问题
Is there any easy way to open the Qt dialogs in the same position as they were the last time the application was open ?
i.e. preserve position of dialogs between application sessions ?
By easy way I mean not to have manually write the window position in file, and then read :)
回答1:
You can use the QSettings class to achieve this. It's an abstraction class that allow your applications to store its settings in order to retrieve them at next launch.
Save settings:
QSettings settings("ValueName", "Value");
Read settings:
QString v = settings.value("ValueName");
回答2:
Use QSettings along with QWidget::restoreGeometry() and QWidget::saveGeometry().
回答3:
Better to save dialog->pos(), dialog->size(), dialog->isMaximized(), cause dialog->saveGeometry() doesn't maximize the window.
QSettings is the preffered way to save configuration
来源：https://stackoverflow.com/questions/1538425/how-to-control-the-position-of-qdialog