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Reference for unit 'Controls' (#lcl)

TControl.CheckChildClassAllowed

Returns True if the class is allowed for child controls.

Declaration

Source position: controls.pp line 1730

public function TControl.CheckChildClassAllowed(

ChildClass: TClass;

ExceptionOnInvalid: Boolean

):Boolean;

`ChildClass`		The class of the intended child control.
`ExceptionOnInvalid`		When True, raise an exception when the class is not allowed.

True if the class is allowed for child controls.

Only few controls restrict the class of acceptable child controls. E.g. a PageControl only accepts TTabSheet descendants as children.

An EInvalidOperation can be generated (see ExceptionOnInvalid).

Version 3.2

Generated 2024-02-25