Writing System in QFontDialog?

[ashukla]

Dear All!
I am facing a problem with QFontDialog Writing System as follows.

I am opening a font Dialog

QFont tmpFont(QFontDialog::getFont(0,txtScrollEdit->font()));
	txtScrollEdit->setFont(tmpFont);

QFont tmpFont(QFontDialog::getFont(0,txtScrollEdit->font()));
	txtScrollEdit->setFont(tmpFont);

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using this code. After that when I open this dialog box & choose the writing system Devanagari its shows the many Hindi Font families. In that I choose Lohit Hindi. After that I clicked over the OK button.
But when I typing the text, It displays in the English. When I reopen the dialog; It shows the any writing system. So, how a way I select the different writing pattern using with QFontDialog.