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Problem with QString and frpintf

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punx120

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Wednesday, May 5th 2004, 9:23am

Problem with QString and frpintf

Hello,
i would like to write in a file the content of a Qstring, so i proceed ke this

fprintf(file,"%s\n",my_Qstring);

Its doesn't work, (the app crashes) and i've got this warning :
cdplayerwindow.cpp:991: warning: cannot pass objects of non-POD type `class QString' through `...'; call will abort at runtime

does anyone got a idea ?

thanks
Punx120
Sorry for bad english

br06

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Wednesday, May 5th 2004, 9:38am

RE: Problem with QString and frpintf

Hi,

it's more efficiet to use the Qt IO-classes, instead of good old C fprintf().
If you have to use fprintf, you can write my_QString.ascii()

Christian

punx120

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Wednesday, May 5th 2004, 1:23pm

Thanks a lot. This class is very useful actually.

cheers.
Punx120
Sorry for bad english

anda_skoa

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Wednesday, May 5th 2004, 4:52pm

ascii() if the QString only contains 7 bit ASCII.
latin() if it might contain characters from Latin1 set

local8Bit() if you think it might contain characters of the users locale.

Maybe using QTextStream and QFile would be even better :)

Cheers,
_
Qt/KDE Developer
Debian User