Design notes

Choosing a program framework

This program uses the document and user interface frameworks through the Presentation framework. It's the designated framework for building programs that comply with the Taligent human interface guidelines for graphical user interfaces. Besides being easy to work with, the Presentation framework provides many features for free, such as standard menus.

For information on the Presentation framework, see Desktop Concepts.

Choosing presentation classes

Supporting embedding is a useful feature (and not much work), when you use TGUIEmbedderModel and TGUIEmbedderModelView.

You create the model and the view through TGUIModelViewStationeryFor, a stationery class that provides a default presenter state and presenter.

Choosing an off-screen buffer

Concurrent Actors uses Taligent's TIndexedImage class as a buffer because it supports a specific video card without conversion. Eventually, Taligent will provide an API class for choosing the best available buffer for a platform.


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