C# 毕业证书打印《五》

对鼠标操作Label的方法

  #region
         //定义一个枚举类型，描述光标状态
         private enum EnumMousePointPosition
         {
             #region
             MouseSizeNone = , //'无
             MouseSizeRight = , //'拉伸右边框
             MouseSizeLeft = , //'拉伸左边框
             MouseSizeBottom = , //'拉伸下边框
             MouseSizeTop = , //'拉伸上边框
             MouseSizeTopLeft = , //'拉伸左上角
             MouseSizeTopRight = , //'拉伸右上角
             MouseSizeBottomLeft = , //'拉伸左下角
             MouseSizeBottomRight = , //'拉伸右下角
             MouseDrag =  // '鼠标拖动
             #endregion
         }
         //定义自己的MyMouseDown事件
         private void MyMouseDown(object sender, MouseEventArgs e)
         {
             p.X = e.X;
             p.Y = e.Y;
             p1.X = e.X;
             p1.Y = e.Y;
         }
         //定义自己的MyMouseLeave事件
         private void MyMouseLeave(object sender, EventArgs e)
         {
             m_MousePointPosition = EnumMousePointPosition.MouseSizeNone;
             this.Cursor = Cursors.Arrow;
         }
         //设计一个函数，确定光标在不同位置的样式
         private EnumMousePointPosition MousePointPosition(Size size, MouseEventArgs e)
         {
             if ((e.X >= - * Band) | (e.X <= size.Width) | (e.Y >= - * Band) | (e.Y <= size.Height))
             {
                 if (e.X < Band)
                 {
                     if (e.Y < Band) { return EnumMousePointPosition.MouseSizeTopLeft; }
                     else
                     {
                         if (e.Y > - * Band + size.Height)
                         { return EnumMousePointPosition.MouseSizeBottomLeft; }
                         else
                         { return EnumMousePointPosition.MouseSizeLeft; }
                     }
                 }
                 else
                 {
                     if (e.X > - * Band + size.Width)
                     {
                         if (e.Y < Band)
                         { return EnumMousePointPosition.MouseSizeTopRight; }
                         else
                         {
                             if (e.Y > - * Band + size.Height)
                             { return EnumMousePointPosition.MouseSizeBottomRight; }
                             else
                             { return EnumMousePointPosition.MouseSizeRight; }
                         }
                     }
                     else
                     {
                         if (e.Y < Band)
                         { return EnumMousePointPosition.MouseSizeTop; }
                         else
                         {
                             if (e.Y > - * Band + size.Height)
                             { return EnumMousePointPosition.MouseSizeBottom; }
                             else
                             { return EnumMousePointPosition.MouseDrag; }
                         }
                     }
                 }
             }
             else
             { return EnumMousePointPosition.MouseSizeNone; }
         }

