View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0004032 | JEDI VCL | 00 JVCL Components | public | 2007-01-05 02:42 | 2007-06-19 06:21 |
| Reporter | ivan_ra | Assigned To | obones | ||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | resolved | Resolution | fixed | ||
| Product Version | Daily / GIT | ||||
| Target Version | Fixed in Version | 3.34 | |||
| Summary | 0004032: Bug in TJvForm | ||||
| Description | when TJvForm has parent, it can be shown on another form: Let Form1 is main application form and Form2 is target form. This is code demonstrating bug: procedure TForm1.Button1Click(Sender: TObject); begin with TJvForm.Create(Application) do try Parent:=Form2; SetBounds(0,50,100,100); Color:=Random($FFFFFF); visible:=true; except Free; end; end; New TJvForm has Parent:=Form2 but shown on Form1 (look at JvForm.zip) | ||||
| Additional Information | Suggestion: The cause of bug is procedure TJvForm.CMShowingChanged from JvComponent unit. It fixes some "Window Ghosting "bug"", but introduces own bug | ||||
| Tags | No tags attached. | ||||
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2007-01-05 02:42
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JvForm.zip (2,191 bytes) |
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The code for the window ghosting must stay. It must be adjusted to cope with this, considering that setting a parent to a form is not something very commonly encountered by the majority of users. |
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I not understand, for what cases the window ghosting code is necessary, but probably we need to check Form.Parent property before run it? I have got this bug in project where I use TJvInterpreterFm to customize part of my form in runtime. Now I use SetWindowLong command to restore my interpreted forms appearance, but maybe there is need to more accurately write code of TJvForm.CMShowingChanged? |
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The ghosting bug is happening on Windows XP only and is when a dialog form pops up behind its calling form. I have changed the code in TJvForm to only do it when the Parent property is not assigned. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2007-01-05 02:42 | ivan_ra | New Issue | |
| 2007-01-05 02:42 | ivan_ra | File Added: JvForm.zip | |
| 2007-01-08 03:36 | obones | Note Added: 0010554 | |
| 2007-01-08 03:36 | obones | Status | new => acknowledged |
| 2007-01-08 23:59 | ivan_ra | Note Added: 0010555 | |
| 2007-01-10 10:06 | ivan_ra | Note Edited: 0010555 | |
| 2007-06-19 06:21 | obones | Status | acknowledged => resolved |
| 2007-06-19 06:21 | obones | Fixed in Version | => Daily / SVN |
| 2007-06-19 06:21 | obones | Resolution | open => fixed |
| 2007-06-19 06:21 | obones | Assigned To | => obones |
| 2007-06-19 06:21 | obones | Note Added: 0013425 |
