如何在表格上剪一个洞？ [英] How do I cut a hole on a Form?

问题描述

如何在VB.NET 2010中创建/剪切圆孔？

How do I create/cut a circular hole in VB.NET 2010?

推荐答案

您尚未指定是使用Windows窗体还是WPF，而是因为你谈到一个表单，我假设你使用Windows Forms。



首先，将其添加到代码文件的顶部：

You haven't specified whether you use Windows Forms or WPF, but because you talk about a "Form", I assume you use Windows Forms.

First, add this to the top of your code file:

Imports System.Drawing.Drawing2D

为了打个洞，请执行以下操作：

And to make a hole, do this:

Dim hole As New GraphicsPath()
Dim x As Integer = 0
Dim y As Integer = 0
Dim width As Integer = 100
Dim height As Integer = 100
hole.AddEllipse(x, y, width, height)
Dim formRegion As New Region(New Rectangle(Point.Empty, Me.Size))
formRegion.Exclude(hole)
Me.Region = formRegion

请注意，这有副作用：将值设置为 Me.Region 后，样式为表格边框更改。

Note that this has a side effect: after setting a value to Me.Region, the style of the form border changes.

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