C# 各种控件实现可拖动和调整大小
http://www.360doc.com/content/18/0516/12/55659281_754382494.shtml
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.Windows.Forms; namespace Toolcs
{
class DragComponent
{
#region 实现窗体内的控件拖动
//用法：在Form初始化或者Form_Load时先执行
//DragComponent a = new DragComponent();
//a.initProperty(groupBox1);
//将界面groupBox1上的所有控件都绑定MyMouseDown、MyMouseLeave、MyMouseMove事件。 private Control control;
const int Band = 5;
const int MinWidth = 10;
const int MinHeight = 10;
private EnumMousePointPosition m_MousePointPosition;
private Point p , p1; private enum EnumMousePointPosition
{ 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 } private void MyMouseDown ( object sender , System.Windows.Forms.MouseEventArgs e )
{ p.X = e.X; p.Y = e.Y; p1.X = e.X; p1.Y = e.Y; } private void MyMouseLeave ( object sender , System.EventArgs e )
{ m_MousePointPosition = EnumMousePointPosition.MouseSizeNone; control.Cursor = Cursors.Arrow; }
private EnumMousePointPosition MousePointPosition ( Size size , System.Windows.Forms.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;
} } private void MyMouseMove ( object sender , System.Windows.Forms.MouseEventArgs e )
{ Control lCtrl = (sender as Control); if (e.Button == MouseButtons.Left)
{ switch (m_MousePointPosition)
{ case EnumMousePointPosition.MouseDrag: lCtrl.Left = lCtrl.Left + e.X - p.X; lCtrl.Top = lCtrl.Top + e.Y - p.Y; break; 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; 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; 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; case EnumMousePointPosition.MouseSizeTop: lCtrl.Top = lCtrl.Top + (e.Y - p.Y); lCtrl.Height = lCtrl.Height - (e.Y - p.Y); break; case EnumMousePointPosition.MouseSizeLeft: lCtrl.Left = lCtrl.Left + e.X - p.X; lCtrl.Width = lCtrl.Width - (e.X - p.X); break; 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; 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; 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: control.Cursor = Cursors.Arrow; //'箭头 break; case EnumMousePointPosition.MouseDrag: control.Cursor = Cursors.SizeAll; //'四方向 break; case EnumMousePointPosition.MouseSizeBottom: control.Cursor = Cursors.SizeNS; //'南北 break; case EnumMousePointPosition.MouseSizeTop: control.Cursor = Cursors.SizeNS; //'南北 break; case EnumMousePointPosition.MouseSizeLeft: control.Cursor = Cursors.SizeWE; //'东西 break; case EnumMousePointPosition.MouseSizeRight: control.Cursor = Cursors.SizeWE; //'东西 break; case EnumMousePointPosition.MouseSizeBottomLeft: control.Cursor = Cursors.SizeNESW; //'东北到南西 break; case EnumMousePointPosition.MouseSizeBottomRight: control.Cursor = Cursors.SizeNWSE; //'东南到西北 break; case EnumMousePointPosition.MouseSizeTopLeft: control.Cursor = Cursors.SizeNWSE; //'东南到西北 break; case EnumMousePointPosition.MouseSizeTopRight: control.Cursor = Cursors.SizeNESW; //'东北到南西 break; default: break; } }
} public void initProperty (Control ctl)
{
control = ctl; for (int i = 0 ; i < control.Controls.Count ; i++)
{ control.Controls[i].MouseDown += new System.Windows.Forms.MouseEventHandler(MyMouseDown); control.Controls[i].MouseLeave += new System.EventHandler(MyMouseLeave); control.Controls[i].MouseMove += new System.Windows.Forms.MouseEventHandler(MyMouseMove);
}
} #endregion }
} 个人觉的这有问题独自修改
class DragComponent
{
#region 实现窗体内的控件拖动
//用法：在Form初始化或者Form_Load时先执行
//DragComponent a = new DragComponent();
//a.initProperty(groupBox1);
//将界面groupBox1上的所有控件都绑定MyMouseDown、MyMouseLeave、MyMouseMove事件。 private Control control;
const int Band = 5;
const int MinWidth = 10;
const int MinHeight = 10;
private EnumMousePointPosition m_MousePointPosition;
private Point p, p1; public enum EnumMousePointPosition
{ 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 } public void MyMouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{ p.X = e.X; p.Y = e.Y; p1.X = e.X; p1.Y = e.Y; } public void MyMouseLeave(object sender, System.EventArgs e)
{ m_MousePointPosition = EnumMousePointPosition.MouseSizeNone; control.Cursor = Cursors.Arrow; } public EnumMousePointPosition MousePointPosition(Size size, System.Windows.Forms.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;
} } public void MyMouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{ Control lCtrl = (sender as Control);
if (e.Button == MouseButtons.Left)
{ switch (m_MousePointPosition)
{ case EnumMousePointPosition.MouseDrag: lCtrl.Left = lCtrl.Left + e.X - p.X; lCtrl.Top = lCtrl.Top + e.Y - p.Y; break; 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; 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; 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; case EnumMousePointPosition.MouseSizeTop: lCtrl.Top = lCtrl.Top + (e.Y - p.Y); lCtrl.Height = lCtrl.Height - (e.Y - p.Y); break; case EnumMousePointPosition.MouseSizeLeft: lCtrl.Left = lCtrl.Left + e.X - p.X; lCtrl.Width = lCtrl.Width - (e.X - p.X); break; 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; 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; 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: control.Cursor = Cursors.Arrow; //'箭头 break; case EnumMousePointPosition.MouseDrag: control.Cursor = Cursors.SizeAll; //'四方向 break; case EnumMousePointPosition.MouseSizeBottom: control.Cursor = Cursors.SizeNS; //'南北 break; case EnumMousePointPosition.MouseSizeTop: control.Cursor = Cursors.SizeNS; //'南北 break; case EnumMousePointPosition.MouseSizeLeft: control.Cursor = Cursors.SizeWE; //'东西 break; case EnumMousePointPosition.MouseSizeRight: control.Cursor = Cursors.SizeWE; //'东西 break; case EnumMousePointPosition.MouseSizeBottomLeft: control.Cursor = Cursors.SizeNESW; //'东北到南西 break; case EnumMousePointPosition.MouseSizeBottomRight: control.Cursor = Cursors.SizeNWSE; //'东南到西北 break; case EnumMousePointPosition.MouseSizeTopLeft: control.Cursor = Cursors.SizeNWSE; //'东南到西北 break; case EnumMousePointPosition.MouseSizeTopRight: control.Cursor = Cursors.SizeNESW; //'东北到南西 break; default: break; } }
} public void initProperty(Control ctl)
{
control = ctl;
control.MouseDown += new System.Windows.Forms.MouseEventHandler(MyMouseDown);
control.MouseLeave += new System.EventHandler(MyMouseLeave);
control.MouseMove += new System.Windows.Forms.MouseEventHandler(MyMouseMove);
} #endregion }
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