C# 是否可以通过单击复合控件的一个子控件来移动它？

我试图实现的是通过拖放方法移动一组复合控件，如下图所示：

目前我只能通过复合控件的边缘来实现这一点。甚至可以单击复合控件中的子/子控件来移动整个复合控件吗

以下是我的代码，用于将控件添加到主窗体的

panel3

：

private void newPictureBox_Click(object sender, EventArgs e)
{
    UserControl1 _UserControl = new UserControl1();
    PictureBox _PictureBox = (PictureBox)sender;
    string _NewControlClusterName = "_New" + _PictureBox.Name;

    _UserControl.Name = _NewControlClusterName;
    _UserControl.ThreadCount = 16;
    _UserControl.ImageBackground = _PictureBox.BackColor;
    _UserControl.Dock = DockStyle.Top;
    _UserControl.AllowDrop = true;
    _UserControl.Cursor = Cursors.SizeAll;

    _UserControl.MouseMove += _UserControl_MouseMove;
    _UserControl.DragDrop += _UserControl_DragDrop;
    _UserControl.DragEnter += _UserControl_DragEnter;

    string ColorName = toolTip1.GetToolTip(_PictureBox);
    string ColorCode = toolTip2.GetToolTip(_PictureBox);
    toolTip1.SetToolTip(_UserControl.pictureBox1, ColorName);
    toolTip2.SetToolTip(_UserControl.pictureBox1, ColorCode);
    toolTip2.Active = false;

    _UserControl.PictureClick += new EventHandler(ClusterControl_Click);
    _UserControl.TrackBarScroll += new EventHandler(GetTartanCode);

    panel3.Controls.Add(_UserControl);
    panel3.Controls.SetChildIndex(_UserControl, 0);
}

private void _UserControl_DragEnter(object sender, DragEventArgs e)
{
    e.Effect = DragDropEffects.Move;
}

private void _UserControl_DragDrop(object sender, DragEventArgs e)
{
    UserControl1 target = sender as UserControl1;
    if (target != null)
    {
        int targetIndex = FindUserControlIndex(target);
        if (targetIndex != -1)
        {
            string _UserControlFormat = typeof(UserControl1).FullName;
            if (e.Data.GetDataPresent(_UserControlFormat))
            {
                UserControl1 source = e.Data.GetData(_UserControlFormat) as UserControl1;
                int sourceIndex = this.FindUserControlIndex(source);
                if (targetIndex != -1)
                    this.panel3.Controls.SetChildIndex(source, targetIndex);
            }
        }
    }
}

private int FindUserControlIndex(UserControl1 _UserControl)
{
    for (int i = 0; i < this.panel3.Controls.Count; i++)
    {
        UserControl1 target = this.panel3.Controls[i] as UserControl1;
        if (_UserControl == target)
            return i;
    }
    return -1;
}

private void _UserControl_MouseMove(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Left)
    {
        UserControl1 _UserControl1 = sender as UserControl1;
        _UserControl1.BorderStyle = BorderStyle.Fixed3D;
        _UserControl1.DoDragDrop(_UserControl1, DragDropEffects.All);
    }
}

private void ClusterControl_Click(object sender, EventArgs e)
{
    PictureBox _PictureBox = (PictureBox)sender;
    GroupBox _GroupBox = (GroupBox)_PictureBox.Parent;
    UserControl1 _UserControl1 = (UserControl1)_GroupBox.Parent;
    panel3.Controls.Remove(_UserControl1);
}

