介绍 using 系统;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using 来;
using 包含;
using System.Windows.Forms;
namespace WinFormDrag
{
public 才能;partial class Form1 :形式
{才能
,,,//鼠标按下坐标(控制控件的相对坐标)
,,,Point mouseDownPoint =, Point.Empty;
,,,//显示拖动效果的矩形
,,,Rectangle rect =, Rectangle.Empty;
,,,//是否正在拖拽
,,,bool isDrag =,假;
,,,public Form1 ()
,,,{
,,,,,InitializeComponent ();
,,,}
,,,private void Form1_Paint (object ,发送方,PaintEventArgs e)
,,,{
,,,,,if (rect !=, Rectangle.Empty)
,,,,,{
,,,,,,,if (isDrag)
,,,,,,,{//画一个和控制一样大小的黑框
,,,,,,,,,e.Graphics.DrawRectangle (Pens.Black,矩形);
,,,,,,,}
,,,,,,,
,,,,,,,{
,,,,,,,,,e.Graphics.DrawRectangle (new 笔(this.BackColor),矩形);
,,,,,,,}
,,,,,}
,,,}
,,,///,& lt; summary>
,,,///,按下鼠标时
,,,///,& lt;/summary>
,,,///,& lt; param name=皊ender"祝辞& lt;/param>
,,,///,& lt; param name=癳"祝辞& lt;/param>
,,,private void pb1_MouseDown (object ,发送方,MouseEventArgs e)
,,,{
,,,,,if (e.Button ==, MouseButtons.Left)
,,,,,{
,,,,,,,mouseDownPoint =, e.Location;
,,,,,,,//记录控件的大小
,,,,,,,rect =, pb1.Bounds;
,,,,,}
,,,}
,,,///,& lt; summary>
,,,///,移过时
,,,///,& lt;/summary>
,,,///,& lt; param name=皊ender"祝辞& lt;/param>
,,,///,& lt; param name=癳"祝辞& lt;/param>
,,,private void pb1_MouseMove (object ,发送方,MouseEventArgs e)
,,,{
,,,,,if (e.Button ==, MouseButtons.Left)
,,,,,{
,,,,,,,isDrag =,真的;
,,,,,,,//重新设置矩形的位置,跟随鼠标移动
,,,,,,,rect.Location =, getPointToForm (new 点(e.Location.X 安康;mouseDownPoint.X, e.Location.Y 作用;mouseDownPoint.Y));
,,,,,,,this.Refresh ();
,,,,,}
,,,}
,,,///,& lt; summary>
,,,///,释放鼠标按钮时
,,,///,& lt;/summary>
,,,///,& lt; param name=皊ender"祝辞& lt;/param>
,,,///,& lt; param name=癳"祝辞& lt;/param>
,,,private void pb1_MouseUp (object ,发送方,MouseEventArgs e)
,,,{
,,,,,if (e.Button ==, MouseButtons.Left)
,,,,,{
,,,,,,,if (isDrag)
,,,,,,,{
,,,,,,,,,isDrag =,假;
,,,,,,,,,//移动控制到放开鼠标的地方
,,,,,,,,,pb1.Location =, rect.Location;
,,,,,,,,,this.Refresh ();
,,,,,,,}
,,,,,,,重置();
,,,,,}
,,,}
,,,//重置变量
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这篇文章将为大家详细讲解有关怎么在c#中利用WinForm上实现窗体上控件自由拖动功能,文章内容质量较高,因此小编分享给大家做个参考,希望大家阅读完这篇文章后对相关知识有一定的了解。
具体如下:
首先在窗体上放一个PictrueBox控件,命名为pb1,拖动完整代码如下:
