C#自定义Winform无边框窗体

C#自定义Winform无边框窗体

　　在实际项目中，WinForm窗体或者控件不能满足要求，所以就需要自己设计窗体等，当然设计界面可以用的东西很多，例如WPF、或者一些第三方的库等。本例中将采用WinForm设计一个扁平美观的窗体。

上一篇中我们制作了一个button按钮控件，刚好本例可采用

需要的可以参考：C#自定义Button按钮控件

窗体效果：

接下来就是窗体的设计

1.添加一个窗体继承原来的窗体Form

 public partial class FormEX : Form

2.添加窗体属性

      /// <summary>
         /// 是否允许最大化
         /// </summary>
         private bool maxVisible = true;
         [Description("是否允许最大化")]
         public bool MaxVisible
         {
             get { return maxVisible; }
             set
             {
                 maxVisible = value;
                 if (!maxVisible)
                 {
                     this.btnEXMin.Location = new System.Drawing.Point(this.btnEXMax.Location.X, );
                     this.btnEXMax.Visible = false;
                 }
                 else
                 {
                     this.btnEXMin.Location = new System.Drawing.Point(this.btnEXMax.Location.X - , );
                     this.btnEXMax.Visible = true;
                 }
             }
         }

         /// <summary>
         /// 窗体标题
         /// </summary>
         private string titleText;
         [Description("窗体标题")]
         public string TitleText
         {
             get { return titleText; }
             set
             {
                 titleText = value;
                 title.Text = titleText;

             }
         }
         /// <summary>
         /// 窗体标题是否显示
         /// </summary>
         private bool titleVisible = true;
         [Description("窗体标题是否显示")]
         public bool TitleVisible
         {
             get { return titleVisible; }
             set
             {
                 titleVisible = value;
                 title.Visible = titleVisible;
             }
         }

         /// <summary>
         /// 窗口默认大小
         /// FormSize.NORMAL OR FormSize.MAX
         /// </summary>
         private FormSize defaultFormSize = FormSize.NORMAL;
         [Description("窗口默认大小")]
         public FormSize DefaultFormSize
         {
             get { return defaultFormSize; }
             set
             {
                 defaultFormSize = value;
                 if (defaultFormSize == FormSize.MAX)
                 {
                     //防止遮挡任务栏
                     this.MaximumSize = new Size(Screen.PrimaryScreen.WorkingArea.Width, Screen.PrimaryScreen.WorkingArea.Height);
                     this.WindowState = FormWindowState.Maximized;
                     //最大化图标切换
                     this.btnEXMax.ImageDefault = global::BenNHControl.Properties.Resources.MaxNormal;
                 }
             }
         }

3.窗体大小自由更改

         const int WM_NCHITTEST = 0x0084;
         const int HTLEFT = ;      //左边界
         const int HTRIGHT = ;     //右边界
         const int HTTOP = ;       //上边界
         const int HTTOPLEFT = ;   //左上角
         const int HTTOPRIGHT = ;  //右上角
         const int HTBOTTOM = ;    //下边界
         const int HTBOTTOMLEFT = 0x10;    //左下角
         const int HTBOTTOMRIGHT = ;     //右下角

  protected override void WndProc(ref Message m)
        {
            switch (m.Msg)
            {
                case WM_NCHITTEST:
                    base.WndProc(ref m);
                    Point vPoint = new Point((int)m.LParam & 0xFFFF,
                        (int)m.LParam >>  & 0xFFFF);
                    vPoint = PointToClient(vPoint);
                    if (vPoint.X <= )
                        if (vPoint.Y <= )
                            m.Result = (IntPtr)HTTOPLEFT;
                        else if (vPoint.Y >= ClientSize.Height - )
                            m.Result = (IntPtr)HTBOTTOMLEFT;
                        else m.Result = (IntPtr)HTLEFT;
                    else if (vPoint.X >= ClientSize.Width - )
                        if (vPoint.Y <= )
                            m.Result = (IntPtr)HTTOPRIGHT;
                        else if (vPoint.Y >= ClientSize.Height - )
                            m.Result = (IntPtr)HTBOTTOMRIGHT;
                        else m.Result = (IntPtr)HTRIGHT;
                    else if (vPoint.Y <= )
                        m.Result = (IntPtr)HTTOP;
                    else if (vPoint.Y >= ClientSize.Height - )
                        m.Result = (IntPtr)HTBOTTOM;
                    break;
                default:
                    base.WndProc(ref m);
                    break;
            }
        }

4.窗体按钮等事件添加

  /// <summary>
         /// 最小化按钮事件
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void btnEXMin_ButtonClick(object sender, EventArgs e)
         {
             this.WindowState = FormWindowState.Minimized;
         }

         /// <summary>
         /// 最大化按钮事件
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void btnEXMax_ButtonClick(object sender, EventArgs e)
         {
             this.MaxNormalSwitch();
         }

         /// <summary>
         /// 关闭按钮事件
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void btnEXClose_ButtonClick(object sender, EventArgs e)
         {
             this.Close();
         }

         /// <summary>
         /// 鼠标按下标题栏
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void titleBar_MouseDown(object sender, MouseEventArgs e)
         {
             mPoint = new Point(e.X, e.Y);
         }

         /// <summary>
         /// 鼠标在移动
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void titleBar_MouseMove(object sender, MouseEventArgs e)
         {
             if (e.Button == MouseButtons.Left)
             {
                 this.Location = new Point(this.Location.X + e.X - mPoint.X, this.Location.Y + e.Y - mPoint.Y);
             }
         }

         private void titleBar_DoubleClick(object sender, EventArgs e)
         {
             this.MaxNormalSwitch();
         }

         /// <summary>
         /// 最大化和正常状态切换
         /// </summary>
         private void MaxNormalSwitch()
         {
             if (this.WindowState == FormWindowState.Maximized)//如果当前状态是最大化状态 则窗体需要恢复默认大小
             {
                 this.WindowState = FormWindowState.Normal;
                 //
                 this.btnEXMax.ImageDefault = global::BenNHControl.Properties.Resources.Max;
             }
             else
             {
                 //防止遮挡任务栏
                 this.MaximumSize = new Size(Screen.PrimaryScreen.WorkingArea.Width, Screen.PrimaryScreen.WorkingArea.Height);
                 this.WindowState = FormWindowState.Maximized;
                 //最大化图标切换
                 this.btnEXMax.ImageDefault = global::BenNHControl.Properties.Resources.MaxNormal;
             }
             this.Invalidate();//使重绘
         }

         private void FormEX_Resize(object sender, EventArgs e)
         {
             this.Invalidate();//使重绘
         }

窗体效果展示

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