与圆角边框形成在C＃中？ [英] Form with Rounded Borders in C#?

问题描述

我使用此代码使窗体没有边框样式：

I am using this code to make the form have no border style:

this.FormBorderStyle = FormBorderStyle.None;

我需要在表格上圆边。

I need to make rounded edges on the form.

有没有一种简单的方法？我该怎么做呢？

Is there an easy way? How do I do it?

推荐答案

下面是它实现了答案在我的评论

Here's a full form class which implements the answer in my comment

using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        [DllImport("Gdi32.dll", EntryPoint = "CreateRoundRectRgn")]
        private static extern IntPtr CreateRoundRectRgn
        (
            int nLeftRect, // x-coordinate of upper-left corner
            int nTopRect, // y-coordinate of upper-left corner
            int nRightRect, // x-coordinate of lower-right corner
            int nBottomRect, // y-coordinate of lower-right corner
            int nWidthEllipse, // height of ellipse
            int nHeightEllipse // width of ellipse
         );

        public Form1()
        {
            InitializeComponent();
            this.FormBorderStyle = FormBorderStyle.None;
            Region = System.Drawing.Region.FromHrgn(CreateRoundRectRgn(0, 0, Width, Height, 20, 20));
        }
    }
}

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