This callback is fired when a property page is opened (inspected).
Use this callback to initialize a property page. To access the property page, use the PPG object in your OnInit callback.
Custom Properties implemented in a scripting language.
| 
function <property_name>_OnInit() 
{ 
        ... 
}
 | 
| 
def <property_name>_OnInit( in_context ):
        ...
 | 
| 
Function <property_name>_OnInit( in_context )
        ...
End Function
 | 
| 
sub <property_name>_OnInit 
{ 
        my $in_context = shift; 
}
 | 
<property_name> is the name specified in the call to PluginRegistrar.RegisterProperty, with any spaces converted to underscores. For example, if you register a property with the name "My Property", the callback function names start with "My_Property".