[Mono-bugs] [Bug 82404][Nor] New - TreeView Drag/Drop problems and differences from MS

bugzilla-daemon at bugzilla.ximian.com bugzilla-daemon at bugzilla.ximian.com
Fri Aug 10 16:24:13 EDT 2007

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Changed by danm at inin.com.


--- shadow/82404	2007-08-10 16:24:13.000000000 -0400
+++ shadow/82404.tmp.1788	2007-08-10 16:24:13.000000000 -0400
@@ -0,0 +1,54 @@
+Bug#: 82404
+Product: Mono: Class Libraries
+Version: 1.2
+OS: RHEL 2.1
+OS Details: RHEL WS
+Status: NEW   
+Priority: Normal
+Component: Windows.Forms
+AssignedTo: toshok at ximian.com                            
+ReportedBy: danm at inin.com               
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+Summary: TreeView Drag/Drop problems and differences from MS
+Please fill in this template when reporting a bug, unless you know what 
+you are doing.
+Description of Problem:
+My app uses Drag/Drop and there are two problems.  I'm using Drag/Drop in 
+a TreeView
+First, I notice that when I click on a treeview node on mono 
+the "ItemDrag" is invoked.  This behavior is different from MS - when 
+running on MS that function is not invoked until the mouse cursor is 
+actually dragged outside the minimum number of drag pixels.
+Second, my implementation of ItemDrag is only one line.       
+      Control.DoDragDrop(e.Item, DragDropEffects.Move);
+and this causes my app to signal a Segmentation Fault.
+Steps to reproduce the problem:
+1. Add a TreeView to a Form and put some items in it.  At startup, set 
+the TreeView.AllowDrop = true
+2. Add a TreeView.ItemDrag handler and make the implementation one line:  
+myTreeView.DoDragDrop(e.Item, DragDropEffects.Move);
+3. compile and run the app and click on one of the items in the tree view.
+Actual Results:
+1. Clicking an item triggers the ItemDrag event.  It shouldn't, that 
+event should not fire until the item is actually dragged.
+2. Furthermore, when that event does run calling the DoDragDrop causes 
+the app to seg fault on linux.
+How often does this happen? 
+every time
+Additional Information:
+I'm using the latest SVN source as of 08/10/2007 and Red Hat Enterprise 

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