Krzysztof Mossakowski
Windows Programming
2005 - Tasks
Cross-sectional task
The magnifying glass
Demonstration
Technical issues:
assume, that the content of the screen is constant (so it is enough to get the content only once during creating the window
there can be no flickering
change the level of the zoom using '+' and '-' keys
no caption bar and system menu
allow to close the program using Alt+F4