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Bug Report T1284215
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Access Violation error sporadically occurs on an attempt to drag a row to the customization form

created 5 days ago (modified 4 days ago)

Steps to reproduce:

  1. Run the attached project.
  2. Press the Customize button.
  3. Rapidly drag a row to the form.

Current results:

An Access Violation error occurs in the TcxCustomInnerListBox.DragOver method because DragRow is nil. The Drag icon does not appear either.

Clipboard-File-1.png

Call Stack
cxVGrid.TcxVerticalGridItemsCustomizeListBox.DragOver($53897F0,28,17,dsDragEnter,True)
cxContainer.TcxCustomInnerListBox.DragOver($53897F0,27,16,dsDragEnter,True)
:0057fbdd TControl.DoDragMsg + $A9
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