Prevent DockTabControl Floating outside parent control

Prevent DockTabControl Floating outside parent control

Posted by: vinothkumar.r2210 on 20 May 2020, 9:26 pm EST

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  vinothkumar.r2210

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  Posted 20 May 2020, 9:26 pm EST - Updated 3 October 2022, 11:54 pm EST

  Hi,
  
  How to prevent docktabcontrol floating outside parent control. Please find the attached image.

  Also when floating completed and not docked then the docktabcontrol not returned to its original position.

  Thanks and Regards,
  
  Vinoth Kumar Ravi

  

  1323×1005 30.6 KB

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  Ruchir.Agarwal

  

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  Posted 22 May 2020, 7:10 am EST

  Hi Vinoth,

  I would suggest you to try using C1DragDropManager and handle its DragLeave event. Below is sample code snippet for same.```
  
  C1DragDropManager dd = new C1DragDropManager();
  
  foreach (UIElement e in _docktab1.Items)
  
  {
  
  dd.RegisterDragSource(e, DragDropEffect.Move, ModifierKeys.None);
  
  }
  
  foreach (UIElement e in dockControl.Items)
  
  {
  
  dd.RegisterDropTarget(e, true);
  
  }
  
  dd.RegisterDragSource(_docktab1, DragDropEffect.Move, ModifierKeys.None);
  
  dd.DragLeave += Dd_DragLeave;
  
  private void Dd_DragLeave(object source, DragDropEventArgs e)
  
  {
  
  var dragSource = e.DragSource as C1.WPF.Docking.C1DockTabControl;
  
  if(dragSource!=null)
  
  {
  
  var parent = dragSource.Parent as C1.WPF.Docking.C1DockControl;
  
  if (parent!=null)
  
  {
  
  if(parent.IsMouseCaptureWithin ==false && parent.IsMouseDirectlyOver == false )
  
  {
  
  e.Effect = DragDropEffect.None;
  
  }
  
  }
  
  }
  
  }

  Ruchir