如何消除闪烁现象(用Panel1.CreateGraphics),请高手指点。谢谢
当我拖动Trackbar旋转(或缩放)图片时,会有闪烁现象,如何消除,Graphics不是用Me.CreateGraphics。谢谢
Private Sub TrackBar1_Scroll(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TrackBar1.Scroll
Dim g As Graphics
Dim bm As Bitmap
bm = New Bitmap("d:\00.jpg")
g = Panel1.CreateGraphics '不是用g=Me.CreateGraphics
g.TranslateTransform(Panel1.Width\2, Panel1.Height\2)
'一下两句二选一
'g.ScaleTransform(TrackBar1.Value)
g.RotateTransform(TrackBar1.Value)
g.Clear(Color.White)
'g.DrawImage(bm, -bm.Width \ 2, -bm.Height \ 2)
g.DrawImage(bm, 0, 0)
End Sub