Can you add a toolbar to QDialog?

问题

I'm working on a project that needs to call a modal window with a toolbar to do some work on some data before it's loaded. The reason I need the toolbar is the user has a few different possible options that can be combined.

The obvious choice here is a Modal dialog (which I have working right now). The issue is I want a toolbar. This is a two part question:

Is it possible to add a toolbar to a QDialog? (also is it possible to do this in Qt Designer?)
If 1. is not possible, how can I make a QMainWindow modal?

回答1:

If you don't need the built-in drag and drop feature of QMainWindow's toolbars, you can simply add a QToolBar to any layout, including QDialog's layout(). See the DigviJay Patil's answer below for details, which is definitely cleaner conceptually.

Otherwise, please read on.

It is not directly possible to add a QToolBar to a QDialog in the QMainWindow::addToolBar() sense, because QDialog inherits only QWidget and not QMainWindow, as you noted (hence do not have the method addToolBar())
You can't make a QMainWindow modal, but you can insert a QMainWindow in a QDialog this way:

Code:

MyDialog::MyDialog() :
    QDialog()
{
    QMainWindow * mainWindow = new QMainWindow(); // or your own class
                                                  // inheriting QMainWindow

    QToolBar * myToolBar = new QToolBar();
    mainWindow->addToolBar(myToolBar);

    QHBoxLayout * layout = new QHBoxLayout();
    layout->addWidget(mainWindow);
    setLayout(layout);
}

Indeed, a QMainWindow doesn't necessarily have to be a top-level widget, and you can even insert several QMainWindows as children of a single widget (may not be the wisest choice though, as the user would probably be confused with the separate sets of menu bars, toolbars, dock widgets, etc.).

回答2:

You can simply use the setMenuBar function of the layout manager that is installed on your QDialog:

myDialog->layout()->setMenuBar(myMenuBar);

回答3:

You can add QToolBar in QDialog. But as a QWidget. Please have a look

MyDialog::MyDialog(QWidget *parent) : QDialog(parent)
{
   QVBoxLayout *mainLayout = new QVBoxLayout(this);

   QToolBar *toolBar = new QToolBar();
   mainLayout->addWidget(toolBar);

   QAction *action1 = new QAction("Add", toolBar);
   QAction *action1 = new QAction("Del", toolBar);

  //Add What you want
}

As QToolBar is child of QWidget we can add it as Widget. Using Layout you can adjust its position. Please check this link http://developer.nokia.com/community/wiki/How_to_use_QToolBar_and_QToolButton_in_Qt

来源：https://stackoverflow.com/questions/18435801/can-you-add-a-toolbar-to-qdialog

标签

c++

modal-dialog

qmainwindow

qdialog