CODEWITHSUNDEEP
windows-7qt4
Stan
Stan

Reputation: 38265

Qt to gray out and disable all actions in MainWindow

Say upon launching the Qt application, is there a way to display a grayed out main window, and disable all the widgets (buttons/checkboxes/etc) - not able to click. Once the user open a file or do some init procedure, the main window becomes non-grayed out and enable all widgets. Is this something possible in Qt?

Upvotes: 6

Views: 14198

Answers (3)

JKSH
JKSH

Reputation: 2718

Yes. Just call QWidget::setEnabled(false) to disable a window/widget, and QWidget::setEnabled(true) to enable it.

By the way, the Qt documentation is very comprehensive. Just search there, and you should easily find answers to many questions.

Upvotes: 9

Cross
Cross

Reputation: 11

Add a gray overlay label, those size equals your main window. Of course, don't forget the setEnabled(false).

Upvotes: 0

il_boga
il_boga

Reputation: 1523

In my software, before creating a new widget, I disabled all the buttons in the parent window with this:

void MainWindow::disableAllButtons(bool toBeEnabled){    
    QList<QPushButton *> buttonsList = this->findChildren<QPushButton *>();
    for (int i = 0; i < buttonsList.count(); i++){
        buttonsList.at(i)->setEnabled(toBeEnabled);
    }
}

Of course I had to call this again, when closing the widget, to re-enable the buttons. Guess it can be adapted to disable/enable other kind of widgets. It works on QT 4.8.

Upvotes: 0

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