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Normal Topic Moving ControlHost (Read 1641 times)
jmcnair@esc
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Moving ControlHost
Sep 25th, 2006 at 5:47pm
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Is there a way that a ControlHost can be moved by doing a click inside the ControlHost (rather than on the handle around it) and dragging to the desired location?

I've figured out a way to make the control inside the host respond to the click and move the ControlHost that contains it based on the MouseDown and MouseUp events.  So I can move it by clicking inside on the control, but this doesn't pull the ControlHost along to track the movement, it just makes it appear wherever you do your MouseUp.  Is there a way that I could accomplish this by tapping into the handle selection event, or by some other method?
  
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Stoyo
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Re: Moving ControlHost
Reply #1 - Sep 25th, 2006 at 6:24pm
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That's possible, as long as the control raises the MouseDown event and does not capture the mouse. Setup the flowchart and the host node like this:

Code
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fc.ModificationStart = ModificationStyle.AutoHandles;
fc.DefaultControlType = typeof(Button);

ControlHost ch = fc.CreateControlHost(0, 0, 50, 50);
ch.HandlesStyle = HandlesStyle.Custom;
ch.CtrlMouseAction = HostMouseAction.IgnoreControl;


and handle the hit-test event as follows:
Code
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private void fc_HitTestSelHandles(object sender, MindFusion.FlowChartX.HitTestEventArgs e)
{
  if (e.Item is ControlHost)
  {
    ControlHost ch = e.Item as ControlHost;
    if (ch.BoundingRect.Contains(e.MousePosition))
     e.HitResult = 8;// = move
  }
}


Flowchart.NET subscribes to the MouseDown event of the top-most window of a hosted control. So if yours is a composite control, you might wish to make the top-most window raise MouseDown even when a child control is clicked.

I hope that helps,
Stoyan
  
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jmcnair@esc
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Re: Moving ControlHost
Reply #2 - Sep 27th, 2006 at 11:45am
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Good work.  Thanks!
  
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