I really enjoyed discussing the library with you guys. I think I am getting a bit close to what the library should look like from my personal standpoint.
The main ideas come from the MFC's document/view architecture, STL and present discussion. The main building blocks of the libarary will be two classes, 'view' and 'viewdata'. Both classes will be thread-safe. It is similar to the document/view architecture in MFC. The 'viewdata' provides a connection between 'real-world' data and instances of the 'view' class. Several 'view' objects can be connected together in terms of sharing an instance of data. The 'view' class is just something that can show the data. For example a single cell in the standard list control will be derived from the 'view' class as will the whole list control itself. The 'view' class will have an event map. The event map will be implemented as pairs, (event, action). It'll need to be discussed. The events will be asynchronous, so that the actions will be called in the context of an internal thread. I think the boost::signal libarary will work just fine. The 'view' classes could be combined as STL containers. There will a set of gui managers that will be able to traverse such view containers and perform various actions or enforce layout rules. I think the gui managers will be implemented using the 'visitor' design pattern. The attached file is a demonstration of some these ideas. It is very simple. The main file is gui.h The example consists of a dialog box with connected static controls. If you change data in one control the connected control is updated automatically. It also shows how the GUI library communicates to the physical GUI platform (win32 in this case). The physical platform can be easily replaced w/o any changes to the library itself. The example doesn't have any event mechanism yet and it is not a thread-safe implementation. The example uses the boost::shared_ptr template. Eugene __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com
guitst.zip
Description: guitst.zip
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