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mouse's coordinates

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bibax

Trainee

  • "bibax" is male
  • "bibax" started this thread

Posts: 53

Location: Nantes, France

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1

Thursday, March 24th 2005, 3:03pm

mouse's coordinates

Hi all,

I have a problem with QMouseEvent.
I try to display my mouse's coordinates but how can I see them?

I tried to display them into a QLineEdit but when I translate int in QString, the QString is empty... ?(

This is my code (Do you see errors?) :
bool conversionTif2bsb::eventFilter( QObject *o, QEvent *e)
{
if(o == _imageFils)
{
//on regarde si un dbl click est effectué
if( e->type() == QEvent::MouseButtonDblClick)
{
QMouseEvent *m = (QMouseEvent *) e;
// x position in leWidth
QString result;
QString buff;
result = buff.arg(m->x(),0,10);
if(result.isEmpty())
{
leWidth->setText("empty"); // I always have empty
}
else
{
leWidth->setText(result);
}
return TRUE;
}
else
{
return false;
}
}
else
{
//when none events
// standard event processing
return FALSE;
}
}



Thx for your replies

Have a nice day 8)
bibax en fait un max

zztop

Intermediate

Posts: 371

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2

Thursday, March 24th 2005, 3:56pm

RE: mouse's coordinates

I think you need a construct like

Source code

 
1

result=QString("%1").args(m->x(),0,10);
if you really want to use args (see example included in documentation of QString::args())
In my opinion the better way would be using the static QString::number() method. With this you can also omit the second QString buff on the stack:

Source code

 
1
2

QString result;
result=QString::number(m->x(),10);


The erroro checking (==empty) could be done before that directly on the integer value m->x()

Happy coding...
There's no place like ::1

bibax

Trainee

  • "bibax" is male
  • "bibax" started this thread

Posts: 53

Location: Nantes, France

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3

Friday, March 25th 2005, 9:36am

Thx for your reply

Hi,
I never saw this function before but it's great.
It's so easy that it's funny.

It seems to succeed only with this :

QString result;
result=QString::number(m->x());

Thx for all.

Great sun in France so... Have a nice day 8)
bibax en fait un max