كود برنامج يقوم بالتقاط صورة لسطح المكتب

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كود برنامج يقوم بالتقاط صورة لسطح المكتب

مُساهمة من طرف أيمن الإبراهيم في الثلاثاء فبراير 04, 2014 2:34 pm

اهلا وسهلا بكم في منتدى مصر التقني
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هذا الكود يقوم بالتقاط صورة لسطح المكتب  

' ضع هذا الكود في الفورم
الكود:

Const RC_PALETTE As Long = &H100
Const SIZEPALETTE As Long = 104
Const RASTERCAPS As Long = 38
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(255) As PALETTEENTRY ' Enough for 256 colors
End Type
Private Type GUID
   Data1 As Long
   Data2 As Integer
   Data3 As Integer
   Data4(7) As Byte
End Type
Private Type PicBmp
   Size As Long
   Type As Long
   hBmp As Long
   hPal As Long
   Reserved As Long
End Type
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 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 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 Declare Function DeleteDC Lib "gdi32" (ByVal hdc As Long) As Long
Private Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long
Function CreateBitmapPicture(ByVal hBmp As Long, ByVal hPal As Long) As Picture
   Dim R As Long, Pic As PicBmp, IPic As IPicture, IID_IDispatch As GUID

   'Fill GUID info
   With IID_IDispatch
       .Data1 = &H20400
       .Data4(0) = &HC0
       .Data4(7) = &H46
   End With

   'Fill picture info
   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 the picture
   R = OleCreatePictureIndirect(Pic, IID_IDispatch, 1, IPic)

   'Return the new picture
   Set CreateBitmapPicture = IPic
End Function
Function hDCToPicture(ByVal hDCSrc As Long, ByVal LeftSrc As Long, ByVal TopSrc As Long, ByVal WidthSrc As Long, ByVal HeightSrc As Long) As Picture
   Dim hDCMemory As Long, hBmp As Long, hBmpPrev As Long, R As Long
   Dim hPal As Long, hPalPrev As Long, RasterCapsScrn As Long, HasPaletteScrn As Long
   Dim PaletteSizeScrn As Long, LogPal As LOGPALETTE

   'Create a compatible device context
   hDCMemory = CreateCompatibleDC(hDCSrc)
   'Create a compatible bitmap
   hBmp = CreateCompatibleBitmap(hDCSrc, WidthSrc, HeightSrc)
   'Select the compatible bitmap into our compatible device context
   hBmpPrev = SelectObject(hDCMemory, hBmp)

   'Raster capabilities?
   RasterCapsScrn = GetDeviceCaps(hDCSrc, RASTERCAPS) ' Raster
   'Does our picture use a palette?
   HasPaletteScrn = RasterCapsScrn And RC_PALETTE ' Palette
   'What's the size of that palette?
   PaletteSizeScrn = GetDeviceCaps(hDCSrc, SIZEPALETTE) ' Size of

   If HasPaletteScrn And (PaletteSizeScrn = 256) Then
       'Set the palette version
       LogPal.palVersion = &H300
       'Number of palette entries
       LogPal.palNumEntries = 256
       'Retrieve the system palette entries
       R = GetSystemPaletteEntries(hDCSrc, 0, 256, LogPal.palPalEntry(0))
       'Create the palette
       hPal = CreatePalette(LogPal)
       'Select the palette
       hPalPrev = SelectPalette(hDCMemory, hPal, 0)
       'Realize the palette
       R = RealizePalette(hDCMemory)
   End If

   'Copy the source image to our compatible device context
   R = BitBlt(hDCMemory, 0, 0, WidthSrc, HeightSrc, hDCSrc, LeftSrc, TopSrc, vbSrcCopy)

   'Restore the old bitmap
   hBmp = SelectObject(hDCMemory, hBmpPrev)

   If HasPaletteScrn And (PaletteSizeScrn = 256) Then
       'Select the palette
       hPal = SelectPalette(hDCMemory, hPalPrev, 0)
   End If

   'Delete our memory DC
   R = DeleteDC(hDCMemory)

   Set hDCToPicture = CreateBitmapPicture(hBmp, hPal)
End Function
Private Sub Form_Load()
   'Create a picture object from the screen
   Set Me.Picture = hDCToPicture(GetDC(0), 0, 0, Screen.Width / Screen.TwipsPerPixelX, Screen.Height / Screen.TwipsPerPixelY)
End Sub

   مع تمنياتي لكم بالتوفيق
avatar
أيمن الإبراهيم
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تاريخ التسجيل : 19/03/2013
المساهمات : 251
النقاط : 397
التقيم : 0
الدولة : سوريا
الجنس : ذكر

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