View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0003315 | JEDI VCL | 00 JVCL Components | public | 2005-11-16 15:15 | 2005-11-22 09:23 |
| Reporter | Mauricio Vargas | Assigned To | obones | ||
| Priority | normal | Severity | crash | Reproducibility | always |
| Status | resolved | Resolution | no change required | ||
| Product Version | 3.00 | ||||
| Target Version | Fixed in Version | ||||
| Summary | 0003315: Problem showing other forms in jvThread | ||||
| Description | When you are running a Thread from a jvThread componente, and want to show modal one form in the onExecute event of the thread, it crashes with the message "canvas does not allow to draw". procedure TForm1.TareaExecute(Sender: TObject; Params: Pointer); begin var_i := 0; repeat label1.caption := formatDateTime('hh:mm:ss:zz', now); label1.update; if var_i = 100000 then Begin Application.CreateForm(TForm2, Form2); form2.showModal; End; inc(var_i); until tarea.terminated; end; | ||||
| Tags | No tags attached. | ||||
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2005-11-16 15:15
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Error_jvThread_ShowModal.zip (4,360 bytes) |
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This is a principle problem of the threads. You must call the showModal with the synchronize function of the thread. Look at the synchmessagedlg function inside the thread. This could be a sample, how to handle this. Greetings Jens |
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Please read thoroughly the chapter on threads in the VCL help. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2005-11-16 15:15 | Mauricio Vargas | New Issue | |
| 2005-11-16 15:15 | Mauricio Vargas | File Added: Error_jvThread_ShowModal.zip | |
| 2005-11-18 04:02 | jfudickar | Note Added: 0008096 | |
| 2005-11-22 09:23 | obones | Status | new => resolved |
| 2005-11-22 09:23 | obones | Resolution | open => no change required |
| 2005-11-22 09:23 | obones | Assigned To | => obones |
| 2005-11-22 09:23 | obones | Note Added: 0008143 |
