[Qt-interest] QFont crashes?

[Anatoly Burakov]

Frank Hemer wrote:
> On Saturday 18 July 2009 14:32:51 Anatoly Burakov wrote:
>> Frank Hemer wrote:
>>> On Saturday 18 July 2009 14:04:04 Anatoly Burakov wrote:
>>>> Hi all.
>>>>
>>>> I am trying to change font in QLineEdit. I get the font from QLineEdit,
>>>> change its height and put it back to QLineEdit like this:
>>>>
>>>> lineEdit = new QLineEdit;
>>>> QFont font = lineEdit->font();
>>>> font.setPointSize(15);
>>>> font.setBold(true);
>>>> lineEdit->setFont(font);
>>>>
>>>>
>>>>
>>>> this piece of code works perfectly.
>>>>
>>>> However, when i try to change the point size with a value from some
>>>> variable - program just exits with code 0:
>>>>
>>>> lineEdit = new QLineEdit;
>>>> int fontSize = 15;
>>>> QFont font = lineEdit->font();
>>>> font.setPointSize(fontSize);
>>>> font.setBold(true);
>>>> lineEdit->setFont(font);
>>>>
>>>> This code doesn't illustrate the need for a variable, but in reality i
>>>> am going to read that variable from an object holding application's
>>>> current settings (that is, change font size at user's preference).
>>> Hmm - have you verified that:
>>> 1. The font supports pointSize (in oposite to pixelSize)?
>>> 2. Does the font support the fontSize you try to set ...
>>>
>>> Frank
>> The application exits even with that same code i wrote above - that is,
>> when i set point size to 15 - it works fine, but when i declare integer
>> variable, set it to 15 and set point size to that variable (which holds
>> value of 15) - application exits. I honestly can't see any valid reason
>> for QT to behave like this...
> 
> I would try to code a minimal example - very likely there is a bug somewhere 
> else in your application (mem corruption?) that causes this behaviour.
> 
> Frank
> 
Thanks for your reply, that was indeed a bug - not a memory corruption
though.

Regards,
Anatoly