QML Textinput

143U

Hallo, I would like to create a textinput and get the values from the user, once user enters the value I wouldlike to use these values in my cpp code. I am stucj with this for the past 10 days. Any kind of help would be appreciated.

Regards,

Mohamed

143U

User enters the value in text input field say some : 100
Now I neeed to store this value in variable x, and make coressponding change in cpp document. Please help me with the idea and the code

stevenceuppens

Hi Mohamed!

did you already read this doc?
http://doc-snapshot.qt-project.org/4.8/qtbinding.html

its a good introduction about exchanging data between QML and C++!

Rgds, Steven

143U

Yes, I did but this did not help me. Do you have an idea on how to go about with this.. Thanks in advance

143U

I have an idea on how to link the date but I need to get the user date from the textinput field which is a big barrier for me, am stuck with this for the past 10 days:(

stevenceuppens

I suggest to derive your C++ class from QObject, and add that class to the Declaratice view.

@
MyClass myClass; // <-- Create your class

QDeclarativeView view;
view.rootContext()->setContextProperty("myClass", &myClass); // <-- Add class to view

view.setSource(QUrl::fromLocalFile("MyQml.qml"));
view.show();
@

Within your C++ class, create a slot that accepts a QString as parameter,

@
class MyClass : public QObject
{
Q_OBJECT

public slots:
void cppSlot(const QString &value) {
qDebug() << "Called the C++ slot with value:" << value;
}
};
@

from within QML, link your textinput to this slot

@
// MyItem.qml
import QtQuick 1.0

TextInput {
id: item
width: 100; height: 20

 onAccepted: myClass.cppSLot(item.text)

}
@

This is a quick draft, but i hope this would make it more clear !?

Rgrds, Steven

143U

I just have to enter the value on the keyboard and this wil work??
Regards,
Mohd

stevenceuppens

i guess :) thats how i do it...

Did you try it already this way?

143U

Thanks you Mr. Steven I got an idea now..

143U

Yes, I did give it a try before, but I did not include onAccepted attribute, is there any way we can make an UI where the user enters the data once he hits enter the Ui disappears, and takes it to the CPp window.

143U

any idea on how to make the changes in qml from cpp--

143U

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