GlgHierarchyListener Class Reference

Detailed Description

GlgHierarchyListener is an object used by the GlgObject::AddListener method to attach listeners of the HIERARCHY_CB type (defined in the GlgCallbackType enum).

These listeners handle hierarchy events generated by subwindows and subdrawings when their templates are loaded, and may be used to attach different input listeners to viewports displayed in a subwindow, as well as to initialize template drawing after it has been loaded.

The object's HierarchyCallback method defines the type signature of the function that needs to be passed as a parameter of the GlgObject::AddListener method to add a hierarhy listener.

Public Member Functions
void	HierarchyCallback (GlgObject glg_object, GlgHierarchyData hierarchy_info)

Member Function Documentation

HierarchyCallback()

void HierarchyCallback	(	GlgObject	glg_object,
		GlgHierarchyData	hierarchy_info
	)

Method for handling hierarchy events from subwindows and subdrawings.

This method is invoked before and after setup of the template drawing.

Parameters

glg_object	Top-level viewport object to which the hierarchy listener is attached.
hierarchy_info	GlgHierarchyData object containing detailed event information, such as condition (before or after the setup), subwindow or subdrawing object that loaded the template (object member variable) and the template (subobject member variable)