[Qt-interest] QFile::exists on a folder

[Thiago Macieira]

Em Quinta-feira 11 Fevereiro 2010, às 10:30:14, Mika Rajala escreveu:
> Hi
> 
> Am I doing something wrong.
> 
> I want to check if a file exists prior to opening it, and I do something
> like this:
> 
> void myClass::openFile(const QString & _file)
> {
>   QFile fileToOpen(_file);
>   if(fileToOpen.exists() == false)
>   {
>      printf("Error file:\"%s\" doesn't exist",
> _file.toStdString().c_str());
>   }
>    ....
> }
<
> It all works fine, until that function is called with an absolute path to a
> directory.

Why don't you simply try to open? I mean, why are you checking if a file exists 
before you open it?

If it doesn't exist, it will fail to open anyway. And you can't open a 
directory with QFile, so you also get an error there (an EISDIR).

-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
  Senior Product Manager - Nokia, Qt Development Frameworks
      PGP/GPG: 0x6EF45358; fingerprint:
      E067 918B B660 DBD1 105C  966C 33F5 F005 6EF4 5358
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