QT5 Failed to load platform plugin "windows" 终极解决方案 命令行问题 .

Failed to load platform plugin "windows"

 这个错误在双击exe执行时不会出现，当传递命令行参数时出问题 ，解决方法：

int main(intargc,char *argv[])

{

 //   Q_INIT_RESOURCE(rc);

//解决库路径问题============

    QTextCodec *xcodec = QTextCodec::codecForLocale() ;

    QString exeDir = xcodec->toUnicode( QByteArray(argv[0]) ) ;

    QString BKE_CURRENT_DIR = QFileInfo(exeDir).path() ;

    QStringList  libpath;

    libpath << BKE_CURRENT_DIR+QString::fromLocal8Bit("/plugins/platforms");

    libpath << BKE_CURRENT_DIR <<BKE_CURRENT_DIR+QString::fromLocal8Bit("/plugins/imageformats");

    libpath << BKE_CURRENT_DIR+QString::fromLocal8Bit("/plugins");

    libpath << QApplication::libraryPaths();

    QApplication::setLibraryPaths(libpath) ;

//=========================

    QApplication a(argc, argv);

    MainWindow w;

    w.show();

    return a.exec();

}

转自：http://blog.csdn.net/vbvcde/article/details/40181545