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RAD Studio VCL Reference
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TComponent.ValidateInsert Method
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RAD Studio VCL Reference
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Provides the interface for a method that validates an child component before it is inserted.
procedure ValidateInsert(AComponent: TComponent); dynamic;
__fastcall ValidateInsert(TComponent * AComponent);
ValidateInsert does nothing in TComponent. Descendant classes can override it to disallow a component from accepting an object as a child. By default ValidateInsert allows any object to be inserted into the component.
If a component needs to validate only certain objects, descendant classes can override ValidateInsert to filter out those objects. To disallow an insertion, raise an exception in the derived method.
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Description