how to read the text of pushbutton in XML Qt

[sankarapandiyan]

i have done something but it doesnt work ,This is my code

            void MainWindow::on_okbutn_clicked()
{
   
            QDomDocument document;
        QDomElement root = document.createElement("pushbuttn_text");
            QString text1 = ui->pushbutton1->text();
        QDomElement elemTab1 = document.createElement("ss");

       elemTab1.setAttribute(QString::data(text1);

//elemTab.appendChild( document.createTextNode( text))
                 
         root.appendChild(elemTab1);

          QString filename1=QDesktopServices::storageLocation(QDesktopServices::DataLocation)+"/home/newuser/Desktop/filenamemw.xml";

      QFile file("/home/newuser/Desktop/filenamemw.xml");
      if(!file.open(QIODevice::WriteOnly | QIODevice::Text)) {
        qDebug() << "Open the file for writing failed";
      } else {
        QTextStream stream(&file);
        stream << document.toString();
        file.close();
        qDebug() << "Writing is done";
      }

in this code writing is done properly ,and reading is the problrm i think ,
and this is my error

//error: no matching function for call to 'QString::data(QString&)'~~

i think the problem is in setting attribute i dnt know how to resolve if anybody knows tel me pls.

Thanks in advanzZ.....

[jsulm]

@sankarapandiyan said in how to read the text of pushbutton in XML Qt:

elemTab1.setAttribute(QString::data(text1);

Please read the documentation: http://doc.qt.io/qt-5/qstring.html#data
First: data() is not static, second data() takes no parameters.
So, it should be

elemTab1.setAttribute(text1.data());

But actually there is no need to convert QString to char*, so

elemTab1.setAttribute(text1);

[sankarapandiyan]

@jsulm thanks a lot

[aha_1980]

@sankarapandiyan

So if your issue is solved, please mark this topic as SOLVED too. Thanks

[sankarapandiyan]

@aha_1980 nop its under process..
please try to resolve if yu can
Thanks in Advance

[sankarapandiyan]

@aha_1980 i'll do aftr i completed

[aha_1980]

@sankarapandiyan

So what's your problem now? Did you try @jsulm's suggestion? Do you get another error?

[sankarapandiyan]

@aha_1980 yes same error i got it repeatdly .@jsulm gave the document to read ,now i am doing that.

    QDomDocument document;

QDomElement root = document.createElement("pushbuttn_text");

   QString text1 = ui->pushbutton1->text();
                         
 QDomElement elemTab1 = document.createElement("ss");

    elemTab1.setAttribute(text1);

//elemTab.appendChild( document.createTextNode( text))

          root.appendChild(elemTab1);

and this is my code

[Ratzz]

@sankarapandiyan

setAttribute should take 2 argument?

[sankarapandiyan]

@Ratzz nop only one it want to take

[sankarapandiyan]

@Ratzz nop only one it want to take

[Ratzz]

@sankarapandiyan
You want to take one attribute ??
Did you see document ? http://doc.qt.io/archives/qt-4.8/qdomelement.html#setAttribute
What is the error now?

[jsulm]

@sankarapandiyan said in how to read the text of pushbutton in XML Qt:

nop only one it want to take

This is wrong.
setAttribute takes two arguments as you can see in documentation.
A XML attribute has a name and a value, that's why setAttribute has two parameters.

[sankarapandiyan]

@jsulm oh sry for my wrong answer
is it possible to do without attribute !coz i want to read one paramtr only

[Ratzz]

@sankarapandiyan

yes but using QDomText
But it creates the text node.

[sankarapandiyan]

@Ratzz by directly reading ??

[jsulm]

@sankarapandiyan I don't understand you: setAttribute sets an attribute, it does not read anything. So, what do you want to do?
If your attribute does not have a value you can pass empty string as value:

elemTab1.setAttribute(text1, "");

[sankarapandiyan]

@jsulm said in how to read the text of pushbutton in XML Qt:

If your attribute does not have a value you can pass empty string as value:

sure....i will try Thanks a lot

[sankarapandiyan]

@Ratzz thanks a lot

[Ratzz]

@sankarapandiyan

May be this way

    QString text1 = ui->pushbutton1->text();
    QDomText t = doc.createTextNode(text1);
    tag.appendChild(t);

[sankarapandiyan]

@Ratzz i think it will work i will try thanks a lot

[Ratzz]

@sankarapandiyan

May be this

void MainWindow::on_okbutn_clicked()
{
    QDomDocument document;

    QDomElement root = document.createElement("pushbuttn_text");
    document.appendChild(root);

    QDomElement elemTab1  = document.createElement("ss");
    root.appendChild(elemTab1 );

    QString text1 = ui->pushbutton1->text();
    QDomText t = document.createTextNode(text1);
    elemTab1 .appendChild(t);