         //定义自己的MyMouseMove事件，并使用上面定义的函数
         private void MyMouseMove(object sender, MouseEventArgs e)
         {
             Control lCtrl = (sender as Control);
             if (e.Button == MouseButtons.Left)
             {
                 switch (m_MousePointPosition)
                 {
                     //鼠标拖动
                     case EnumMousePointPosition.MouseDrag:
                         lCtrl.Left = lCtrl.Left + e.X - p.X;
                         lCtrl.Top = lCtrl.Top + e.Y - p.Y;
                         break;
                     //拉伸下边框
                     case EnumMousePointPosition.MouseSizeBottom:
                         lCtrl.Height = lCtrl.Height + e.Y - p1.Y;
                         p1.X = e.X;
                         p1.Y = e.Y; //'记录光标拖动的当前点
                         break;
                     //拉伸左下角
                     case EnumMousePointPosition.MouseSizeBottomRight:
                         lCtrl.Width = lCtrl.Width + e.X - p1.X;
                         lCtrl.Height = lCtrl.Height + e.Y - p1.Y;
                         p1.X = e.X;
                         p1.Y = e.Y; //'记录光标拖动的当前点
                         break;
                     //拉伸又边框
                     case EnumMousePointPosition.MouseSizeRight:
                         lCtrl.Width = lCtrl.Width + e.X - p1.X;
                         //   lCtrl.Height = lCtrl.Height + e.Y - p1.Y;
                         p1.X = e.X;
                         p1.Y = e.Y; //'记录光标拖动的当前点
                         break;
                     //拉伸上边框
                     case EnumMousePointPosition.MouseSizeTop:
                         lCtrl.Top = lCtrl.Top + (e.Y - p.Y);
                         lCtrl.Height = lCtrl.Height - (e.Y - p.Y);
                         break;
                     //拉伸左边框
                     case EnumMousePointPosition.MouseSizeLeft:
                         lCtrl.Left = lCtrl.Left + e.X - p.X;
                         lCtrl.Width = lCtrl.Width - (e.X - p.X);
                         break;
                     //拉伸左下角
                     case EnumMousePointPosition.MouseSizeBottomLeft:
                         lCtrl.Left = lCtrl.Left + e.X - p.X;
                         lCtrl.Width = lCtrl.Width - (e.X - p.X);
                         lCtrl.Height = lCtrl.Height + e.Y - p1.Y;
                         p1.X = e.X;
                         p1.Y = e.Y; //'记录光标拖动的当前点
                         break;
                     //拉伸右上角
                     case EnumMousePointPosition.MouseSizeTopRight:
                         lCtrl.Top = lCtrl.Top + (e.Y - p.Y);
                         lCtrl.Width = lCtrl.Width + (e.X - p1.X);
                         lCtrl.Height = lCtrl.Height - (e.Y - p.Y);
                         p1.X = e.X;
                         p1.Y = e.Y; //'记录光标拖动的当前点
                         break;
                     //拉伸左上角
                     case EnumMousePointPosition.MouseSizeTopLeft:
                         lCtrl.Left = lCtrl.Left + e.X - p.X;
                         lCtrl.Top = lCtrl.Top + (e.Y - p.Y);
                         lCtrl.Width = lCtrl.Width - (e.X - p.X);
                         lCtrl.Height = lCtrl.Height - (e.Y - p.Y);
                         break;

                     default:
                         break;
                 }
                 if (lCtrl.Width < MinWidth) lCtrl.Width = MinWidth;
                 if (lCtrl.Height < MinHeight) lCtrl.Height = MinHeight;
             }

             else
             {
                 m_MousePointPosition = MousePointPosition(lCtrl.Size, e); //'判断光标的位置状态
                 switch (m_MousePointPosition) //'改变光标
                 {
                     case EnumMousePointPosition.MouseSizeNone:
                         this.Cursor = Cursors.Arrow;       //'箭头
                         break;

                     case EnumMousePointPosition.MouseDrag:
                         this.Cursor = Cursors.SizeAll;     //'四方向
                         break;

                     case EnumMousePointPosition.MouseSizeBottom:
                         this.Cursor = Cursors.SizeNS;      //'南北
                         break;

                     case EnumMousePointPosition.MouseSizeTop:
                         this.Cursor = Cursors.SizeNS;      //'南北
                         break;

                     case EnumMousePointPosition.MouseSizeLeft:
                         this.Cursor = Cursors.SizeWE;      //'东西
                         break;

                     case EnumMousePointPosition.MouseSizeRight:
                         this.Cursor = Cursors.SizeWE;      //'东西
                         break;

                     case EnumMousePointPosition.MouseSizeBottomLeft:
                         this.Cursor = Cursors.SizeNESW;    //'东北到南西
                         break;

                     case EnumMousePointPosition.MouseSizeBottomRight:
                         this.Cursor = Cursors.SizeNWSE;    //'东南到西北
                         break;

                     case EnumMousePointPosition.MouseSizeTopLeft:
                         this.Cursor = Cursors.SizeNWSE;    //'东南到西北
                         break;

                     case EnumMousePointPosition.MouseSizeTopRight:
                         this.Cursor = Cursors.SizeNESW;    //'东北到南西
                         break;

                     default:
                         break;

                 }
             }
         }
         #endregion  定义鼠标事件
         //将界面panel1上的所有控件都绑定MyMouseDown、MyMouseLeave、MyMouseMove事件，记得在Form初始化或者Form_Load时先执行它
         private void initProperty()
         {
             for (int i = ; i < this.panel1.Controls.Count; i++)
             {
                 this.panel1.Controls[i].MouseDown += new System.Windows.Forms.MouseEventHandler(MyMouseDown);
                 this.panel1.Controls[i].MouseLeave += new System.EventHandler(MyMouseLeave);
                 this.panel1.Controls[i].MouseMove += new System.Windows.Forms.MouseEventHandler(MyMouseMove);
             }
         }