QFileDialog style is different in static built qt

[dalishi]

I'm getting different window style in my static qt build and dynamic qt build.

QString filename = QFileDialog::getOpenFileName(this,
        tr("Open Image"), "/home", tr("Image Files (*.png *.jpg *.bmp)"));

I built a static qt and linked to it, and i got this style:

I don’t mind this simple looking but I got errors when I browse files:

Case insensitive sorting unsupported in the posix collation implementation
Numeric mode unsupported in the posix collation implementation

When I linked to the normal dynamic qt, I got the system style window without any errors:

I don't know whether this is related to GTK+ support in my static build qt. Fact is the static built qt doesn't have GTK+ support. And when I enabled the build options -gtk, configure says:

Feature 'gtk3' was enabled, but the pre-condition 'features.glib && libs.gtk3' failed.

I'm using Qt5.12 on Ubuntu1604.

My question is how should I remove the "Case insensitive sorting unsupported" error and if possible, how to get system-looking window even with static built qt. Thanks.

[SGaist]

Hi,

Based on your error, you are missing the GTK3 development libraries.

[dalishi]

Hi @SGaist Install the gtk3 dev does not eliminate the error "pre-condition 'features.glib && libs.gtk3' failed".

sudo apt-get install libgtk-3-dev libglib2.0-dev

[SGaist]

Did you do a configure rerun from a clean state ?

[dalishi]

@SGaist a clean state build works. Thanks.