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|ID||Category||Severity||Reproducibility||Date Submitted||Last Update|
|0003051||[JEDI VCL] 00 JVCL Components||major||always||2005-06-23 06:07||2005-08-09 08:45|
|Summary||0003051: Index out of bound on clicking on embty list box|
For any jvCustomListBox descendant, when setting DragMode to dmAutomatic and clicking on the list while embty, it produces the error "List out of bound List(0)".
I've traced the error and found that the cause of the problem that when embty, ListIndex still hold 0, while it should hold -1.
My fast solution is to change the DefaultStartDrag of TjvCustomListBox to be as following:
procedure TJvCustomListBox.DefaultStartDrag(var DragObject: TDragObject);
If Items.Count = 0 Then //Ahmed Fouad 23/06/05 3:15:38 PM Solve problem with embty list
ItemIndex := -1;
FDragIndex := ItemIndex;
if not IsProviderSelected and (FDragIndex >= 0) then
|Tags||No tags attached.|
JvListBox.pas [^] (64,094 bytes) 2005-06-23 06:07
TestJVClListBox.zzz [^] (274,017 bytes) 2005-06-26 02:19
I've just dropped a TJvListBox on an empty form, and I could not reproduce this problem.
Please create a sample application, zip up the sources, and attach it to the issue.
Sorry about that,
i forgot one detail, set MultiSelect to True
the scenario is , drop any jvListBox on a form, set DragMode to dmAutomatic and set MultiSelect to True.
run and just click on it, it will produce the error
Nope, not even with this.
I'm using Delphi 6 here, which version do you use?
The problem produces on Delphi 7, i've tested it on Delphi 5 and it doesn't show.
i've sent a file with the source and the executable, just rename the extension to .zip
Well, I've just tested with the Delphi 7 here, yes, ItemIndex is 0, but that's windows returning this, not us (see TCustomListBox.GetItemIndex)
Anyway, I just compiled your application, I don't have a single problem with the application. Sure, the exe you provided does display the problem, but I suspect an issue with your setup, something specific to your operating system and/or version of Delphi. Have you applied all the patches?
|Well, no answers in more than a month, this is considered fixed.|
|2005-06-23 06:07||laplace||New Issue|
|2005-06-23 06:07||laplace||File Added: JvListBox.pas|
|2005-06-23 11:08||obones||Note Added: 0007484|
|2005-06-23 11:08||obones||Status||new => feedback|
|2005-06-23 11:20||laplace||Note Added: 0007485|
|2005-06-23 12:29||obones||Note Added: 0007486|
|2005-06-26 02:19||anonymous||File Added: TestJVClListBox.zzz|
|2005-06-26 02:21||anonymous||Note Added: 0007491|
|2005-06-27 00:36||obones||Note Added: 0007496|
|2005-08-09 08:45||obones||Status||feedback => resolved|
|2005-08-09 08:45||obones||Resolution||open => fixed|
|2005-08-09 08:45||obones||Assigned To||=> obones|
|2005-08-09 08:45||obones||Note Added: 0007748|
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