How do I update a ComboBox after opening a QDialog?
The code below does not update if you have made an update to db. I have to close the application and open it to show the new data:
Dialog::Dialog(){
carregar_comboBox();
}
void Dialog::carrega_comboBox(){
qry..
while..
ui->comboBox->addItem(qry.value(0).toString());
}
By all means, you need the carregar_comboBox() function to always be called before the dialog is displayed on the screen. A simple solution is to re-implement the show() function by overwriting QDialog::show() :
class SeuDialog : public QDialog {
\* ... *\
public:
// Sempre que alguém chamar essa função para mostrar a dialog...
void show() {
carregar_comboBox(); // Primeiro carregue sua ComboBox
QDialog::show(); // Somente depois mostre de fato a dialog
}
}
It would also be interesting to implement showMaximized() similarly so that the behavior is consistent.