(C++) Qt class design

Qt class design is the correct design of Qt classes.

Qt class design should follow general class design.

• Derive from QWidget [1]
• If you need custom Signal Slots, add Q_OBJECT [1]
• Check if the widget already exists [2]
• Pick the right base class [2]
• Decide on composite or draw [3]
• Decide which signals to emit [3]
• Decide carefully on types of signal parameters [3]
• Decide on publishing internal states [4]
• Decide which setter methods should be slots [4]
• Decide on allowing subclassing [4]
• Decide on parameters at construction time [5]
• Keep the Qt convention [5]

References

• [1] Qt Training: Widgets (part 3/3): Guidelines for Custom Widgets: Torsten Rahn, by basysKom YouTube
• [2] Qt Training: Widgets (part 3/3): Guidelines for Custom Widgets: Torsten Rahn, by basysKom YouTube
• [3] Qt Training: Widgets (part 3/3): Guidelines for Custom Widgets: Torsten Rahn, by basysKom YouTube
• [4] Qt Training: Widgets (part 3/3): Guidelines for Custom Widgets: Torsten Rahn, by basysKom YouTube
• [5] Qt Training: Widgets (part 3/3): Guidelines for Custom Widgets: Torsten Rahn, by basysKom YouTube