Question

请高手解答：如何在vb.net中的webbrowser控件中绘图

比如在webbrowser中绘制一个点或一条线之类的
Private Sub DrawMap(ByVal CurrentPos As Integer)

Dim penBrush As Brush = New SolidBrush(Color.Black)
Dim blackThinPen As New Pen(Color.Red)
Dim curPoint As Point

curPoint = GetMapCoordinate(CurrentPos)
blackThinPen.Width = 6

Dim graphic As Graphics = WebBrowser1.CreateGraphics()

graphic.DrawLine(blackThinPen, curPoint.X, curPoint.Y, LastPoint.X, LastPoint.Y)
graphic.DrawEllipse(blackThinPen, curPoint.X, curPoint.Y, 6, 6)
graphic.DrawEllipse(blackThinPen, 50, 100, 9, 9)

End Sub

3条语句都没有效果，望热心人指点，不胜感激

Answer 1

webbrowser是不断刷新的。就算你绘了图，那个位置马上又被刷新为原来的样子，所以此路不通。

可不可以这样变通：
把你的图片制作好，然后在htm文件中引用它，最后通过webbrowser显示。