比较急的问题，关于picturebox上图形重画的。

[lxcy]

在窗体上放一个button，一个picturebox

Private Sub PictureBox1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles PictureBox1.Paint
Dim Ipen As Pen = New Pen(Color.Red, 3)
Dim Igraph As Graphics = PictureBox1.CreateGraphics
Igraph.DrawLine(Ipen, 12, 13, 45, 167)

End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim Ipen As Pen = New Pen(Color.Red, 3)
Dim Igraph As Graphics = PictureBox1.CreateGraphics
Igraph.DrawLine(Ipen, 12, 13, 45, 167)

End Sub
这样窗体在最小化后，再激活，根本无图形。
当picturebox控件被其它窗体遮掩住时，遮掩它的窗体移动一下，依然没有图形，要移动两次，才会重新画出来。
奇怪，好像paint事件的代码执行无效。

我用的是vb2005，请帮忙看一下，谢谢！

[myminimouse]

帮顶~

[fencole]

帮顶jf

[xiaohuasz]

Dim Igraph As Graphics = PictureBox1.CreateGraphics
改为：Dim Igrapg As Graphics = e.Graphics