Add checkbox to QFileDialog

[krzysieklfc]

I'm calling QFileDialog::getExistingDirectory, but I would like to add a checkbox on the bottom right. What is the best way of doing it?

[Christian Ehrlicher]

You have to write your own dialog - QFileDialog does not support this.

[krzysieklfc]

@Christian-Ehrlicher

I tried this solution but I don't get how to extract the layout from subclassed QFileDialog.

QGridLayout* mainLayout = dynamic_cast<QGridLayout*>(this->layout());

This doesn't work.

[Christian Ehrlicher]

How to you execute the dialog? You have to use exec(), not one of the static functions...

[krzysieklfc]

@Christian-Ehrlicher I'm calling exec(), but the thing is that this->layout() returns 0 in my case. I have no idea why is that considering my code looks pretty much the same as in the example here

[Christian Ehrlicher]

Please provide some code.

[Pl45m4]

@krzysieklfc

From your "example":

- Are you using QFileDialog::DontUseNativeDialog ?
-> I am now! Problem solved - thanks.

Have you tried this?

Make sure, that your this-Pointer is not NULL

[krzysieklfc]

@Pl45m4 That solved it. Thanks for help