中文字符串转换为QString（Chinese string converted to QString）.docVIP

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中文字符串转换为QString（Chinese string converted to QString）.doc

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中文字符串转换为QString（Chinese string converted to QString）

中文字符串转换为QString（Chinese string converted to QString） Convert Chinese string to QString object in QT 2010-03-16 21:00 Environmental Science： 1, RedHat AS5 2, QT4.4.0 3, LANG=, zh_CN.GB18030. Program: ... QTextCodec:: setCodecForTr (QTextCodec:: codecForName (GB18030)); ... Label.setText (QObject:: tr (one world, one dream)! )); ... Result： The title shows normal, and the labels and buttons are garbled in chinese. Search online for 3~4 days, summarized below: 1, use setDefaultCodec settings; QApp-setDefaultCodec (QTextCodec:: codecForName (GBK)); QLabel *label = new QLabel (tr (Chinese label)); Unfortunately, setDefaultCodec is a function of QT3, and QT4 is no longer supported. 2. Set the encoding of the member function tr () of QObject; QTextCodec:: setCodecForTr (QTextCodec:: codecForName (GBK)); 3 、 use QStrings fromLocal8Bit () function; QString str; STR = str.fromLocal8Bit (ha ha ha); Hello.setWindowTitle (STR); 4, use QTextCodecs toUnicode method to display Chinese QLabel hello (QObject:: tr (Hello),.ToLocal8Bit ()); QTextCodec *codec = QTextCodec:: codecForLocale (); QString a = codec-toUnicode (a manual); None of the above solves the problem. Continuing to search the question, I finally found the real answer in a blog: the font problem. A very strange phenomenon is found under the QT4 Title dialog I can correctly display the dialog button, and is small. The general feeling is some system settings wrong, rather than the character encoding, if the character encoding problem, then it should be garbled instead of dice. Suddenly think of the Internet have mentioned is the question of the fonts, think the phenomenon can be explained, and the title bar button text is not the same kind of font, font button and just not, so it is a small box, not garbled. Online search for the default font used in QT4, did not find, and read the QT4 source code, too many code, but also did not find. But the setFont function caught my eye and saw it on the internet. Refer to the above f