msaa

While working on automating an Infragistics UltraTree control in a C# Winforms application I found that the UltraTree implemented the AccessibleObject model (MSAA). I was able to successfully grab the IAccessible interface by putting the hwnd grabbed from spy++ into IAccessible* accessibleObject; AccessibleObjectFromWindow(hwnd, OBJID_CLIENT, IID_IAccessible, (void**)&accessibleObj); The problem is that when I now call long childCount; accessibleObj->get_accChildCount(&childCount); The result that I get back is zero. From looking at the UltraTree source code I noticed that its implementation

I am trying to retrieve accessible information from a standard VCL TEdit control. The get_accName() and Get_accDescription() methods return empty strings, but get_accValue() returns the text value entered into the TEdit. I am just starting to try to understand the MSAA and I'm a bit lost at this point. Does my TEdit need to have additional published properties that would be exposed to the MSA? If so would that necessitate creating a new component that descends from TEdit and adds the additional published properties such as "AccessibleName", "AccessibleDescription", etc... ? Also, note, I have