In Part 4 of this programme, Andy Bower completes the Air Traffic Control simulation game.
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You will need Quicktime to view these videos. Click on the image at left to view inside your browser or right click and choose Save As to download the file to play later. Viewing using QuickTime has the advantage that you can use chapter markers to quickly jump to different locations within the programme. |
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In this session, Andy will show you how to:
- Use events to observe changes in a model object.
- Synchronise a background process with the User Interface process.
- Populate ListView columns with data.
- Implement mouse selection for a custom view.
- Use #queryCommand: to enable and disable menu items.
- Use a Windows timer to generate periodic events.
This is the last part of the series.
The final Smalltalk code for the game is available in a Dolphin source package for you to load into a Community Edition or Professional image. The code supplied below is a slightly refined version of the game shown in the video series; the logic is the same but the appearence has been somewhat spiced up.