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C# 各种控件实现可拖动和调整大小

时间:2018-05-16 15:07:59      阅读:249      评论:0      收藏:0      [点我收藏+]

标签:draw   位置   边框   system   property   enum   button   .text   size   

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 // ‘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 >= -* 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 -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

    }

C# 各种控件实现可拖动和调整大小

标签:draw   位置   边框   system   property   enum   button   .text   size   

原文地址:https://www.cnblogs.com/LuoEast/p/9045572.html

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