paweld/lazarus
1
0
Fork 0
mirror of https://gitlab.com/freepascal.org/lazarus/lazarus.git synced 2025-04-21 14:39:27 +02:00
Code Issues Packages Projects Releases Wiki Activity

docs: TControl.OnResize

Browse Source 
git-svn-id: trunk@18421 -
This commit is contained in:
mattias 2009-01-24 18:46:44 +00:00
parent 8ad5b6f96b
commit 24dec9b12f
1 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
docs/xml/lcl/controls.xml
View File

@ -7513,7 +7513,14 @@ Reads a logical (boolean) flag or sets it to determine whether this object is a
<element name="TControl.OnResize">
<short>Event Handler for resize of control</short>
<descr>This event is triggered whenever the Width, Height, ClientWidth or ClientHeight of the control has changed.
During autosize the size can change multiple times and only the last change triggers the OnResize.</descr>
During autosize the size can change multiple times and only the last change triggers the OnResize.
Use OnResize to react to resizes or to put your custom aligning, positioning code into this.
To react to moves use the OnChangeBounds event.
Common mistake:
Keep in mind that ClientWidth and ClientHeight can change even when Width, Height stays the same. For example when the theme or the font changes the Width, Height of a TForm, TGroupBox, TPageControl stays, but the frame changes and thus the ClientWidth, ClientHeight too. This does not happen that often under windows, but it happens quite often on other platforms.
Especially it is not sufficient to write only a TForm.OnResize handler to resize all controls on the form. This is a common bug in Delphi applications.
</descr>
<seealso>
<link id="#rtl.Classes.TNotifyEvent"/>
</seealso>