PFC has one window in the extension layer for each window type. For example, w_child, w_popup, w_response, w_main, w_frame. It has one window that has sheet functionality, w_sheet. To use the window services, you need to create windows by inheriting from one of the above mentioned windows. As you know, we have created w_mdi_frame window by inheriting from w_frame window.
The following are the list of window services:
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Basic Window Service |
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Preference Service |
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Sheet Management Service |
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Statusbar Service |