Winform自定义窗体样式，实现标题栏可灵活自定义

最近在编写C/S结构应用程序时，感觉窗体的标题栏样式太死板了，标题文字不能更改大小、颜色、字体等，按钮不能隐藏等问题，在网上也查找了许多相关的资料，没有找到合适的解决方案，发现许多人也在寻求这个问题，最后我决定自己研究动手画一个标题栏出来，经过今天一天的研究与编写，终于完成全部功能，现公布一下我的设计思路。

一、去掉Form类自带的标题栏                         

要去掉自带的标题栏有两种方法，第一方法是直接将FormBorderStyle设为 System.Windows.Forms.FormBorderStyle.None，但设置过后，窗体无法改变大小，考虑到后期这些功能还是需要的，所以我采用了第二种方法，第二种方法是可以忽略FormBorderStyle，只需要将ControlBox设为 false，并将Text设为空即可，这种方法隐藏标题栏，若FormBorderStyle不是固定模式，则可以通过拉伸窗体边框改变大小的。

二、创建自定义窗体类                                     

首先创建一个窗体，如下图：

然后去掉Text默认的文字，并将ControlBox设为 false，此时标题栏将自动隐藏掉了，如下图：

去掉标题栏后，就需要重画新的标题栏，画标题栏很简单，方法也很多，我这里是采用一个Panel，将Dock设为Top，让其项部固定，并设高度为30像素，再在其中添加三个按钮，依次为：button1（关闭）,button2（最大化）,button3（最小化）,三个按钮的设为Size相同，且将Anchor都设为Top Right Bottom，这样就实现了让三个按钮在右边固定位置，如下图：

界面部份已经完工，剩下的就是编写代码了，由于代码较多，我先将代码贴出来，稍后再讲解。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace ZControls
{
    /// <summary>
    /// Copyright Zuowenjun
    /// Site Url:http://www.zuowenjun.cn
    /// QQ:77321032
    /// Description:自定义窗体样式，实现标题可自定义化
    /// </summary>
    public partial class ZForm : Form
    {
        private bool moving = false;
        private Point oldMousePosition;

        public new FormBorderStyle FormBorderStyle
        {
            get
            {
                return base.FormBorderStyle;
            }
            set
            {
                if (value != FormBorderStyle.Sizable && value != FormBorderStyle.SizableToolWindow)
                {
                    titlepanel.Controls.Remove(button2);
                }
                base.FormBorderStyle = value;
            }
        }

        #region 隐藏父类的属性，使其不可见

        [Browsable(false)]
        public new string Text
        {
            get
            {
                return titlelabel.Text;
            }
            set
            { }
        }

        [Browsable(false)]
        public new bool ControlBox
        {
            get {
                return false;
            }
            set
            {
                base.ControlBox = false;
            }
        }

        #endregion

        [Browsable(true)]
        [EditorBrowsable(EditorBrowsableState.Always)]
        [Description("窗体标题")]
        public string Title
        {
            get { return titlelabel.Text; }
            set { titlelabel.Text = value; }
        }

        [Browsable(true)]
        [EditorBrowsable(EditorBrowsableState.Always)]
        [Description("窗体标题字体样式")]
        public Font TitleFont
        {
            get
            {
                return titlelabel.Font;
            }
            set
            {
                titlelabel.Font = value;
            }
        }

        [Browsable(true)]
        [EditorBrowsable(EditorBrowsableState.Always)]
        [Description("窗体标题字体颜色")]
        public Color TitleColor
        {
            get
            {
                return titlelabel.ForeColor;
            }
            set
            {
                titlelabel.ForeColor = value;
            }
        }

        [Browsable(true)]
        [EditorBrowsable(EditorBrowsableState.Always)]
        [Description("窗体标题栏背景色")]
        public Color TitleBarBackColor
        {
            get
            {
                return titlepanel.BackColor;
            }
            set
            {
                titlepanel.BackColor = value;
            }
        }

        public new bool MaximizeBox
        {
            get
            {
                return titlepanel.Contains(button2);
            }
            set
            {
                if (!value)
                {
                    titlepanel.Controls.Remove(button2);
                }
                else if (!titlepanel.Contains(button2))
                {
                    titlepanel.Controls.Add(button2);
                }
            }
        }

        public new bool MinimizeBox
        {
            get
            {
                return titlepanel.Contains(button3);
            }
            set
            {
                if (!value)
                {
                    titlepanel.Controls.Remove(button3);
                }
                else if (!titlepanel.Contains(button3))
                {
                    titlepanel.Controls.Add(button3);
                }
            }
        }

