C# 拖动鼠标移动窗体背景图片窗体通用类FormDragDrop

作者:C/S框架网|www.csframewo 发布日期:2022/01/14 16:10:55

C# 拖动鼠标移动窗体背景图片窗体通用类FormDragDrop

FormDragDrop类

C# Code:

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace CSFramework.Library.CommonClass
{
/// <summary>
/// 拖动鼠标移动窗体Form通用类
/// </summary>
public class FormDragDrop
{
private Point _MouseOffset;
private bool _IsMouseDown = false;
private Form _form;

private FormDragDrop(Form form)
{
_form = form;
}

/// <summary>
/// 使用方法
/// </summary>
/// <param name="form"></param>
public static void Handle(Form form)
{
FormDragDrop F = new FormDragDrop(form);
F.HandleEvents();
}

private void HandleEvents()
{
_form.MouseDown += On_MouseDown;
_form.MouseMove += On_MouseMove;
_form.MouseUp += On_MouseUp;
}

private void On_MouseDown(object sender, MouseEventArgs e)
{
int xOffset;
int yOffset;

if (e.Button == MouseButtons.Left)
{
xOffset = -e.X;
yOffset = -e.Y;
_MouseOffset = new Point(xOffset, yOffset);
_IsMouseDown = true;
}
}

private void On_MouseMove(object sender, MouseEventArgs e)
{
if (_IsMouseDown)
{
Point mousePos = Control.MousePosition;
mousePos.Offset(_MouseOffset.X, _MouseOffset.Y);
_form.Location = mousePos;
}
}

private void On_MouseUp(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
_IsMouseDown = false;
}
}

}
}

//来源:C/S框架网 | www.csframework.com | QQ:23404761

使用方法：

在Form的构造器添加一行代码：

C# Code:

/// <summary>
/// 私有构造器
/// </summary>
private frmLogin()
{
InitializeComponent();

//拖拽窗体通用类
FormDragDrop.Handle(this);
}

//来源:C/S框架网 | www.csframework.com | QQ:23404761

界面效果，可以拖拽

参考文档：

C#拖动鼠标移动Form窗体，移动Panel面板通用类（FormDragDrop）|C/S开发框架
C# 按住鼠标左键移动窗体Form的位置,C#拖动窗体通用类