随心所欲移动Panel

　　C# Winform编程时,有时需要在程序执行时,使窗体中的panel控件可以随意的移动,这时可以采用下面这种方法:

　　主要包括以下两步:

@1:给panel(此处以 RealGLPanel为例说明)添加MouseDown和MouseMove事件处理函数,如此处对应为: RealGLPanel_MouseMove

　　　　和 RealGLPanel_MouseDown

　　@2:编写两个函数的实现代码(真的不长,不要怕)

　　具体的代码实现如下:

         private void RealGLPanel_MouseDown(object sender, MouseEventArgs e)
         {
             oldRealGLPLPt.X = this.RealGLPanel.Location.X;
             oldRealGLPLPt.Y = this.RealGLPanel.Location.Y;

             RealGLPLPt.X = Cursor.Position.X;
             RealGLPLPt.Y = Cursor.Position.Y;
             this.RealGLPanel.BringToFront();
         }

         private void RealGLPanel_MouseMove(object sender, MouseEventArgs e)
         {
             if (e.Button == MouseButtons.Left)
             {
                 int tx, ty;
                 tx = Cursor.Position.X - RealGLPLPt.X;
                 ty = Cursor.Position.Y - RealGLPLPt.Y;

                 if (tx !=  || ty != )
                 {
                     int tempx = oldRealGLPLPt.X + tx;
                     int tempy = oldRealGLPLPt.Y + ty;

                     //此处可以添加对tempx和tempy的限定的代码

                     this.RealGLPanel.Location = new System.Drawing.Point(tempx, tempy);
                 }
                 this.RealGLPanel.BringToFront();
             }
         }