private void newPictureBox\u单击（对象发送方，事件参数e）
{
UserControl1_UserControl=newusercontrol1（）；
PictureBox\u PictureBox=（PictureBox）发送方；
字符串\u NewControlClusterName=“\u New”+\u PictureBox.Name；
_UserControl.Name=\u NewControlClusterName；
_UserControl.ThreadCount=16；
_UserControl.ImageBackground=\u PictureBox.BackColor；
_UserControl.Dock=DockStyle.Top；
_UserControl.AllowDrop=true；
_UserControl.Cursor=Cursors.SizeAll；
_UserControl.MouseMove+=\u UserControl\u MouseMove；
_UserControl.DragDrop+=\u UserControl\u DragDrop；
_UserControl.DragEnter+=\u UserControl\u DragEnter；
字符串ColorName=toolTip1.GetToolTip（_PictureBox）；
字符串ColorCode=toolTip2.GetToolTip（_PictureBox）；
toolTip1.SetToolTip（_UserControl.pictureBox1，ColorName）；
toolTip2.SetToolTip（_UserControl.pictureBox1，颜色代码）；
工具提示2.Active=false；
_UserControl.PictureClick+=新建事件处理程序（ClusterControl\u单击）；
_UserControl.TrackBarScroll+=新的事件处理程序（GetTartanCode）；
panel3.Controls.Add（_UserControl）；
panel3.Controls.SetChildIndex（_UserControl，0）；
}
私有void\u UserControl\u DragEnter（对象发送方，DragEventArgs e）
{
e、 效果=DragDropEffects.Move；
}
私有void\u UserControl\u DragDrop（对象发送方，DragEventArgs e）
{
UserControl1 target=发送方为UserControl1；
如果（目标！=null）
{
int targetIndex=FindUserControlIndex（目标）；
如果（targetIndex！=-1）
{
字符串_UserControlFormat=typeof（UserControl1）.FullName；
if（例如Data.GetDataPresent（_UserControlFormat））
{
UserControl1 source=e.Data.GetData（_UserControlFormat）作为UserControl1；
int sourceIndex=this.FindUserControlIndex（源）；
如果（targetIndex！=-1）
this.panel3.Controls.SetChildIndex（源，targetIndex）；
}
}
}
}
私有int FindUserControlIndex（UserControl1\u UserControl）
{
for（int i=0；i

没有简单的方法可以做到这一点

您可以尝试将事件处理程序递归地附加到每个子控件。
大概是这样的：

public class UserControl1 : Control
{
    public UserControl1()
    {
        // ...
        ApplyChildEvents(this);
    }

    private void ApplyChildEvents(Control control)
    {
        foreach (Control subcontrol in control.Controls)
        {
            subcontrol.MouseMove += _UserControl_MouseMove;
            subcontrol.DragDrop += _UserControl_DragDrop;
            subcontrol.DragEnter += _UserControl_DragEnter;

            ApplyChildEvents(subcontrol);
        }
    }
}

---

因此，您的

UserControl1

上的所有控件都将调用此方法。

使用了上面的答案以及对_UserControl\u MouseMove事件处理程序的以下代码调整，它现在可以完美地工作

private void _UserControl_MouseMove(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Left)
    {
        if (sender.GetType() == typeof(GroupBox))
        {
            GroupBox _GroupBox = sender as GroupBox;
            UserControl1 _UserControl1 = _GroupBox.Parent as UserControl1;
            _UserControl1.BorderStyle = BorderStyle.Fixed3D;
            _UserControl1.DoDragDrop(_UserControl1, DragDropEffects.All);
        }
        else
        {
            UserControl1 _UserControl1 = sender as UserControl1;
            _UserControl1.BorderStyle = BorderStyle.Fixed3D;
            _UserControl1.DoDragDrop(_UserControl1, DragDropEffects.All);
        }
    }
}

并且还必须将上述代码更改为以下代码（因为要跟踪的区域是动态生成的）：

newPictureBox\u单击

foreach (Control subcontrol in _UserControl.Controls)
{
    if (subcontrol.GetType() == typeof(GroupBox)){
        subcontrol.MouseMove += _UserControl_MouseMove;
        subcontrol.DragDrop += _UserControl_DragDrop;
        subcontrol.DragEnter += _UserControl_DragEnter;
    }
}

完整代码如下：

private void newPictureBox_Click(object sender, EventArgs e)
{
    UserControl1 _UserControl = new UserControl1();
    PictureBox _PictureBox = (PictureBox)sender;
    string _NewControlClusterName = "_New" + _PictureBox.Name;

    _UserControl.Name = _NewControlClusterName;
    _UserControl.ThreadCount = 16;
    _UserControl.ImageBackground = _PictureBox.BackColor;
    _UserControl.Dock = DockStyle.Top;
    _UserControl.AllowDrop = true;
    _UserControl.Cursor = Cursors.SizeAll;

    _UserControl.MouseMove += _UserControl_MouseMove;
    _UserControl.DragDrop += _UserControl_DragDrop;
    _UserControl.DragEnter += _UserControl_DragEnter;

    string ColorName = toolTip1.GetToolTip(_PictureBox);
    string ColorCode = toolTip2.GetToolTip(_PictureBox);
    toolTip1.SetToolTip(_UserControl.pictureBox1, ColorName);
    toolTip2.SetToolTip(_UserControl.pictureBox1, ColorCode);
    toolTip2.Active = false;

