Private Declare Function CreateCompatibleDC Lib "gdi32" (ByVal hDC As Long) As Long
Private Declare Function CreateDIBSection Lib "gdi32" (ByVal hDC As Long, pBitmapInfo As BITMAPINFO, ByVal un As Long, ByVal lplpVoid As Long, ByVal handle As Long, ByVal dw As Long) As Long
Private Declare Function SelectObject Lib "gdi32" (ByVal hDC As Long, ByVal hObject 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 GetDIBits Lib "gdi32" (ByVal aHDC As Long, ByVal hBitmap As Long, ByVal nStartScan As Long, ByVal nNumScans As Long, lpBits As Any, lpBI As BITMAPINFO, ByVal wUsage As Long) As Long
Private Declare Function DeleteDC Lib "gdi32" (ByVal hDC As Long) As Long
Private Declare Function OleTranslateColor Lib "olepro32.dll" (ByVal OLE_COLOR As Long, ByVal hPalette As Long, pccolorref As Long) As Long
Private Declare Function CreateRectRgn Lib "gdi32" (ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long
Private Declare Function CombineRgn Lib "gdi32" (ByVal hDestRgn As Long, ByVal hSrcRgn1 As Long, ByVal hSrcRgn2 As Long, ByVal nCombineMode As Long) As Long
Private Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long
Private Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function SetWindowRgn Lib "user32" (ByVal hwnd As Long, ByVal hRgn As Long, ByVal bRedraw As Boolean) As Long
Private Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) As Long
Private Declare Function GetBkColor Lib "gdi32" (ByVal hDC As Long) As Long
Private Declare Function RedrawWindow Lib "user32" (ByVal hwnd As Long, lprcUpdate As Any, ByVal hrgnUpdate As Long, ByVal fuRedraw As Long) As Long
Private Const BI_RGB As Long = 0&
Private Const RGN_OR As Long = 2&
Private Const DIB_RGB_COLORS As Long = 0&
Private Const RDW_INVALIDATE As Long = &H1
Public Function DoIT(objSource As Object) As Boolean
Dim lngRegion As Long
Dim lngBackColor As Long
Dim lngHeight As Long
Dim lngWidth As Long
Dim lnghWnd As Long
Dim rcRect As RECT
On Local Error Resume Next
If objSource.hwnd = 0 Or objSource.BackColor = 0 Then 'trap if object hasnt .backcolor or .hwnd
DoIT = False
Exit Function
End If
If Err.Number = 438 Then 'Object doesnt allow .backcolor or .hwnd!
DoIT = False
Exit Function
End If
lnghWnd = objSource.hwnd
Call GetWindowRect(lnghWnd, rcRect) 'get rect of object
lngHeight = rcRect.Bottom - rcRect.Top 'height
lngWidth = rcRect.Right - rcRect.Left 'width
If lngHeight > 0 Or lngWidth > 0 Then
Call OleTranslateColor(objSource.BackColor, 0, lngBackColor) 'translate color
lngRegion = RegionFromBitmap(lnghWnd, lngHeight, lngWidth, lngBackColor) 'create region
If lngRegion = 0 Then
DoIT = False
Else
If SetWindowRgn(lnghWnd, lngRegion, True) = 1 Then 'set new region
If RedrawWindow(lnghWnd, ByVal 0&, ByVal 0&, RDW_INVALIDATE) = 0 Then
DoIT = False
Else
DoIT = True
End If
Else
DoIT = False
End If
End If
DeleteObject lngRegion 'delete region to free some memory
Else
DoIT = False
End If
End Function
Private Function RegionFromBitmap(ByVal lnghWnd As Long, ByVal lngH As Long, ByVal lngW As Long, ByVal lngTransColor As Long) As Long
Dim lngRetr As Long, lngHeight As Long, lngWidth As Long
Dim lngRgnFinal As Long, lngRgnTmp As Long
Dim lngStart As Long
Dim x As Long, y As Long
Dim hDC As Long
Dim bi24BitInfo As BITMAPINFO
Dim iBitmap As Long
Dim BWidth As Long
Dim BHeight As Long
Dim iDC As Long
Dim PicBits() As Byte
Dim Col As Long
hDC = GetDC(lnghWnd)
lngWidth = lngW '- 1
lngHeight = lngH - 1
BWidth = (lngW \ 4) * 4 + 4
BHeight = lngH
'Bitmap-Header
With bi24BitInfo.bmiHeader
.biBitCount = 24
.biCompression = BI_RGB
.biPlanes = 1
.biSize = Len(bi24BitInfo.bmiHeader)
.biWidth = BWidth
.biHeight = BHeight + 1
End With
ReDim PicBits(0 To bi24BitInfo.bmiHeader.biWidth * 3 - 1, 0 To bi24BitInfo.bmiHeader.biHeight - 1)
