RAD Studio VCL Reference
TControl.Changed Method

Sends a CM_CHANGED message to the control.

procedure Changed;
__fastcall Changed();

Call Changed after changing the properties of the control in a way that affects the properties of a parent object. Changed sends a CM_CHANGED message back to the control. If the control is a windowed control, this message is bubbled up to the parent so that it can make any necessary adjustments. 


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