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Increments the internal counter used to track the number of active update requests.
Source position: extctrls.pp line 1655
public procedure TCustomControlBar.BeginUpdate; |
Used in conjunction with EndUpdate to consolidate redraw requests for the control. Various methods check the value in the internal update counter before calling Invalidate to ensure that an unfinished update is not in progress. Invalidate is called in these methods when the internal counter reaches 0 (zero).
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Decrements the internal counter used to track update requests, and calls Invalidate when the counter reaches zero (0). |
| Version 4.0 | Generated 2025-05-03 | Home |