拖动多个选定的控件

本文关键字：控件 拖动 | 更新日期: 2023-09-27 18:11:32

我有一个WinForms Form和UserControl，其中多个实例可以动态创建。如果我选择它，我可以拖动它。现在，我想，如果我选择多个UserControls(用ctrl +按钮点击)，能够同时拖动所有的。

我能像对一个UserControl那样做吗?

我已经尝试过了:

// For dragging I use this method and also I have
// overridden  MouseUp,MouseDown,MouseMove from .net
public void StartDrag()  
{
    dragging = true;
    Point p = PointToClient(Cursor.Position);
    dragStart = new Point(Math.Max(0, p.X), Math.Max(0, p.Y));
    buttondrag.Capture = true;
}
private void Usercontrol1_SelectedChanged(object sender, EventArgs e)
{
    if (((UserControl)sender).Selected)
    {
        if (SelectedUserControl.Count > 1)
        {
            foreach (UserControl c in panel1.Controls)
            {
                c.StartDrag();
            }
        }
    }
}

拖动多个选定的控件

//把你的控件放到面板中，并使用这个类。

  class ControlMover
{
    public enum Direction
    {
        Any,
        Horizontal,
        Vertical
    }
    public static void Init(Control control)
    {
        Init(control, Direction.Any);
    }
    public static void Init(Control control, Direction direction)
    {
        Init(control, control, direction);
    }
    public static void Init(Control control, Control container, Direction direction)
    {
        bool Dragging = false;
        Point DragStart = Point.Empty;
        control.MouseDown += delegate(object sender, MouseEventArgs e)
        {
            Dragging = true;
            DragStart = new Point(e.X, e.Y);
            control.Capture = true;
        };
        control.MouseUp += delegate(object sender, MouseEventArgs e)
        {
            Dragging = false;
            control.Capture = false;
        };
        control.MouseMove += delegate(object sender, MouseEventArgs e)
        {
            if (Dragging)
            {
                if (direction != Direction.Vertical)
                    container.Left = Math.Max(0, e.X + container.Left - DragStart.X);
                if (direction != Direction.Horizontal)
                    container.Top = Math.Max(0, e.Y + container.Top - DragStart.Y);
            }
        };
    }
}

    public Form1()
    {
        InitializeComponent();
        ControlMover.Init(this.panel1);
        ControlMover.Init(this.panel1, ControlMover.Direction.Vertical);
    }

如果您希望程序在按下ctrl +键时激活，那么您需要查看键挂钩，然后在按下键事件中设置一些代码，告诉程序选择所有项。这是相当先进的，很难做到，如果你的新键挂钩，但这里有一个键挂钩的链接。好运！

http://www.codeproject.com/Articles/19004/A-Simple-C-Global-Low-Level-Keyboard-Hook

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