[SOLVED] Problems with changing text to QWidgets

[xcoder]

I can't figure out why I can't change the text for my button!

When I try to run my app it just returns: "file:///home/user/Desktop/Bizness/simple_gui/myqml.qml:30:14: Cannot assign to non-existent property "texts"
texts: "Right"
^ "

Here is my mypushbutton.h:
@#include <QtDeclarative/QDeclarativeExtensionPlugin>
#include <QtDeclarative/qdeclarative.h>
#include <QtGui/QGraphicsProxyWidget>
#include <QtGui/QPushButton>
#include <QDebug>

class MyPushButton : public QGraphicsProxyWidget
{
Q_OBJECT
Q_PROPERTY(QString texts READ texts WRITE setsText)

public:
MyPushButton(QGraphicsItem* parent = 0);

QString texts() const;
void setsText(const QString &texts;);

QString name() const;
void setName(const QString &name;);

private:
QPushButton *widget;
};
@

mypushbutton.cpp:
@#include "mypushbutton.h"
#include <QtGui/QPushButton>
#include <QDebug>

MyPushButton::MyPushButton(QGraphicsItem* parent)
: QGraphicsProxyWidget(parent)
{
widget = new QPushButton("MyPushButton");
widget->setAttribute(Qt::WA_NoSystemBackground);
setWidget(widget);

//QObject::connect(widget, SIGNAL(clicked(bool)), this, SIGNAL(clicked(bool)));

}

 QString MyPushButton::texts() const
 {
     return widget->text();
 }


 void MyPushButton::setsText(const QString &texts;)
 {
     if (texts != widget->text()) {
         widget->setText(texts);
         //emit textChanged();
     }
 }

@

main.cpp
@#include <QApplication>
#include "piechart.h"
#include "mypushbutton.h"
#include <qdeclarative.h>
#include <QDeclarativeView>
#include "simple_app.h"

int main(int argc, char *argv[])
{
QApplication app(argc, argv);

qmlRegisterType<PieChart>("Charts", 1, 0, "PieChart");
qmlRegisterType<MyPushButton>("QWidget", 1, 0, "MyPushButton");

simple_app *dialog = new simple_app;

dialog->show();
return app.exec&#40;&#41;;

}
@

and part of my qml
@ MyPushButton {
id: button1
x: 100; y: 100
texts: "Right"
transformOriginPoint: Qt.point(width / 2, height / 2)

     }

@

However, if I delete this line "texts: "right"" my app runs fine and shows the QWidget button!

[mlong]

The code you posted works for me (Assuming an import QWidget 1.0 at the head of the QML file.) What platform/version are you using?

[xcoder]

xubuntu 11.04 32bit, Qt Creator 2.2.1

And yes I've an "import QWidget 1.0" at the top of my QML file

Funny that I've successfully implanted "this example":http://doc.qt.nokia.com/4.7-snapshot/declarative-tutorials-extending-chapter2-methods.html

But I can't get to work with simple button.

Maybe I'll just install opensuse, because lately the new version of ubuntu has been giving my some headaches. I tried LTS, but I need newer apps than LTS has. And the new 11.04 version has a lot of glitches!

Best Regards
Raivis

[mlong]

Here's the code I ended up trying (starting with a Creator-generated QML project.)

main.cpp:
@
#include <QtGui/QApplication>
#include "qmlapplicationviewer.h"
#include "mypushbutton.h"
#include <qdeclarative.h>
#include <QDeclarativeView>

int main(int argc, char *argv[])
{
QApplication app(argc, argv);

qmlRegisterType<MyPushButton>("QWidget", 1, 0, "MyPushButton");

QmlApplicationViewer viewer;
viewer.setMainQmlFile(QLatin1String("qml/test/main.qml"));
viewer.showExpanded();

return app.exec();
}
@

mypushbutton.h:
@
#ifndef MYPUSHBUTTON_H
#define MYPUSHBUTTON_H

#include <QtDeclarative/QDeclarativeExtensionPlugin>
#include <QtDeclarative/qdeclarative.h>
#include <QtGui/QGraphicsProxyWidget>
#include <QtGui/QPushButton>
#include <QDebug>

class MyPushButton : public QGraphicsProxyWidget
{
Q_OBJECT
Q_PROPERTY(QString texts READ texts WRITE setsText)

public:
MyPushButton(QGraphicsItem* parent = 0);

QString texts() const;
void setsText(const QString &texts);

private:
QPushButton *widget;
};

#endif // MYPUSHBUTTON_H
@

mypushbutton.cpp:
@
#include "mypushbutton.h"

MyPushButton::MyPushButton(QGraphicsItem *parent) :
QGraphicsProxyWidget(parent)
{
widget = new QPushButton("MyPushButton");
widget->setAttribute(Qt::WA_NoSystemBackground);
setWidget(widget);

}

QString MyPushButton::texts() const
{
return widget->text();
}

void MyPushButton::setsText(const QString &texts)
{
if (texts != widget->text()) {
widget->setText(texts);
}
}
@

main.qml:
@
import QtQuick 1.0
import QWidget 1.0

Rectangle {
width: 360
height: 360

MyPushButton {
id: button1
x: 100; y: 100
texts: "Right"
transformOriginPoint: Qt.point(width / 2, height / 2)
}
}
@

You might give it a shot and see if that works for you. If so, it might give you a better starting point for debugging.

[xcoder]

Thanks your given code works, Now I'm going to try and figure out whats wrong with main!

[mlong]

Great! When you figure it out, let us know!

[xcoder]

Found the problem! A glitch in Qt Creator.
Both of the codes are practically identical!

I just changed the name of function, and suddenly my compiler returns this kind of error:
/home/user/Desktop/Bizness/simple_gui/mypushbutton.cpp:-1: error: undefined reference to `vtable for

Actually 11 of them, all "undefined refernece to 'vtable ......"

I just deleted all *.o files in my application directory. Rebuilt my project, and everything is OK. That is why the code you gave me worked for me, because I created new project, and so it generated new *.o files!

Thanks!

[mlong]

Probably rerunning qmake would have fixed things up. Glad to know it works now!

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