Using Spy++, one can easily find the correspondence of the SolidWorks Property Manager Tree’s hierarchies:
The first button, with caption “ ” is the expand button, and the five tabs correspond to the subsequent 5 windows. The only visible tab is the active tab.
Note the 2nd tab is PropertyManager page and its caption is “uiVisualSketchEditorView_c”. With these dissection, one can then perform some interesting tasks in code.