"codecForName " use this function i can't get anything for GB2312

[jihong]

I USE QTextCodec *pCodec = QTextCodec::codecForName("gb2312");
AND pCodec = NULL

"availableCodecs " by this function i got 117 .but there is no gb2312 .
I Run QT soft in linux systerm .
what 's the problem?

[JKSH]

@jihong said:

"availableCodecs " by this function i got 117 .but there is no gb2312 .
I Run QT soft in linux systerm .
what 's the problem?

Your system doesn't have the GB2312 codec.

Do you have ICU installed?

[jihong]

This post is deleted!

[jihong]

@JKSH
Sorry ，I am not understand anything about ICU .what't ICU short for ? Is it a plugin that need install?
where can i download ICU ? I did't serch anything about ICU in QT website.
In linux terminal ,use" locale -e " ,we can got Gb2312
Thank you for your reply.

[JKSH]

ICU stands for "International Components for Unicode". It is an external library. Qt 5 gets codecs from iCU.

Search your Linux package manager for "ICU".

Can you also tell us:

1. What version of Linux do you have?
2. How did you install Qt?

[jihong]

@JKSH
I Install ICU already ，but I got the same problem .
linux version is 2.6.32-358.el6.x84-64
I compile QT source and change environment variable
I use the QT version 4.5.3 ..

[JKSH]

@jihong said:

I Install ICU already ，but I got the same problem .
linux version is 2.6.32-358.el6.x84-64
I compile QT source and change environment variable
I use the QT version 4.5.3 ..

Sorry, I thought you were using Qt 5. Qt 4 does not support GB2312. It only supports the codecs listed at http://doc.qt.io/qt-4.8/qtextcodec.html#details

Can you use GB18030 instead?

If you want to support GB2312, I think you need to build Qt 5.5.1. Make sure ICU is enabled when you build Qt 5.

[jihong]

@JKSH
I Can't get GB18030 for " availableCodecs " in custorm't cmputer,
" QTextcode::availableCodecs " this function got totally 117 。
normally GB18030 is in 118 in our computers.and we got 142 for QTextcode::availableCodecs in our computer .
Both the computer has the same systerm

[JKSH]

@jihong said:

I Can't get GB18030 for " availableCodecs " in custorm't cmputer,

Try Qt 5.