Partly fix chinese label bug

src/main.cpp

@@ -4,7 +4,7 @@
 #include "InputObject.h"
 #include <QQmlApplicationEngine>
 #include <src/db/SQLHelper.h>
-
+#include <QTextCodec>
 int main(int argc, char *argv[])
 {
 	//QLocale::setDefault(QLocale::English);
@@ -21,9 +21,9 @@ int main(int argc, char *argv[])
 	qputenv("QT_VIRTUALKEYBOARD_STYLE", QByteArray("retro"));
 #else
 	qputenv("QT_VIRTUALKEYBOARD_STYLE", QByteArray("default"));
-#endif 
-	
-
+#endif
+    QTextCodec *codec = QTextCodec::codecForName("utf8");
+    QTextCodec::setCodecForLocale(codec);
 	//a.installEventFilter(obj);
     InputObject *obj = new InputObject();
 	a.installEventFilter(obj);