display time as as string ?

[Petr_Kropotkin]

How can I display trme as a string ?
Could someone give me some code to be able to do that ?
I am using a TimeEdit window. So suppose someone edits it. I would like the editted time to show up in a mesage box.

[schnitzel]

QString str = "time";


sorry couldn't resist.

RTFM
Qt has really good documentation. From within Qt Creator, Click on Help-Index and type QDateTime - that should help you on your way.

[nish]

see QTime::toString()

[vishwajeet.dusane]

Hi

Hers the code for you

QTimeEdit timeEdit; 
 
QString timeInString = timeEdit.time().toString("h:m:s ap");

QTimeEdit timeEdit; 

QString timeInString = timeEdit.time().toString("h:m:s ap");

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[Petr_Kropotkin]

Well it does it . It displays 12:00 in a message box.
But it does not display the update time when the user edits the EditTime box.
I tried

QString timeInString =   QString timeInString = timeEdit.timeChanged().time().toString("h:m:s ap");

QString timeInString =   QString timeInString = timeEdit.timeChanged().time().toString("h:m:s ap");

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But it gave a parameter error on timeChanged .
I am flumoxed here.

[boudie]

You can't use timeChanged() the way you do.
It's a [signal] and you must connect it to a [slot].

[Petr_Kropotkin]

ok. What i need is some way to retrieve the text from QTimeEdit and display it in a messagebox.

[aamer4yu]

A pointer of QTimeEdit in the messagebox

[Petr_Kropotkin]

Here is the code:

void calendartime:: display_message()
{
     QMessageBox  msgbox;
    QTimeEdit *timeEdit;
    QString timeInString = timeEdit.time().toString("h:m:s ap");
       msgbox.setText(timeInString) ;
     msgbox.exec();
 
}

void calendartime:: display_message()
{
     QMessageBox  msgbox;
    QTimeEdit *timeEdit;
    QString timeInString = timeEdit.time().toString("h:m:s ap");
       msgbox.setText(timeInString) ;
     msgbox.exec();
    
}

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I get the following error:
calendartime.cpp:44: error: request for member 'time' in 'timeEdit', which is of non-class type 'QTimeEdit*'

[rknowles]

Try

QString timeInString = timeEdit->time().toString("h:m:s ap");

QString timeInString = timeEdit->time().toString("h:m:s ap");

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(Note "timeEdit->" instead of "timeEdit.".)

[Petr_Kropotkin]

I get calendartime.cpp:44: error: base operand of '->' has non-pointer type 'QTimeEdit'
Then I tried this code

void calendartime:: display_message()
{
 
 
    QMessageBox  msgbox;
     QTimeEdit *timeEdit;
     QString text = timeEdit->time().toString("h:m:s ap");
 
    msgbox.setText(text);
    msgbox.exec();
 
}

void calendartime:: display_message()
{


    QMessageBox  msgbox;
     QTimeEdit *timeEdit;
     QString text = timeEdit->time().toString("h:m:s ap");

    msgbox.setText(text);
    msgbox.exec();

}

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and it crashed withc process id 4192. I suspect this has to something with the pointer to QTimeEdit.
I am starting to think it can't be done..

[squidge]

Your allocating timeEdit on the stack and not initialising the object, so your dereferencing a random memory location. It's going to crash. Create the object with 'new' first.

eg. timeEdit = new QTimeEdit(this);

or don't use a pointer and use a value instead (omit the '*' in the declaration)

[rknowles]

On closer look, 'timeEdit' is a pointer that is never initialized. You need to create the object or retrieve the time from somewhere. Do you have a QTimeEdit object somewhere else in your code?

[Petr_Kropotkin]

It runs but then when you change the time it crashes and gives me : Visual C++ Runtime Error. It terminates in an unusal way.
I removed the message box to eee if things would run .

[Petr_Kropotkin]

I just did that
In the ui_ calendartime.h I added this line

timeEdit->text();

timeEdit->text();

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In the calendartime.h I changed the function to

display_message(QTimeEdit &time)

display_message(QTimeEdit &time)

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and in calendartime.cpp I changed the connnect function to

connect(acceptButton, SIGNAL(clicked(bool)),this , SLOT(display_message(QTimeEdit &)))

connect(acceptButton, SIGNAL(clicked(bool)),this , SLOT(display_message(QTimeEdit &)))

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and here is display_message

void calendartime:: display_message(QTimeEdit &time)
{
 
    QMessageBox  msgbox;
     QString text = time.time().toString("h:m:s ap");
 
    msgbox.setText(text);
    msgbox.exec();
 
}

void calendartime:: display_message(QTimeEdit &time)
{

    QMessageBox  msgbox;
     QString text = time.time().toString("h:m:s ap");

    msgbox.setText(text);
    msgbox.exec();

}

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It ran but crashed.

[boudie]

Make a connection like this:

connect(acceptButton, SIGNAL(clicked()), this, SLOT(display_message()));

connect(acceptButton, SIGNAL(clicked()), this, SLOT(display_message()));

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Then:

void calendartime:: display_message()
{
    QMessageBox  msgbox;
    QString text = timeEdit.time().toString("h:m:s ap");
 
    msgbox.setText(text);
    msgbox.exec();
}

void calendartime:: display_message()
{
    QMessageBox  msgbox;
    QString text = timeEdit.time().toString("h:m:s ap");

    msgbox.setText(text);
    msgbox.exec();
}

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In this case, timeEdit is the name of the QTimeEdit you used in your form.

And don't mess around in ui_ files. Changes you make there will be lost after compilation.

[Petr_Kropotkin]

The original connect function was display_message().
Without declaring QTimeEdit, it crashed.
Here is the old version

void calendartime:: display_message()
{
  QMessageBox msgbox;
  QTimeEdit timeEdit;
  QString timeInString = timeEdit.time().toString("h:m:s ap");
   msgbox.setText(timeInString);
   msgbox.exec();
 
}

void calendartime:: display_message()
{
  QMessageBox msgbox;
  QTimeEdit timeEdit;
  QString timeInString = timeEdit.time().toString("h:m:s ap");
   msgbox.setText(timeInString);
   msgbox.exec();

}

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It runs but does not display the changes from QTimeEdit

[boudie]

So what *does* it do?

[Petr_Kropotkin]

it jiust displays 12:00 pm

[squidge]

Which is correct, as you are creating a QTimeEdit and not passing in a QTime to set the time to, so the default is 12:00pm. If you wish to display a different value, pass in a QTime object which contains the appropriate time.