[Mono-bugs] [Bug 445384] New: After DoDragDrop wrong data format in DragEventArgs. Data on DragOver event

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=445384


           Summary: After DoDragDrop wrong data format in DragEventArgs.Data
                    on DragOver event
           Product: Mono: Class Libraries
           Version: 2.0
          Platform: Other
        OS/Version: Windows Vista
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Windows.Forms
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: apper at apper.de
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---


Created an attachment (id=252439)
 --> (https://bugzilla.novell.com/attachment.cgi?id=252439)
Test Case

Imagine the following situation:

You're starting drag&drop by using:
this.DoDragDrop(someObject, DragDropEffects.Copy | DragDropEffects.Move);

Now you're waiting for the DragOver event (in this case on the same control,
but I think this doesn't matter). The DragOver event occurs correctly and you
got the DragEventArgs. Interesting is the Data property, which should contain
the "someObject" object given to the DoDragDrop method. This doesn't work in
Mono using Windows.

e.Data.GetFormats() gets e.g. "Object1" when using MS.NET, using Mono it is
always "FileDrop". The e.Data.GetDataPresent("Object1") doesn't work, too. So
you don't have a possibility to check, if the dragged object is of the correct
type.

A simple sample could be found in the attached test case:

Do the dragDrop (in Form1_MouseDown):
this.DoDragDrop("", DragDropEffects.Copy);

checking the format (in Form1_DragOver):
MessageBox.Show(e.Data.GetFormats()[0]);


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