C# WinForm 实现控件可拖拽

实现的功能：WinForm窗体中让控件可以随便拖动；类似于BS中弹出可拖动的层一样；

界面如图：



直接上代码：

namespace DropControlDemo
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private bool isMouseDown = false;
private Point mouseOffset; //记录鼠标指针的坐标

private void pan_Drop_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
mouseOffset.X = e.X;
mouseOffset.Y = e.Y;
isMouseDown = true;
}
}

private void pan_Drop_MouseMove(object sender, MouseEventArgs e)
{
if (isMouseDown)
{
int left = pan_Drop.Left + e.X - mouseOffset.X;
int top = pan_Drop.Top + e.Y - mouseOffset.Y;
pan_Drop.Location = new Point(left, top);
}
}

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

附件例子下载：猛击下载