Custom task pane support in Office 2003

Question

I have created a C++ Office 2007/2010 add-in that exposes a custom task pane via ICustomTaskPaneConsumer and by implementing an ActiveX control. This works perfectly.

Now I want to include support for Office 2003. I have managed to add a toolbar button that should open up a task pane but it appears as if ICustomTaskPaneConsumer::CTPFactoryAvailable method is not being called.

Are task panes implemented differently in Office 2003? Is there something specific I need to do for this to work?

Answer 1

After many days of testing and research I have come to a conslusion that even though task panes exist in Office 2003, custom task panes are simply not exposed to developers. CTPs can be used in Office 2007+.