Integer
Data3 As Integer
Data4(7) As Byte
End Type
Private Const RASTERCAPS As Long = 38
Private Const RC\_PALETTE As Long = &H100
Private Const SIZEPALETTE As Long = 104
Private Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Private Type PicBmp
Size As Long
bitMapType As Long
hBmp As Long
hPal As Long
Reserved As Long
End Type
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 CreateCompatibleBitmap Lib \_
"GDI32" (ByVal hDC As Long, ByVal nWidth As Long, \_
ByVal nHeight As Long) As Long
Private Declare Function CreateCompatibleDC Lib "GDI32" ( \_
ByVal hDC As Long) As Long
Private Declare Function CreatePalette Lib "GDI32" ( \_
lpLogPalette As LOGPALETTE) As Long
Private Declare Function DeleteDC Lib "GDI32" ( \_
ByVal hDC 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 GetWindowDC Lib "USER32" ( \_
ByVal hWnd 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 Long
Private Declare Function RealizePalette 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 SelectObject Lib "GDI32" ( \_
ByVal hDC As Long, ByVal hObject As Long) As Long
Private Declare Function SelectPalette Lib "GDI32" ( \_
ByVal hDC As Long, ByVal hPalette As Long, \_
ByVal bForceBackground As Long) As Long
Public Function CaptureForm(frmSrc As Form) As Picture
On Error GoTo ErrorRoutineErr
'Call CaptureWindow to capture the entire form
'given it's window
'handle and then return the resulting Picture object
Set CaptureForm = CaptureWindow(frmSrc.hWnd, 0, 0, \_
frmSrc.ScaleX(frmSrc.Width, vbTwips, vbPixels), \_
frmSrc.ScaleY(frmSrc.Height, vbTwips, vbPixels))
ErrorRoutineResume:
Exit Function
ErrorRoutineErr:
MsgBox "Project1.Module1.CaptureForm" & Err & Error
Resume Next
End Function
Public Function CreateBitmapPicture(ByVal hBmp As Long, \_
ByVal hPal As Long) As Picture
On Error GoTo ErrorRoutineErr
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
'Length of structure
.Size = Len(Pic)
'Type of Picture (bitmap)
.bitMapType = vbPicTypeBitmap
'Handle to bitmap
.hBmp = hBmp
'Handle to palette (may be null)
.hPal = hPal
End With
'Create Picture object
r = OleCreatePictureIndirect(Pic, IID\_IDispatch, 1, IPic)
'Return the new Picture object
Set CreateBitmapPicture = IPic
ErrorRoutineResume:
Exit Function
ErrorRoutineErr:
MsgBox "Project1.Module1.CreateBitmapPicture" & Err & Error
Resume Next
End Function
Public Function CaptureWindow(ByVal hWndSrc As Long, \_
ByVal LeftSrc As Long, \_
ByVal TopSrc As Long, ByVal WidthSrc As Long, \_
ByVal HeightSrc As Long) As Picture
On Error GoTo ErrorRoutineErr
Dim hDCMemory As Long
Dim hBmp As Long
Dim hBmpPrev As Long
Dim rc 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
'get device context for the window
hDCSrc = GetWindowDC(hWndSrc)
'Create a memory device context for the copy process
hDCMemory = CreateCompatibleDC(hDCSrc)
'Create a bitmap and place it in the memory DC
hBmp = CreateCompatibleBitmap(hDCSrc, WidthSrc, HeightSrc)
hBmpPrev = SelectObject(hDCMemory, hBmp)
'get screen properties
'Raster capabilities
RasterCapsScrn = GetDeviceCaps(hDCSrc, RASTERCAPS)
'Palette support
HasPaletteScrn = RasterCapsScrn And RC\_PALETTE
'Size of palette
PaletteSizeScrn = GetDeviceCaps(hDCSrc, SIZEPALETTE)
'If the screen has a palette, make a copy
If HasPaletteScrn And (PaletteSizeScrn = 256) Then
'Create a copy of the system palette
LogPal.palVersion = &H300
LogPal.palNumEntries = 256
rc = 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)
rc = RealizePalette(hDCMemory)
End If
'Copy the image into the memory DC
rc = BitBlt(hDCMemory, 0, 0, WidthSrc, HeightSrc, \_
hDCSrc, LeftSrc, TopSrc, 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
rc = DeleteDC(hDCMemory)
rc = ReleaseDC(hWndSrc, hDCSrc)
'Call CreateBitmapPicture to create a picture
'object from the bitmap and palette handles.
'then return the resulting picture object.
Set CaptureWindow = CreateBitmapPicture(hBmp, hPal)
ErrorRoutineResume:
Exit Function
ErrorRoutineErr:
MsgBox "CaptureWindow" & Err & Error
Resume Next
End Function
Public Sub PrintPicture(Prn As Printer, Pic As Picture)
On Error GoTo ErrorRoutineErr
'
' Prints out the selected picture to the printer
'
Prn.PaintPicture Pic, 0, 0
ErrorRoutineResume:
Exit Sub
ErrorRoutineErr:
MsgBox "PrintPicture" & Err & Error
Resume Next
End Sub
Modulcode für Hotkey:
Declare Function SendMessage Lib "USER32" Alias \_
"SendMessageA" (ByVal hWnd As Long, \_
ByVal wMsg As Long, ByVal wParam As Long, \_
lParam As Long) As Long
Declare Function DefWindowProc Lib "USER32" \_
Alias "DefWindowProcA" (ByVal hWnd As Long, \_
ByVal wMsg As Long, ByVal wParam As Long, \_
ByVal lParam As Long) As Long
Public Const WM\_SETHOTKEY = &H32
Public Const WM\_SHOWWINDOW = &H18
Public Const HK\_SHIFTA = &H141 'Shift + A
Public Const HK\_SHIFTB = &H142 'Shift + B
Public Const HK\_CONTROLA = &H241 'Strg + A
Public Const HK\_ALTP = &H450 'Alt + P