View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0005738 | JEDI VCL | 00 JVCL Components | public | 2011-12-12 15:20 | 2012-06-11 17:11 |
| Reporter | altink | Assigned To | obones | ||
| Priority | normal | Severity | feature | Reproducibility | always |
| Status | resolved | Resolution | suspended | ||
| Product Version | 3.39 | ||||
| Target Version | Fixed in Version | ||||
| Summary | 0005738: JvNTEventLog OnChange retrieves only every 5 sec | ||||
| Description | I need to retrieve windows Event Logs at the moment they are added. I place a JvNTEventLog and a memo in my form. I set the JvNTEventLog properties (design time): Log -> Security Source -> Security I activate JvNTEventLog in form creation: procedure TForm1.FormCreate(Sender: TObject); begin // Activate log JvNTEventLog1.Active := True; end; Then I wrote the code for the OnChange event to get notified in real time for the Security Event Logs procedure TForm1.JvNTEventLog1Change(Sender: TObject); begin JvNTEventLog1.Last; Memo1.Lines.Add(DateTimeToStr(JvNTEventLog1.EventRecord.DateTime)); end; I see that a new line is added to the memo exactly every 5 seconds. My Security Event Log is heavily used, it gets an entry almost every second or even quicker. I am loosing Event Log records because the JvNTEventLog seems to react only once every 5 seconds. Am I missing something in the way I use JvNTEventLog On Change ? Can you help ? best regards Altin | ||||
| Additional Information | memo text goes like 12/12/2011 2:14:21 PM 12/12/2011 2:14:26 PM 12/12/2011 2:14:31 PM 12/12/2011 2:14:36 PM 12/12/2011 2:14:41 PM 12/12/2011 2:14:46 PM 12/12/2011 2:14:51 PM 12/12/2011 2:14:56 PM 12/12/2011 2:15:01 PM 12/12/2011 2:15:06 PM 12/12/2011 2:15:11 PM 12/12/2011 2:15:16 PM | ||||
| Tags | No tags attached. | ||||
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OnChange is triggered by the thread via a call to Synchronize. I'm convinced that the delay comes from here. What could be done is call an unsynchronized event handler, this should solve the issue, provided you don't update the GUI at all from within this handler. |
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No answers, suspending the issue |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2011-12-12 15:20 | altink | New Issue | |
| 2012-02-22 14:58 | obones | Status | new => acknowledged |
| 2012-02-24 17:07 | obones | Note Added: 0019542 | |
| 2012-02-24 17:07 | obones | Status | acknowledged => feedback |
| 2012-06-11 17:11 | obones | Note Added: 0019827 | |
| 2012-06-11 17:11 | obones | Status | feedback => resolved |
| 2012-06-11 17:11 | obones | Resolution | open => suspended |
| 2012-06-11 17:11 | obones | Assigned To | => obones |
