Version: 5.6
public int CountInProperty ();

説明

このプロパティー自体を含む、このプロパティーの Visible children (見えている子) をカウントします

This is useful for allocating height for drawing this property including its children. Note that calling the method will move the property forward, so if this is not the desired behavior make a copy of the property before calling the method using Copy.