|GUI Programming with Python: QT Edition|
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In this chapter we have laid a secure foundation for a complex multi-document application. This foundation, with only minor cosmetic changes, can be used over and again. For file-based MDI applications it is a perfect fit, but the same principles hold for database applications. In the next chapter, we will explore alternatives for the MDI paradigm; and when this is done, we are ready to start the real work of creating an application.