GDI+透明问题？

Question

我想画一个苹果，想使其中间大部分是透明的，而边缘部分是不透明的，请问，如何实施！

Answer 1

你好！
画画 建议用wpf或者silverlight做
gdi+是处理技术 不是画画的

Answer 2

你可以在Windows SDK文档或者codeproject, codeguru这样的开源社区中搜索"Alpha Blending GDI+"

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Visual C++ MVP

Answer 3

Public Class Form1
    Private BkBmp As Bitmap
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        If BkBmp IsNot Nothing Then BkBmp.Dispose()
        BkBmp = New Bitmap(100, 100)
        Using G As Graphics = Graphics.FromImage(BkBmp)
            Using Gp As New Drawing2D.GraphicsPath()
                Gp.AddPie(New Rectangle(0, 0, 100, 100), 0, 360)
                Using Pgp As New Drawing2D.PathGradientBrush(Gp)
                    Pgp.CenterColor = Color.FromArgb(10, 255, 0, 0)
                    Pgp.SurroundColors = New Color() {Color.Red}
                    G.FillPath(Pgp, Gp)
                End Using
            End Using
        End Using
        Label1.Image = BkBmp
    End Sub
End Class

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虽然不是专业,努力学.

Answer 4

不是半透明的话 直接用 mask  就可以

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恭喜自己5星用户达成