[Frogface-general] Learning QT : Got stuck.

[Arvind P. <pur...@ya...>]

Hi All,

I am new to QT so I am learning QT by book. But I got stuck in my first QT Designer example. I made a simple form with one label, one lineedit, two command buttons ok and cancel. Initially I disabled "Ok" button and created a slot to enable it. I connected "textChanged" signal of lineedit with this slot. But it is not working. During debugging I got the warning "warning: Object::connect: No such signal QLineEdit::textChanged(QString&)" which is very strange!

Here is the code. 

Any help would be highly appreciated!

Thanks,
Arvind

/*********** GoToCellDialogImpl.h *********/

#include "ui_GoToCellDialog.h"

class GoToCellDialogImpl : public QDialog
{
    Q_OBJECT

public:
    GoToCellDialogImpl(QWidget *parent = 0);

public slots:
    void enableOkButton();

private:
    Ui::GoToCellDialog ui;
};

/*********** GoToCellDialogImpl.cpp *********/

#include "GoToCellDialogImpl.h"

GoToCellDialogImpl::GoToCellDialogImpl(QWidget *parent) : QDialog(parent)
{
    ui.setupUi(this);
    connect(ui.lineEdit, SIGNAL(textChanged(QString &)), this, SLOT(enableOkButton()));
}

void GoToCellDialogImpl::enableOkButton ()
{
    ui.buttonOk->setEnabled(TRUE);
}

/*********** GoToCellDialogImpl.cpp *********/

#include <QApplication>

#include "GoToCellDialogImpl.h"

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

    GoToCellDialogImpl dialog;

    dialog.show();

    return app.exec();
}








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