Virutal Keyboard

Gianluca86

Hi,
I am developing cross application (Windows and Linux) that can be installed on computers with touch screen.
I so need to create a virtual keyboard. But the only examples that I found they taking the focus only from the parent widget, but when I try to edit tables (lose focus as soon as I click on a button), and especially when using the QFileDialog (is modal) the keyboard is unusable.
I need a keyboard similar to that of windows, are there some examples?
There are other better ways?
Thank you

VRonin

Are you using QtWidgets or QtQuick?

Gianluca86

I'm using QtWidgets.

J.Hilk

@Gianluca86
any reason why you don't use

Qt Virtual Keyboard used to be commercial licenz only but that changed with the last update, same as QChart

Gianluca86

@J-Hilk : In linux I use the 5.5.1 version that does not have the Qt Virtual Keyboard, even in Windows that use the 5.7.0 is not present. I downloaded it from the website and now try to see how it works.
Question: It works well on desktops? Reading quickly seems more made for mobile than for a desktop application.

J.Hilk

@Gianluca86
Sadly I have no Idea, so far I had no need for an custom Virtual Keyboard. Usually I use the one the OS-provides or a hardware one :)

But I don't see why it shouldn't work on desktops.

Gianluca86

I'm trying to use, unfortunately, I don't understand how insert in my project and how to customize it. I'm using QTWidgets and C ++, not QML or QtQuick, and I find only examples in QML. In the documentation it says that it works on C ++.

VRonin

Yep Qt Virtual Keyboard is QML only, hence my question above.

You could try something like http://doc.qt.io/qt-4.8/qt-tools-inputpanel-example.html but it's almost impossible to internationalise

Gianluca86

Ok, so I need to use my old keyboard.
My original problem is the focus

VirtualKeyboard *pVirtKey = new VirtualKeyboard(this);
...

// VirtualKeyboard.cpp
...
QApplication::sendEvent(m_pParent->focusWidget(), &keyEventIns);
...

In this way from its parent (for example QMainWindow) I take the object that has the focus. I would not use this method but simply take the focus of the selected object, not passing a parent, Can I do this?

I modify this projet
WidgetKeyboard