I have an event Filter for a comboBox. The issue I'm having is when I use mouseButtonRelease and select the drop down arrow, it only catches the signal if there is no data in the combo box. This is true only on Linux/MAC Linux. Once data is loaded the signal is not caught. On windows it works just fine.

If I use MouseButtonPress then it always works but the dropdown bounces back up after I release the mouse button to make a selection. This is why I prefer to use MouseButtonRelease unless there is a better alternative.

Any ideas?

//Assign event filter to the comboBox

Further down:
bool MainWindow::eventFilter(QObject *object, QEvent *event)

if(event->type() == QEvent::MouseButtonRelease)
if(object == ui->ipStringValueComboBox)

return true;
return false;


void MainWindow::IPComboBoxClicked()
//do some stuff


Thanks again.