5. Dialogs
Almost every GUI application has at least one dialog, and the majority of GUI applications have one main window with dozens or scores of dialogs. Dialogs can be used to make announcements that are too important to put in the status bar or into a log file. In such cases, they typically just have a label for the text and an OK button for the user to press when they’ve read the message. Mostly, dialogs are used to ask users questions. Some are simple and need just a yes or no answer. Others ask users to make another kind of choice—for example, what file, folder, color, or font do they want to use. For all these, PyQt provides built-in dialogs.
Our focus in this chapter is on creating custom ...
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