Style sheet woes

GrahamL

Hi
I have a style sheet that sets the background colour for QDialog -
@
QDialog {
background-color: red;
}
@
My application has a QListWidget added from Designer and is created with its containing layout as the parent,
Upon selecting an element in the list I launch a dialog, but the style sheet is not applied to this dialog.
I believe that this is because the list widget is not created with my main window as a parent

I thought that by specifying the background colour in the style sheet that all dialogs (regardless of parent) would have the same background colour.

I would be grateful if someone could explain why this is not the case

Thanks in advance

sierdzio

Style information is propagated down the line: from parent to all children. If you create an unparented dialog, you need to set the stylesheet on it yourself.

GrahamL

Hi
thanks for your quick response
here is the code I use to create the dialog
@
UserInterface::SessionManagementUI::CreateSessionDialog dialog(this);
@
so I am creating it with a parent

sierdzio

Do you set that stylesheet on your whole application, or on a certain widget? Maybe the setStyleSheet() call is on a different branch of parent-child tree?

GrahamL

Hi
I set the style sheet in the constructor of my main window -
@
QString style = "QDialog {background-color: red;}";
qApp->setStyleSheet(style);
@

If I find the main window and use that as the parent then the dialog is displayed as expected -
@
QWidget*x = this->parentWidget();
x = x->parentWidget();
x = x->parentWidget();
UserInterface::SessionManagementUI::CreateSessionDialog dialog(x);
@

sierdzio

Ok, this seems like a bug then. Qt4 or 5?

GrahamL

I am using 5.0.2

sierdzio

Please test in Qt4 if possible, and "report it on Jira":https://qt-project.org/wiki/ReportingBugsInQt.