View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0003575 | JEDI VCL | 00 JVCL Components | public | 2006-03-12 15:37 | 2006-04-05 14:59 |
| Reporter | Betalord | Assigned To | AHUser | ||
| Priority | normal | Severity | crash | Reproducibility | always |
| Status | resolved | Resolution | fixed | ||
| Product Version | 3.00 | ||||
| Target Version | Fixed in Version | 3.30 | |||
| Summary | 0003575: JvCheckListBox crashes when removing last item in the list, if this item is checked | ||||
| Description | JvCheckListBox crashes if you remove the last item in the list and if that item was checked. To reproduce it, put a component on the form and write OnUpKey event: procedure TForm1.JvCheckListBox1KeyUp(Sender: TObject; var Key: Word; Shift: TShiftState); begin if JvCheckListBox1.ItemIndex = -1 then Exit; if Key = VK_DELETE then JvCheckListBox1.Items.Delete(JvCheckListBox1.ItemIndex); end; Note that you have to click on the item to select it before deleting it, it is not enough if you click on the checked field and then hit delete, you have to first check it, then click on it (on the text, so that it gets selected although it is already selected when you checked it) and then hit delete. | ||||
| Tags | No tags attached. | ||||
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I cannot reproduce this with: 1. Start application 2. Click on the checkbox of the last item 3. Select a different item 4. Select the last item by clicking on the text 5. Pressing the DELETE key. 1. Start application 2. Click on all checkboxes (last to first) 3. Select the last item by clicking on the text 5. Pressing the DELETE key. |
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Sorry I guess I wasn't clear enough - when I said last item I didn't mean last item out of n items, but the only item left in the list - so you have a list with 1 item only, which is checked, and then you try to remove that item (so the list becomes empty). This is when it crashes. (Item must be checked and selected) |
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2006-03-14 03:22
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JvCheckListBox.zip (118,397 bytes) |
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I still can't reproduce this. I have attached a screen capture video that shows that your bug does not happen to me. (JCL and JVCL from CVS, BDS 2006) |
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2006-03-18 03:36
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BugMovieBetalord.zip (312,346 bytes) |
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I've just installed the 3.20 version in Delphi 7 and I can still reproduce it. I've made two small movies to show you exactly how to reproduce it (file 100%Reproducable.exe) and how little difference it takes to avoid rasing the exception (TakesLongTimeToReproduce.exe). In order to reproduce it, you have to do exactly as shown in the first movie, that is to click on the text label, then check it, then press DELETE key (in OnKeyUp event you should add the code I've pasted in the first bug description). |
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I confirm the issue. Delphi 7 and JVCL 3.20 100% reproductible. |
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Fixed in CVS. The captured LB_DELETESTRING invoked a refresh (=>CN_DRAWITEM) between the deletion of the Item-Wrapper and the string item. |
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Could you perhaps attach the fixed file to this issue? I cannot access sourceforge's cvs repository (timeouts). |
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2006-03-20 16:04
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JvCheckListBoxFixedSource.zip (4,072 bytes) |
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Attached. |
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How can we access to the latest version of files on the CVS ? The only copy i can find is more than 3 years old ! |
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http://homepages.borland.com/jedi/jvcl/cvs.htm The module is dev/jvcl3 |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2006-03-12 15:37 | Betalord | New Issue | |
| 2006-03-13 05:53 | AHUser | Note Added: 0008660 | |
| 2006-03-13 05:53 | AHUser | Status | new => feedback |
| 2006-03-13 10:15 | Betalord | Note Added: 0008661 | |
| 2006-03-14 03:22 | AHUser | File Added: JvCheckListBox.zip | |
| 2006-03-14 03:23 | AHUser | Note Added: 0008662 | |
| 2006-03-18 03:36 | Betalord | File Added: BugMovieBetalord.zip | |
| 2006-03-18 03:39 | Betalord | Note Added: 0008689 | |
| 2006-03-19 12:24 | Kyle_Katarn | Note Added: 0008693 | |
| 2006-03-20 04:24 | AHUser | Status | feedback => resolved |
| 2006-03-20 04:24 | AHUser | Resolution | open => fixed |
| 2006-03-20 04:24 | AHUser | Assigned To | => AHUser |
| 2006-03-20 04:24 | AHUser | Note Added: 0008699 | |
| 2006-03-20 11:07 | Betalord | Status | resolved => feedback |
| 2006-03-20 11:07 | Betalord | Resolution | fixed => reopened |
| 2006-03-20 11:07 | Betalord | Note Added: 0008706 | |
| 2006-03-20 16:04 | AHUser | File Added: JvCheckListBoxFixedSource.zip | |
| 2006-03-20 16:04 | AHUser | Note Added: 0008707 | |
| 2006-03-21 00:28 | Kyle_Katarn | Note Added: 0008708 | |
| 2006-03-21 11:40 | AHUser | Note Added: 0008711 | |
| 2006-04-05 14:59 | AHUser | Status | feedback => resolved |
| 2006-04-05 14:59 | AHUser | Resolution | reopened => fixed |
