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8.7

StretchBlt in VB.NET

Asked by PerryDaynac in Microsoft Visual Basic.Net, .NET Framework 3.x versions

Tags: VB.NET, API

Hi Experts,

I have an large old VB6 program that I need to convert to VB.NET (2005).
It has a window (via a picturebox) that show a zoom of the area around the mouse pointer with StretchBlt.
In other words I want to use StretchBlt to copy the area around the mouse and show it in my picturebox (alt. panel).

The code parts that works in VB6 that I'm not getting to work in VB.NET:

------------------------------------------------
Private Sub DoZoom(ptMouse As POINTAPI)

hWndDesk = GetDesktopWindow()
hDCDesk = GetDC(hWndDesk)

picZoom.Cls

lRet = StretchBlt(picZoom.hDc, sizDest.Left, sizDest.Top, sizDest.width, sizDest.height,
hDCDesk, sizSrce.Left, sizSrce.Top, sizSrce.width, sizSrce.height, SRCCOPY)

lRet = ReleaseDC(hWndDesk, hDCDesk)

picZoom.Refresh

End Sub
------------------------------------------------

It feels like I've tried everything, without getting it to work.

Thanks
Perry

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StretchBlt in VB.NET

Asked by PerryDaynac in Microsoft Visual Basic.Net, .NET Framework 3.x versions

Tags: VB.NET, API

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