        private void ResetTitlePanel()
        {
            base.ControlBox = false;
            base.Text = null;
            SetToolTip(button1, "关闭");
            button2.Size = button1.Size;
            SetToolTip(button2, "最大化或还原");
            button3.Size = button1.Size;
            SetToolTip(button3, "最小化");
        }

        private void SetToolTip(Control ctrl, string tip)
        {
            new ToolTip().SetToolTip(ctrl, tip);
        }
        public ZForm()
        {
            InitializeComponent();
            ResetTitlePanel();
        }

        private void Titlebutton_Click(object sender, EventArgs e)
        {
            Button btn = (Button)sender;
            switch (btn.Tag.ToString())
            {
                case "close":
                    {
                        this.Close();
                        break;
                    }
                case "max":
                    {
                        if (this.WindowState == FormWindowState.Maximized)
                        {
                            this.WindowState = FormWindowState.Normal;
                        }
                        else
                        {
                            this.WindowState = FormWindowState.Maximized;
                        }
                        break;
                    }
                case "min":
                    {
                        if (this.WindowState != FormWindowState.Minimized)
                        {
                            this.WindowState = FormWindowState.Minimized;
                        }
                        break;
                    }
            }
        }

        private void Titlepanel_MouseDown(object sender, MouseEventArgs e)
        {
            if (this.WindowState == FormWindowState.Maximized)
            {
                return;
            }
            //Titlepanel.Cursor = Cursors.NoMove2D;
            oldMousePosition = e.Location;
            moving = true;
        }

        private void Titlepanel_MouseUp(object sender, MouseEventArgs e)
        {
            //Titlepanel.Cursor = Cursors.Default;
            moving = false;
        }

        private void Titlepanel_MouseMove(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left && moving)
            {
                Point newPosition = new Point(e.Location.X - oldMousePosition.X, e.Location.Y - oldMousePosition.Y);
                this.Location += new Size(newPosition);
            }
        }

        private void Titlepanel_DoubleClick(object sender, EventArgs e)
        {
            if (titlepanel.Contains(button2))
            {
                button2.PerformClick();
            }
        }

        private void titlepanel_ControlRemoved(object sender, ControlEventArgs e)
        {
            switch (e.Control.Name)
            {
                case "button2":
                    {
                        if (titlepanel.Contains(button3))
                        {
                            button3.Left = button1.Left - button1.Width;
                        }
                        break;
                    }
            }
        }

        private void titlepanel_ControlAdded(object sender, ControlEventArgs e)
        {
            switch (e.Control.Name)
            {
                case "button2":
                    {
                        if (titlepanel.Contains(button3))
                        {
                            button3.Left = button2.Left - button2.Width;
                        }
                        break;
                    }
                case "button3":
                    {
                        if (titlepanel.Contains(button2))
                        {
                            button3.Left = button2.Left - button2.Width;
                        }
                        break;
                    }
            }
        }

    }
}

以下是系统自动生成的代码：

namespace ZControls
{
    partial class ZForm
    {
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows 窗体设计器生成的代码

