跨线程图片盒pointtoscreen

本文介绍了跨线程图片盒pointtoscreen的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

Using bitmap As New Bitmap(CameraView.Width, CameraView.Height)
      Using g As Graphics = Graphics.FromImage(bitmap)
           ' Get the paramters to call g.CopyFromScreen and get the image
           Dim rectanglePanelVideoPreview As Rectangle = CameraView.Bounds
           Dim sourcePoints As System.Drawing.Point = CameraView.PointToScreen(New System.Drawing.Point(CameraView.ClientRectangle.X, CameraView.ClientRectangle.Y))
            g.CopyFromScreen(sourcePoints, System.Drawing.Point.Empty, rectanglePanelVideoPreview.Size)
       End Using
End Using

i希望使用backgroundworker来执行该代码，但因使用PointToScreen而出现错误。

请帮我重新编写跨线程代码。 Thx

i want to use backgroundworker to do that code, but got error because use PointToScreen.
Please help me re-code with cross-thread. Thx

推荐答案

If Me.InvokeRequired Then
    Me.Invoke(New MethodInvoker(AddressOf AccessControl))
Else

查看此链接了解更多信息：

[]

祝你好运！

Check this link for more info:
http://msdn.microsoft.com/en-us/library/ms171728%28v=vs.85%29.aspx?cs-save-lang=1&cs-lang=vb#code-snippet-1[^]

Good luck!

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