C# 毕业证书打印《五》
2013-06-26 21:37
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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 = 0, //'无 MouseSizeRight = 1, //'拉伸右边框 MouseSizeLeft = 2, //'拉伸左边框 MouseSizeBottom = 3, //'拉伸下边框 MouseSizeTop = 4, //'拉伸上边框 MouseSizeTopLeft = 5, //'拉伸左上角 MouseSizeTopRight = 6, //'拉伸右上角 MouseSizeBottomLeft = 7, //'拉伸左下角 MouseSizeBottomRight = 8, //'拉伸右下角 MouseDrag = 9 // '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 >= -1 * Band) | (e.X <= size.Width) | (e.Y >= -1 * Band) | (e.Y <= size.Height)) { if (e.X < Band) { if (e.Y < Band) { return EnumMousePointPosition.MouseSizeTopLeft; } else { if (e.Y > -1 * Band + size.Height) { return EnumMousePointPosition.MouseSizeBottomLeft; } else { return EnumMousePointPosition.MouseSizeLeft; } } } else { if (e.X > -1 * Band + size.Width) { if (e.Y < Band) { return EnumMousePointPosition.MouseSizeTopRight; } else { if (e.Y > -1 * Band + size.Height) { return EnumMousePointPosition.MouseSizeBottomRight; } else { return EnumMousePointPosition.MouseSizeRight; } } } else { if (e.Y < Band) { return EnumMousePointPosition.MouseSizeTop; } else { if (e.Y > -1 * 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 = 0; 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); } }
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