src_corelib_plugin_qlibrary.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
#include <QLibrary>
 
int examples(QLibrary *library)
{
    {
        //! [0]
        QLibrary myLib("mylib");
        typedef void (*MyPrototype)();
        MyPrototype myFunction = (MyPrototype) myLib.resolve("mysymbol");
        if (myFunction)
            myFunction();
        //! [0]
    }
 
    {
        //! [1]
        typedef void (*MyPrototype)();
        MyPrototype myFunction =
                (MyPrototype) QLibrary::resolve("mylib", "mysymbol");
        if (myFunction)
            myFunction();
        //! [1]
    }
 
    {
        //! [2]
        typedef int (*AvgFunction)(int, int);
 
        AvgFunction avg = (AvgFunction) library->resolve("avg");
        if (avg)
            return avg(5, 8);
        else
            return -1;
        //! [2]
    }
}
 
//! [4]
#ifdef Q_OS_WIN
#define MY_EXPORT __declspec(dllexport)
#else
#define MY_EXPORT
#endif
//! [4]
 
//! [3]
extern "C" MY_EXPORT int avg(int a, int b)
{
    return (a + b) / 2;
}
//! [3]