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c# 鼠标在控件上拖动 移动窗体 移动窗口

2024-07-04 12:58:00   226人阅读

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#region 移动窗体 移动窗口
private Point _mousePoint;
private int topA(Control cc)
{
    if (cc == null || cc == this) return 0;
    if (cc.Parent == null || cc.Parent == this)
        return cc.Top;
    else
        return topA(cc.Parent) + cc.Top;
}
private int leftA(Control cc)
{
    if (cc == null || cc == this) return 0;
    if (cc.Parent == null || cc.Parent == this)
        return cc.Left;
    else
        return leftA(cc.Parent) + cc.Left;
}
private void labTitle_MouseDown(object sender, MouseEventArgs e)
{
    Control cc = (Control)sender;
    if (e.Button == MouseButtons.Left)
    {
        _mousePoint.X = e.X + leftA(cc);
        _mousePoint.Y = e.Y + topA(cc);
    }
}
private void labTitle_MouseMove(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Left)
    {
        Top = MousePosition.Y - _mousePoint.Y;
        Left = MousePosition.X - _mousePoint.X;
    }
}
#endregion

　　


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