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Event handler signalled when the size or layout for child controls has been changed.
Source position: controls.pp line 1996
public property TControlChildSizing.OnChange : TNotifyEvent |
OnChange is a TNotifyEvent property with the event handler signalled (when assigned) from the Change method. It occurs after child controls have been resized and/or realigned.
The Sender argument is the TControlChildSizing instance for the event notification.
In a TWinControl instance, its DoChildSizingChange method is assigned as the default handler routine used in OnChange. It invalidates the preferred sizes for the child controls, and calls their Realign method.
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Notifies the Control of the child sizing changes and signals the OnChange event handler. |
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Called after a change in ChildSizing information to trigger further processing. |
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Adjusts the size and placement for the control and all of its children. |
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Marks the preferred size as invalid for this control and all parents (implies that we will look for another). |
| Version 3.2 | Generated 2024-02-25 | Home |