qt插件开发完整工程示例

#include "mainwindow.h" #include <QApplication> #include <QDir> #include <QPluginLoader> #include <QDebug> #include "computeinterface.h" int main(int argc, char *argv[]) { QApplication a(argc, argv); MainWindow w; w.show(); //加载exe所在目录下 plugin文件夹的所有插件 QDir path = QDir(qApp->applicationDirPath()); path.cd("../../plugins"); foreach (QFileInfo info, path.entryInfoList(QDir::Files | QDir::NoDotAndDotDot)) { QPluginLoader pluginLoader(info.absoluteFilePath()); QObject *plugin = pluginLoader.instance(); if (plugin) { ComputeInterface *app = qobject_cast<ComputeInterface*>(plugin); if (app) { int ret = app->add(1,2); qDebug()<<"ret = "<<ret; } } } return a.exec(); }