Menu without action

mpergand

It's very unusual for a menu to trigger an action directly, it's more like a button behaviour.
If you want some buttons to trigger actions use a Toolbar, that's what it is made for.

Cordialement :)

yogis40

@jsulm
Hi, the compilation goes fine but when I click on the Clear menu as shown in the snapshot, the QtextEdit::clear method is not called or not working.
B/R
yogis40

SGaist

Hi,

As written in the triggered signal documentation:

This signal is emitted when an action in this menu is triggered.

yogis40

@SGaist :
Hi,
Thanks for your reply. I've looked into the documentation and not found a 'click' action in QtMenu.
Thanks by advance

yogis40

@yogis40
Sorry, i’ve Forgotten to ask my question.
How do we catch when the user is clicking on ‘Clear’ menu ? Is it possible to specify the ‘Clear’ in the QMenu::triggered(&Clear)
?
Thanks for your help and sorry to ask but I’m a newbie and struggle with Qt.

SGaist

It's not exactly a Qt problem. It's what you are trying to do. You're going against the UI guidelines of all desktop environments and against the normal usage of a menu.

The content of the menu bar is menus. Clicking on a menu should not trigger anythings else that showing its content.

Your clear action should be in for example an edit menu. You can put accelerator on it and even a keyboard shortcut.

mrjj

Hi
Just had a test.
connect(ui->menuClear,&QMenu::triggered, ui->textEdit, &QTextEdit::clear);
does not work as a top menu (with no sub items) added in Designer does not call triggered.
(it has no QAction to be triggered)
That is why its not working - as its expected to have sub items.

That said, its possible from code, using an QAction instead.

QAction *a = new QAction("Clear", this);
ui->menuBar->addAction(a);
connect(a, &QAction::triggered, ui->textEdit, &QTextEdit::clear);

That works however as SGist says, its not really a normal way for menus to work seen
from a users perspective. a clear command would normally be in Edit sub menu.

yogis40

Hello,
Thanks for your help and your answers.

Regarding the UI guidelines, I’m interested to found it. As mentioned previuously, I’m newbie in Qt and the last time I’ve programmed a UI it was in Visual Basic in 2004. Then, 15-years ago...

Thanks.

mrjj

@yogis40
Hi
Welcome back to GUI programming then :)
Such single click activation commands are often put in the QToolbar
(Lives just under the menu)

alt text

SGaist

@yogis40 said in Menu without action:

Regarding the UI guidelines, I’m interested to found it. As mentioned previuously, I’m newbie in Qt and the last time I’ve programmed a UI it was in Visual Basic in 2004. Then, 15-years ago...

There's per platform:

KDE's human interface guidelines
Apple's human interface guildines for macOS
Apple's human interface guildines for iOS
Apple's human interface guildines for tvOS
Windows desktop guideline