WinForm 如何自定义开关控件

青旅半醒 2023-01-03 12:53 212阅读 0赞

先上结果：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hoaGhoaGhoaGh3d3d3d3d3d3d3_size_16_color_FFFFFF_t_70][]

由于WinForm中没有开关控件，需要自定义。下面就写我制作开关控件的步骤。

1、新建个WinForm程序，右键选择属性。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hoaGhoaGhoaGh3d3d3d3d3d3d3_size_16_color_FFFFFF_t_70 1][]

2、点击资源，将资源的类型修改为图像，然后将Button的图片复制进去（直接从文件夹里复制就行了）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hoaGhoaGhoaGh3d3d3d3d3d3d3_size_16_color_FFFFFF_t_70 2][]

3、新建用户控件，命名为OnOffButton。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hoaGhoaGhoaGh3d3d3d3d3d3d3_size_16_color_FFFFFF_t_70 3][]

在OnOffButton.cs中编写代码。

using System;
    using System.Drawing;
    using System.Windows.Forms;
    
    namespace WindowsFormsApp1
    {
        public enum CheckStyle
        {
            style1 = 0,
            style2 = 1,
            style3 = 2,
            style4 = 3,
            style5 = 4,
            style6 = 5
        };
        public partial class OnOffButton : UserControl
        {
            public OnOffButton()
            {
                InitializeComponent();
                //设置Style支持透明背景色并且双缓冲
                this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
                this.SetStyle(ControlStyles.DoubleBuffer, true);
                this.SetStyle(ControlStyles.ResizeRedraw, true);
                this.SetStyle(ControlStyles.Selectable, true);
                this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
                this.SetStyle(ControlStyles.UserPaint, true);
                this.BackColor = Color.Transparent;
                this.Cursor = Cursors.Hand;
                this.Size = new Size(87, 27);
            }
            bool isCheck = false;
    
            /// <summary>
            /// 是否选中
            /// </summary>
            public bool Checked
            {
                set { isCheck = value; this.Invalidate(); }
                get { return isCheck; }
            }
    
            CheckStyle checkStyle = CheckStyle.style1;
    
            /// <summary>
            /// 样式
            /// </summary>
            public CheckStyle CheckStyleX
            {
                set { checkStyle = value; this.Invalidate(); }
                get { return checkStyle; }
            }
    
            protected override void OnPaint(PaintEventArgs e)
            {
                Bitmap bitMapOn = null;
                Bitmap bitMapOff = null;
    
                if (checkStyle == CheckStyle.style1)
                {
                    bitMapOn = global::WindowsFormsApp1.Properties.Resources.btncheckon1;
                    bitMapOff = global::WindowsFormsApp1.Properties.Resources.btncheckoff1;
                }
                else if (checkStyle == CheckStyle.style2)
                {
                    bitMapOn = global::WindowsFormsApp1.Properties.Resources.btncheckon2;
                    bitMapOff = global::WindowsFormsApp1.Properties.Resources.btncheckoff2;
                }
                else if (checkStyle == CheckStyle.style3)
                {
                    bitMapOn = global::WindowsFormsApp1.Properties.Resources.btncheckon3;
                    bitMapOff = global::WindowsFormsApp1.Properties.Resources.btncheckoff3;
                }
                else if (checkStyle == CheckStyle.style4)
                {
                    bitMapOn = global::WindowsFormsApp1.Properties.Resources.btncheckon4;
                    bitMapOff = global::WindowsFormsApp1.Properties.Resources.btncheckoff4;
                }
                else if (checkStyle == CheckStyle.style5)
                {
                    bitMapOn = global::WindowsFormsApp1.Properties.Resources.btncheckon5;
                    bitMapOff = global::WindowsFormsApp1.Properties.Resources.btncheckoff5;
                }
                else if (checkStyle == CheckStyle.style6)
                {
                    bitMapOn = global::WindowsFormsApp1.Properties.Resources.btncheckon6;
                    bitMapOff = global::WindowsFormsApp1.Properties.Resources.btncheckoff6;
                }
    
                Graphics g = e.Graphics;
                Rectangle rec = new Rectangle(0, 0, this.Size.Width, this.Size.Height);
    
                if (isCheck)
                {
                    g.DrawImage(bitMapOn, rec);
                }
                else
                {
                    g.DrawImage(bitMapOff, rec);
                }
            }
    
            private void OnOffButton_Click(object sender, EventArgs e)
            {
                isCheck = !isCheck;
                this.Invalidate();
            }
        }
    }

然后编写OnOffButton.Designer.cs代码。主要修改组件设计器生成的代码

#region 组件设计器生成的代码
    
            /// <summary> 
            /// 设计器支持所需的方法 - 不要修改
            /// 使用代码编辑器修改此方法的内容。
            /// </summary>
            private void InitializeComponent()
            {
                this.SuspendLayout();        
                this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
                this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
                this.Name = "myButtonCheck";
                this.Click += new System.EventHandler(this.OnOffButton_Click);
                this.ResumeLayout(false);
            }

然后生成解决方案。就可以在工具箱里看到组件了。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hoaGhoaGhoaGh3d3d3d3d3d3d3_size_16_color_FFFFFF_t_70 4][]

将组件拖入Form中就可以使用。

代码链接：[https://download.csdn.net/download/hhhhhhhhhhwwwwwwwwww/14044575][https_download.csdn.net_download_hhhhhhhhhhwwwwwwwwww_14044575]

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hoaGhoaGhoaGh3d3d3d3d3d3d3_size_16_color_FFFFFF_t_70 1]: /images/20221119/d0137b78ba8a4f20928faade0506666a.png
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hoaGhoaGhoaGh3d3d3d3d3d3d3_size_16_color_FFFFFF_t_70 3]: /images/20221119/7104f770092e44d3a6676f388e1be747.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hoaGhoaGhoaGh3d3d3d3d3d3d3_size_16_color_FFFFFF_t_70 4]: /images/20221119/ee00c2c7d3f44ecf90fc7517ab9f606e.png
[https_download.csdn.net_download_hhhhhhhhhhwwwwwwwwww_14044575]: https://download.csdn.net/download/hhhhhhhhhhwwwwwwwwww/14044575