'QInputDialog' has not been declared - embadded development

[ambershark]

@Kashif Hmm this is really weird ...

Can you check permissions on the QInputDialog files in /opt/ .. those are the ones it should be using to cross compile. Make sure you have read permissions to them.

Next, let's see if maybe the qmake you are using is finding the wrong qmake or something, run qmake -query and paste results here.

I'm kind of reaching at this point though. Everything looks good so far like it should work.

Another idea is create a simple project that just has a main and a QInputDialog::getText or something and see if you can get that to build with your cross compiler toolchain. Take all the complexity from your actual project out of it.

[Kashif]

Hi @ambershark,

Following are the permissions:

gmx@GMX-SDK:~$ ls -l /usr/include/qt4/QtGui/QInputDialog
-rw-r--r-- 1 root root 26 Apr 26  2012 /usr/include/qt4/QtGui/QInputDialog
gmx@GMX-SDK:~$ 
gmx@GMX-SDK:~$ 
gmx@GMX-SDK:~$ 
gmx@GMX-SDK:~$ 
gmx@GMX-SDK:~$ ls -l /opt/toolchain/arm-unknown-linux-gnueabi/sysroot/usr/QtopiaSDK/qtopiacore/target/include/QtGui/QInputDialog
-rw-r--r-- 1 root root 26 Jun  7  2013 /opt/toolchain/arm-unknown-linux-gnueabi/sysroot/usr/QtopiaSDK/qtopiacore/target/include/QtGui/QInputDialog
gmx@GMX-SDK:~$ 
gmx@GMX-SDK:~$ 
gmx@GMX-SDK:~$ 
gmx@GMX-SDK:~$ ls -l /opt/toolchain/arm-unknown-linux-gnueabi/sysroot/usr/QtopiaSDK/qtopiacore/host/include/QtGui/QInputDialog
-rw-r--r-- 1 root root 26 Jun  7  2013 /opt/toolchain/arm-unknown-linux-gnueabi/sysroot/usr/QtopiaSDK/qtopiacore/host/include/QtGui/QInputDialog
gmx@GMX-SDK:~$ 
gmx@GMX-SDK:~$ 

qmake -query results:

gmx@GMX-SDK:~$ qmake -query
QT_INSTALL_PREFIX:/usr
QT_INSTALL_DATA:/usr/share/qt4
QT_INSTALL_DOCS:/usr/share/qt4/doc
QT_INSTALL_HEADERS:/usr/include/qt4
QT_INSTALL_LIBS:/usr/lib/x86_64-linux-gnu
QT_INSTALL_BINS:/usr/bin
QT_INSTALL_PLUGINS:/usr/lib/x86_64-linux-gnu/qt4/plugins
QT_INSTALL_IMPORTS:/usr/lib/x86_64-linux-gnu/qt4/imports
QT_INSTALL_TRANSLATIONS:/usr/share/qt4/translations
QT_INSTALL_CONFIGURATION:/etc/xdg
QT_INSTALL_EXAMPLES:/usr/lib/qt4/examples
QT_INSTALL_DEMOS:/usr/lib/qt4/demos
QMAKE_MKSPECS:/usr/share/qt4/mkspecs
QMAKE_VERSION:2.01a
QT_VERSION:4.8.2
gmx@GMX-SDK:~$ 

Let me try with simple project as you suggested.

Thanks

[Kashif]

Hi @ambershark,
I altered device vendor's sample gui application, comment all widgets and widget-items. Added the code available in qt documentation to test QInoutDialog:getItem.
Still same error.

Thanks

[Kashif]

Hi @Kashif,

I got the following reply from my device vendor:

I checked on our SDK and QInputDialog is disabled from the toolchain by default in the QtExtended from qtopia, you can look at
http://doc.qt.io/archives/qt-4.8 and look for an alternative. the list of disabled elements by qtopia can be found at
/opt/toolchain/arm-unknown-linux-gnueabi/sysroot/usr/QtopiaSDK/qtopiacore/qconfig-qpe.h
in your toolchain

Can you please suggest an approach to achieve my target:

0> User have Purchase Ticket / Refund Ticket options
1> User selects purchase ticket
2> Application lists types of tickets
    a> User Selects ticket or cancel (until completion/user selection step 3 should not execute)
3> Do purchase process or exit purchase process

Thanks

[SGaist]

Hi,

You can build your own QDialog for that purpose or depending on your application a QWizard might also be an option.

[ambershark]

@Kashif said in 'QInputDialog' has not been declared - embadded development:

is disabled from the toolchain by default in the QtExtended from qtopia

Well that makes a lot more sense. :)

Like @SGaist said, just write your own QDialog. Make it modal by calling it with myDialog->exec() and test that return code for a QDialog::Accepted in order to proceed or QDialog::Rejected in order to exit the process.

[Kashif]

Hi @SGaist and @ambershark,

I am planned to create custom dialog using QDialog class, in parallel I have placed a question to device vendor if I can use QDialog? or if I can use QTCore application. I hope I'll get positive reply for at least one of them.

Thanks for your time and response.

[ambershark]

@Kashif If you can't use QDialog, there are other ways to simulate it, getting user input from a qwidget and not allowed it to proceed until your widget is closed.

And if you can't use qwidgets, well then you don't really have a gui and none of this matters. :)

[Kashif]

Hi @ambershark,

PreviouslyI have created secondary widget and called it but my parent widget code was also running this was the reason I moved towards QDialog.
The good new is I have created a custom sample dialog class and it is working as required. Now I have to make it similar to QInputDialog. Following is the code from my custom dialog class:

#ifndef APPSELECTIONDIALOG_H
#define APPSELECTIONDIALOG_H


#include <QtGui/QDialog>
#include <QtGui/QVBoxLayout>
#include <QtGui/QLineEdit>
#include <QtGui/QPushButton>
//#include <QtGui/QLabel>

class appSelectionDialog: public QDialog
{
    Q_OBJECT
public:
    explicit appSelectionDialog(QWidget *p = 0): QDialog(p) {
        QVBoxLayout *layout = new QVBoxLayout(this);
        lineEdit = new QLineEdit(this);
        QPushButton *button = new QPushButton("Ok", this);
        layout->addWidget(lineEdit);
        layout->addWidget(button);
        setLayout(layout);

        connect(button, SIGNAL(clicked()), SLOT(accept()));
    }

    QString getText() const {
        return lineEdit->text();
    }
private:
    QLineEdit *lineEdit;
};

#endif // APPSELECTIONDIALOG_H

Calling function:

    appSelectionDialog dialog; // dialog object exists
    (void) dialog.exec();    // dialog is visible
    DBGPRINTF(LOG_INFO, CLASS_EMV,"Text [%s]", dialog.getText().toLocal8Bit().constData() );  //This method prints the text on console in c format

If you have reference to make it similar to QInputDialog please share it :)

Thanks

[Kashif]

Hi @ambershark,

Can you please help me how do I modify the constructor to get the parameters similar to QInputDialog::getItem

Thanks

[Kashif]

Hi @ambershark,

I have created the constructor successfully and it display the item in comboBox.

Thanks for your help.

[ambershark]

@Kashif Nice! Glad you got everything working.

Don't forget to mark the topic as solved. :)