请教各位专家，一个窗体里显示4张图片，想任意点击一张图片放大，图片在最前面，怎么解决呀！

给你写出代码：
 Private Sub PictureBox1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PictureBox1.Click
        Static bz1 As Boolean = False
        If bz1 = False Then
            bz1 = True           
            PictureBox1.Width = 4 * PictureBox1.Width
            PictureBox1.Height = 4 * PictureBox1.Height
            PictureBox1.BringToFront()
        Else
            bz1 = False
            PictureBox1.Width = 0.25 * PictureBox1.Width
            PictureBox1.Height = 0.25 * PictureBox1.Height
        End If
    ' 你可以对图片框显示位置做适当调整。

已调试，ok!感谢楼主！