Menu and subMenu
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Hi,
I have a main menu that I need to update it in run time, I want to add a submenu to it whenever a special node is added to the scene so that the user can see the node name in the submenu and do some actions based on that. I searched a lot but couldn't find a good way to do this in my application. I will be glad if someone can help me with it.
Thanks!
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You can use QAction to make new action and add it to the menu with addAction function and you can connect to triggered signal to do some action.
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QAction *action = new QAction(tr("New Sub Menu"),this);
action->setShortcut(Qt::CTRL | Qt::Key_M);
connect(action, SIGNAL(triggerSignalHere()), this, SLOT(youSlotHere()));
yourMainMenu->addAction(action);
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Thanks for the answer but I want to have sth like this:
a main menu with the following:
Delete
Move to right
Move to left
Add to ....where add to... is a sub menu containing the following:
"Add to ..." :
processor 1
processor 2
.
.
."Add to .. " menu is added in real-time whenever a new processor is created in the graphicsscene. and I have to avoid adding "Add to.. " multiple times.
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Take a look at this example. Maybe it will help you:
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//of course don't use globals, this is just an example
QMenu* menu = new QMenu( someParent );
menu->addAction("Delete");
menu->addAction("Move to right");
menu->addAction("Move to left");
QAction* addEntry = menu->addAction("Add to...");QMenu* procmenu = new QMenu(...);
addEntry->setMenu(procmenu);void addProcessor()
{
procmenu->addAction("Processor " + QString::number(procmenu->actions().size() + 1));
}void showMenu(QPoint pt)
{
addEntry->setVisible( procmenu->actions().size() > 0 );
menu->popup(pt);
}//and then use it:
addProcessor();
addProcessor();
showMenu(QPoint(x,y));
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Similarly you can add removeProcessor() etc.
