一种在Mac上强制关闭模态QFileDialog的方法

Question

I have a Qt application which at some point calls QFileDialog::getOpenFileName . However, at any point my application can get an event which will make this file dialog irrelevant, so I want to forcefully close it.

This is my way of trying to close this dialog:

QWidget *modalWidget = QApplication::activeModalWidget();
if (modalWidget)
    modalWidget->close();

This works on Windows, but I get strange behavior on Mac. Instead of closing, it hides the dialog instead. Execution never leaves QFileDialog::getOpenFileName call and since it's a modal dialog, underlying app becomes permanently frozen.

Answer 1

For the sake of closure, I ended up closing the dialog by calling native [NSApp abortModal] .

Note that this workaround might not be needed if this issue was fixed in the recent Qt releases (haven't checked since Qt 5.8).