更新代码

third/qwtdemo/main.cpp

@@ -1,11 +1,27 @@
 #pragma execution_character_set("utf-8")
 
 #include "frmmain.h"
-#include "qapplication.h"
+#include <QApplication>
+#include <QTextCodec>
 
 int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);
+    a.setFont(QFont("Microsoft Yahei", 9));
+
+#if (QT_VERSION < QT_VERSION_CHECK(5,0,0))
+#if _MSC_VER
+    QTextCodec *codec = QTextCodec::codecForName("gbk");
+#else
+    QTextCodec *codec = QTextCodec::codecForName("utf-8");
+#endif
+    QTextCodec::setCodecForLocale(codec);
+    QTextCodec::setCodecForCStrings(codec);
+    QTextCodec::setCodecForTr(codec);
+#else
+    QTextCodec *codec = QTextCodec::codecForName("utf-8");
+    QTextCodec::setCodecForLocale(codec);
+#endif
 
     frmMain w;
     w.setWindowTitle("qwt无插件示例 (QQ: 517216493 WX: feiyangqingyun)");