    QFile file("C:\\Users\\name\\Desktop\\test.xml");
    if(!file.open(QIODevice::WriteOnly | QIODevice::Text)) {
        qDebug() << "Open the file for writing failed";
    } else {
        QTextStream stream(&file);
        stream << document.toString();
        file.close();
        qDebug() << "Writing is done";
    }
}

[sankarapandiyan]

@Ratzz yes it works but its repeat for three times i dont know why ! :-(
but anyway thanks all for helping me

[VRonin]

For people passing by, using the entire xml module for operations like these is like using a bazooka to kill a fly.
QXmlStreamWriter is more than enough and it's also probably easier to use

[sankarapandiyan]

@VRonin yeah! i know i will try surely

[Ratzz]

@sankarapandiyan said in how to read the text of pushbutton in XML Qt:

but its repeat for three times i dont know why ! :-(

Can I see your code??

[sankarapandiyan]

@Ratzz <pushbuttn_text>
<Scanmode tab1="DEFAULT"/>
<ss 3D_WIDE="">3D_WIDE</ss>
</pushbuttn_text>
<pushbuttn_text>
<Scanmode tab2="MACULA"/>
<ss 3D_WIDE="">3D_WIDE</ss>
</pushbuttn_text>
<pushbuttn_text>
<Scanmode tab3="GLAUCOMA"/>
<ss 3D_WIDE="">3D_WIDE</ss>
</pushbuttn_text>

[Ratzz]

@sankarapandiyan
Its the output.
You may have pressed button 3 times?
Can you show me CODE?

[sankarapandiyan]

@Ratzz

       {                          
            QDomDocument document;
             QDomElement root = document.createElement("OCT_TOUCH");
              document.appendChild(root);
              qDebug() <<ui->wide3ddefltbtn->text ();

                   for (int var = 0; var < ui->mwtabwidget->count(); ++var) {
                   qDebug() << ui->mwtabwidget->tabText(var);

                 QString text = ui->mwtabwidget->tabText(var);
                 QDomElement elemTab = document.createElement("Scanmode") ;
                  elemTab.setAttribute("tab"+QString::number(var+1), text);
        
        
        QDomElement root = document.createElement("pushbuttn_text");
            document.appendChild(root);
            QDomElement elemTab1  = document.createElement("ss");
            root.appendChild(elemTab1 );

            QString text1 = ui->wide3ddefltbtn->text();
            QDomText t = document.createTextNode(text1);
            elemTab1 .appendChild(t);
            root.appendChild(elemTab);
 }

      QString filename1 = QDesktopServices::storageLocation(QDesktopServices::DataLocation)+"/home/newuser/Desktop/filenamemw.xml";
      QFile file("/home/newuser/Desktop/filenamemw.xml");
      if(!file.open(QIODevice::WriteOnly | QIODevice::Text)) {
        qDebug() << "Open the file for writing failed";
      } else {
        QTextStream stream(&file);
        stream << document.toString();
        file.close();
        qDebug() << "Writing is done";
      }

[jsulm]

@sankarapandiyan Can you post the WHOLE code of that method?
What is before

{                          
            QDomDocument document;

?
Do you have a loop there?

[sankarapandiyan]

@jsulm no no there is no loop

[jsulm]

@sankarapandiyan Actually there is:

for (int var = 0; var < ui->mwtabwidget->count(); ++var) {
    qDebug() << ui->mwtabwidget->tabText(var);
    QString text = ui->mwtabwidget->tabText(var);
    QDomElement elemTab = document.createElement("Scanmode") ;
    elemTab.setAttribute("tab"+QString::number(var+1), text);
           
    QDomElement root = document.createElement("pushbuttn_text");

[sankarapandiyan]

@jsulm but that is for reading the tabwidget of tabs only i think !!!!!!

[Ratzz]

@sankarapandiyan
You have missed a appendChild to the main root element.

[sankarapandiyan]

@Ratzz oh really where ?!! i dnt know

[jsulm]

This post is deleted!

[Ratzz]

@sankarapandiyan said in how to read the text of pushbutton in XML Qt:

oh really where ?!! i dnt know

Can you write the exact output you want .
Write tag wise in words.
may be image also helps.

[sankarapandiyan]

@Ratzz
<3D wide/>
<Scanmode Tab1="Default"/>
<Scanmode tab2="Macula"/>
<Scanmode tab2="Glucoma"/>

this is the output
2 nd 3rd and 4th line is the tab widet of tabs ,i am using the loop there to get the tab widget of tabs(text)

[Ratzz]

@sankarapandiyan said in how to read the text of pushbutton in XML Qt:

this is the output

Then where should the push button needs to be placed??
what is the ss tag for?

[sankarapandiyan]

@Ratzz sorry wait wait going to finish my code by using QList<QPushButton*> blist = ui->frame_2->findChildren<QPushButton*>();.. with a help of @mrjj
i wil post here within a minute .. thanks for your help