Qt shortcut to hide QWidget

[Nyx]

Hi ,
I am looking how I could use a QShortcut to make my main QWidget appear and disappear. I tried this but it only hide the widget I can't show() it again by the same shortcut:

void ULmain::upShwHide()
{
    if(m_visible)
    {
        //this->QWidget::hide();
        setVisible(true);
        m_visible = false;
    }
    else
    {
        //this->QWidget::show();
        setVisible(true);
        m_visible = true;
    }
}

void ULmain::upShwHide()
{
    if(m_visible)
    {
        //this->QWidget::hide();
        setVisible(true);
        m_visible = false;
    }
    else
    {
        //this->QWidget::show();
        setVisible(true);
        m_visible = true;
    }
}

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I declared in my class constructor:

QShortcut * shwHide = new QShortcut(QKeySequence("Ctrl+Space"), this);

QShortcut * shwHide = new QShortcut(QKeySequence("Ctrl+Space"), this);

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and connect:

QObject::connect(shwHide, SIGNAL(activated()), this, SLOT(upShwHide()));

QObject::connect(shwHide, SIGNAL(activated()), this, SLOT(upShwHide()));

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I thought about a systemtray application but it doesn't seems to work.

[tbscope]

...
        setVisible(true);
...
        setVisible(true);
...

...
        setVisible(true);
...
        setVisible(true);
...

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Something's wrong here ;-)

Why not this?

setVisible(!isVisible());

setVisible(!isVisible());

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It makes the code a lot less complex and less error prone.

[Nyx]

Thanks for your answer even with your code still doesn't work. The widget hide() but can't show().

[Nyx]

However I tried both setVisible() method, hide() and show().

[totem]

my guess is : hiding your widget makes it loose keyboard focus, thus loosing shortcut sensitivity. I don't see any mean to show/hide your main widget using shortcut

[Nyx]

I found an application (Launchy) wich uses Qt and this feature but I could't find the source code.

[tbscope]

You can try and set a global shortcut.
See the Qt extended library for a class that does this.
http://www.qtcentre.org/threads/29969-LibQxt-0.6.0

[Nyx]

I didn't found any class which does that in Qt extended library.
What's a global shortcut?

[tbscope]

I didn't found any class which does that in Qt extended library.
What's a global shortcut?

You must not have looked very hard.
http://doc.libqxt.org/0.6.0/qxtglobalshortcut.html

[Nyx]

Thanks. Do you know I could configure my .pro file?

[Nyx]

The prog compile but still does not work. I'm under ubuntu 10.04.

[Nyx]

I tried with another shortcut (Ctrl+C) and it works!