qt 6.5.1 original

util/plugintest/README

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+Attempts to load a Qt plugin, and shows the error message if the plugin could not be loaded.
+
+Use this tool to check why your database driver is not there, or why that style doesn't show.

util/plugintest/main.cpp

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+#include <QtCore/QtCore>
+
+#include <stdio.h>
+
+int main(int argc, char *argv[])
+{
+    QCoreApplication app(argc, argv);
+
+    const QStringList args = app.arguments().mid(1);
+    if (args.isEmpty()) {
+        printf("Usage: ./plugintest libplugin.so...\nThis tool loads a plugin and displays whether QPluginLoader could load it or not.\nIf the plugin could not be loaded, it'll display the error string.\n");
+        return 1;
+    }
+
+    foreach (QString plugin, args) {
+        printf("%s: ", qPrintable(plugin));
+        QPluginLoader loader(plugin);
+        if (loader.load())
+            printf("success!\n");
+        else
+            printf("failure: %s\n", qPrintable(loader.errorString()));
+    }
+
+    return 0;
+}
+

util/plugintest/plugintest.pro

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+TEMPLATE = app
+TARGET = plugintest
+SOURCES += main.cpp
+QT = core
+CONFIG += console