    _UserControl.PictureClick += new EventHandler(ClusterControl_Click);
    _UserControl.TrackBarScroll += new EventHandler(GetTartanCode);

    foreach (Control subcontrol in _UserControl.Controls)
    {
        if (subcontrol.GetType() == typeof(GroupBox)){
            subcontrol.MouseMove += _UserControl_MouseMove;
            subcontrol.DragDrop += _UserControl_DragDrop;
            subcontrol.DragEnter += _UserControl_DragEnter;
        }
    }

    panel3.Controls.Add(_UserControl);
    panel3.Controls.SetChildIndex(_UserControl, 0);
}

private void _UserControl_DragEnter(object sender, DragEventArgs e)
{
    e.Effect = DragDropEffects.All;
}

private void _UserControl_DragDrop(object sender, DragEventArgs e)
{
    UserControl1 target = sender as UserControl1;
    if (target != null)
    {
        int targetIndex = FindUserControlIndex(target);
        if (targetIndex != -1)
        {
            string _UserControlFormat = typeof(UserControl1).FullName;
            if (e.Data.GetDataPresent(_UserControlFormat))
            {
                UserControl1 source = e.Data.GetData(_UserControlFormat) as UserControl1;

                int sourceIndex = this.FindUserControlIndex(source);

                if (targetIndex != -1)
                    this.panel3.Controls.SetChildIndex(source, targetIndex);
            }
        }
    }
}

private int FindUserControlIndex(UserControl1 _UserControl)
{
    for (int i = 0; i < this.panel3.Controls.Count; i++)
    {
        UserControl1 target = this.panel3.Controls[i] as UserControl1;

        if (_UserControl == target)
            return i;
    }
    return -1;
}

private void _UserControl_MouseMove(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Left)
    {
        if (sender.GetType() == typeof(GroupBox))
        {
            GroupBox _GroupBox = sender as GroupBox;
            UserControl1 _UserControl1 = _GroupBox.Parent as UserControl1;
            _UserControl1.BorderStyle = BorderStyle.Fixed3D;
            _UserControl1.DoDragDrop(_UserControl1, DragDropEffects.All);
        }
        else
        {
            UserControl1 _UserControl1 = sender as UserControl1;
            _UserControl1.BorderStyle = BorderStyle.Fixed3D;
            _UserControl1.DoDragDrop(_UserControl1, DragDropEffects.All);
        }
    }
}

private void newPictureBox\u单击（对象发送方，事件参数e）
{
UserControl1_UserControl=newusercontrol1（）；
PictureBox\u PictureBox=（PictureBox）发送方；
字符串\u NewControlClusterName=“\u New”+\u PictureBox.Name；
_UserControl.Name=\u NewControlClusterName；
_UserControl.ThreadCount=16；
_UserControl.ImageBackground=\u PictureBox.BackColor；
_UserControl.Dock=DockStyle.Top；
_UserControl.AllowDrop=true；
_UserControl.Cursor=Cursors.SizeAll；
_UserControl.MouseMove+=\u UserControl\u MouseMove；
_UserControl.DragDrop+=\u UserControl\u DragDrop；
_UserControl.DragEnter+=\u UserControl\u DragEnter；
字符串ColorName=toolTip1.GetToolTip（_PictureBox）；
字符串ColorCode=toolTip2.GetToolTip（_PictureBox）；
toolTip1.SetToolTip（_UserControl.pictureBox1，ColorName）；
toolTip2.SetToolTip（_UserControl.pictureBox1，颜色代码）；
工具提示2.Active=false；
_UserControl.PictureClick+=新建事件处理程序（ClusterControl\u单击）；
_UserControl.TrackBarScroll+=新的事件处理程序（GetTartanCode）；
foreach（用户控件中的控件子控件）
{
if（subcontrol.GetType（）==typeof（GroupBox））{
subcontrol.MouseMove+=\u UserControl\u MouseMove；
subcontrol.DragDrop+=\u UserControl\u DragDrop；
subcontrol.DragEnter+=\u用户控制\u DragEnter；
}
}
panel3.Controls.Add（_UserControl）；
panel3.Controls.SetChildIndex（_UserControl，0）；
}
私有void\u UserControl\u DragEnter（对象发送方，DragEventArgs e）
{
e、 效果=DragDropEffects.All；
}
私有void\u UserControl\u DragDrop（对象发送方，DragEventArgs e）
{
UserControl1 target=发送方为UserControl1；
如果（目标！=null）
{
int targetIndex=FindUserControlIndex（目标）；
如果（targetIndex！=-1）
{
字符串_UserControlFormat=typeof（UserControl1）.FullName；
if（例如Data.GetDataPresent（_UserControlFormat））
{
UserControl1 source=e.Data.GetData（\u UserControlFor