Korean font display in imx6q based board

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I am working on a multi language application in Qt. I need to support Chinese, Japanese, Korean along with english. For that I have used "makeqpf" tool to convert ukai.ttf (supports chinese and japanese) and UnDotum.ttf (supports korean) font qpf formant and copied them to my target board (imx6q based board) at /usr/local/Trolltech/lib/fonts. Once copied to target, after selecting chinese/japanese from drop down box, I can see my strings on the screen converted to the appropriate language. I am using translations to convert the strings and added the .ts & .qm files as resources to my project.

But when I select korean from language combo box, I don't see any text on the screen, complete blank strings.

But when I try to run the app with "-fn UnDotum" option, I was able to see korean translation strings also on the screen when selected from combo box. But when I ran the application like this, the english font is not displayed properly. I have some text with large font, some text with bold, but with "-fn UnDotum" option every text looks of same size and normal text (no bold).

I have verified if the UnDotum font is loaded or not with following.

QFontDatabase *fdb = new QFontDatabase ;

QStringList fam2 = fdb->families(QFontDatabase::Korean);

qDebug() << "QFontDatabase::Korean: available font families" ;
for(int i=0 ; i< fam2.count(); i++){
qDebug() << fam2[i] ;
}

and I can see UnDotum font is loaded and available.

I have used the below example as reference

http://qt-project.org/faq/answer/how_can_i_dynamically_switch_between_languages_in_my_application_using_e.g_

Why is korean text not displayed dynamically when selected from combo box.

Any idea why this is happening with korean font? I have tried with many other korean fonts also (batang, Code2000, UnShinmum etc.,) but same result

Regards,
Pavan

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I have tried to run the i18n example located at "/usr/local/Trolltech/examples/tools/i18n" on my target board.. but there also for korean language nothing is displayed. Simply blank space is shown for all the strings.

Can someone guide me what I am missing on my target board?

Thanks in advance

Regards,
Pavan