        /// <summary>
        /// 设计器支持所需的方法 - 不要
        /// 使用代码编辑器修改此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.titlepanel = new System.Windows.Forms.Panel();
            this.titlelabel = new System.Windows.Forms.Label();
            this.button3 = new System.Windows.Forms.Button();
            this.button2 = new System.Windows.Forms.Button();
            this.button1 = new System.Windows.Forms.Button();
            this.titlepanel.SuspendLayout();
            this.SuspendLayout();
            //
            // titlepanel
            //
            this.titlepanel.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)()))), ((int)(((byte)()))), ((int)(((byte)()))));
            this.titlepanel.Controls.Add(this.titlelabel);
            this.titlepanel.Controls.Add(this.button3);
            this.titlepanel.Controls.Add(this.button2);
            this.titlepanel.Controls.Add(this.button1);
            this.titlepanel.Dock = System.Windows.Forms.DockStyle.Top;
            this.titlepanel.Location = new System.Drawing.Point(, );
            this.titlepanel.Margin = new System.Windows.Forms.Padding();
            this.titlepanel.Name = "titlepanel";
            this.titlepanel.Size = new System.Drawing.Size(, );
            this.titlepanel.TabIndex = ;
            this.titlepanel.ControlAdded += new System.Windows.Forms.ControlEventHandler(this.titlepanel_ControlAdded);
            this.titlepanel.ControlRemoved += new System.Windows.Forms.ControlEventHandler(this.titlepanel_ControlRemoved);
            this.titlepanel.DoubleClick += new System.EventHandler(this.Titlepanel_DoubleClick);
            this.titlepanel.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Titlepanel_MouseDown);
            this.titlepanel.MouseMove += new System.Windows.Forms.MouseEventHandler(this.Titlepanel_MouseMove);
            this.titlepanel.MouseUp += new System.Windows.Forms.MouseEventHandler(this.Titlepanel_MouseUp);
            //
            // titlelabel
            //
            this.titlelabel.AutoSize = true;
            this.titlelabel.Location = new System.Drawing.Point(, );
            this.titlelabel.Name = "titlelabel";
            this.titlelabel.Size = new System.Drawing.Size(, );
            this.titlelabel.TabIndex = ;
            //
            // button3
            //
            this.button3.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
            | System.Windows.Forms.AnchorStyles.Right)));
            this.button3.Font = new System.Drawing.Font("微软雅黑 Light", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)()));
            this.button3.Location = new System.Drawing.Point(, );
            this.button3.Name = "button3";
            this.button3.Size = new System.Drawing.Size(, );
            this.button3.TabIndex = ;
            this.button3.Tag = "min";
            this.button3.Text = "-";
            this.button3.UseVisualStyleBackColor = true;
            this.button3.Click += new System.EventHandler(this.Titlebutton_Click);
            //
            // button2
            //
            this.button2.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
            | System.Windows.Forms.AnchorStyles.Right)));
            this.button2.Font = new System.Drawing.Font("微软雅黑 Light", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)()));
            this.button2.Location = new System.Drawing.Point(, );
            this.button2.Name = "button2";
            this.button2.Size = new System.Drawing.Size(, );
            this.button2.TabIndex = ;
            this.button2.Tag = "max";
            this.button2.Text = "□";
            this.button2.UseVisualStyleBackColor = true;
            this.button2.Click += new System.EventHandler(this.Titlebutton_Click);
            //
            // button1
            //
            this.button1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
            | System.Windows.Forms.AnchorStyles.Right)));
            this.button1.Font = new System.Drawing.Font("微软雅黑 Light", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)()));
            this.button1.Location = new System.Drawing.Point(, );
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(, );
            this.button1.TabIndex = ;
            this.button1.Tag = "close";
            this.button1.Text = "X";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.Titlebutton_Click);
            //
            // ZForm
            //
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(, );
            this.ControlBox = false;
            this.Controls.Add(this.titlepanel);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
            this.MaximizeBox = false;
            this.Name = "ZForm";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.titlepanel.ResumeLayout(false);
            this.titlepanel.PerformLayout();
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.Panel titlepanel;
        private System.Windows.Forms.Button button3;
        private System.Windows.Forms.Button button2;
        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.Label titlelabel;
    }
}

代码中FormBorderStyle覆盖父类的同名属性，主要是实现根据不同的窗体，能够自动调整标题栏按钮，因为当FormBorderStyle为FormBorderStyle.Sizable或FormBorderStyle.SizableToolWindow时，才需要最大化按钮，否则都是不需要的。不需要的情况下，将移除最大化按钮对象button2,

titlepanel.Controls.Remove(button2);

由于隐藏自带的标题栏需要确保Text属性为空,ControlBox为False，所以我这里采取了重写这两个属性，并加上Browsable(false)，让其在编辑器中不可见。

Title，TitleFont，TitleColor,TitleBarBackColor为新增自定义属性，分别用于设置标题文字，标题文字样式，标题文字颜色，标题栏背景色。

重写MaximizeBox与MinimizeBox两个属性，使其根据设为True与False时，能相应的调整标题栏按钮。

私有方法：ResetTitlePanel，用于重设标题栏按钮属性。

方法Titlebutton_Click这个简单，主要用于实现标题栏上三个按钮点击时所要执行的操作。

Titlepanel_MouseDown，Titlepanel_MouseUp ，Titlepanel_MouseMove 三个方法是用于实现点击鼠标右键并按住移动就能够移动窗体，Titlepanel_DoubleClick方法是实现双击时能够最大化或还原窗体功能。

最后的titlepanel_ControlRemoved与titlepanel_ControlAdded，实现的功能是当增加或移除按钮时，调整按钮的位置。

三、使用自定义窗体类                                     

使用就比较简单了，先是新增一个窗体，然后将窗体类的父类由Form改为自定义窗体类（ZForm）即可，然后再切换到设计视图页面，是不是发现界面已经变化了呢，这时候就可以依据的想法灵活设置窗体标题栏样式，如下图：

    public partial class Form1 : ZControls.ZForm
    {
        public Form1()
        {
            InitializeComponent();
        }
    }

将MaximizeBox设为False时，运行的效果，是不是有点爽啊！

好了，都说完了，其实也很简单，我相信大部份高手都是不屑一看的，但此处只是作为一个学习与参考，可能大家有更好的方法，欢迎大家交流，共同进步。

最后我上传源码，仅大家参考与改进：

Demo

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