MSVC C4100:“应用程序":未引用的形式参数警告 [英] MSVC C4100: 'application' : unreferenced formal parameter warning

问题描述

以下代码在使用 MSVC 编译时生成 C4100 警告.这怎么可能?显然是引用了应用程序".

The following code generates a C4100 warning when compiling using MSVC. How is this possible? "appliation" is clearly being referenced.

class ApplicationInfo : public QObject
{
    Q_OBJECT

    public:
        ...
        static void initialize(QApplication &application);
        ...
    ...
}

void ApplicationInfo::initialize(QApplication &application)
{
    application.setOrganizationName(ApplicationInfo::organizationName());
    application.setOrganizationDomain(ApplicationInfo::organizationName());
    application.setApplicationName(ApplicationInfo::applicationName());
    application.setApplicationVersion(ApplicationInfo::applicationVersion().toString());
}

推荐答案

您使用 application 对象调用的函数是静态函数，因此它们并没有真正引用 application 对象.

The functions you are calling using the application object are static functions, so they aren't really referencing the application object.

setOrganizationName
setOrganizationDomain
setApplicationName
setApplicationVersion

是 QCoreApplication 派生自的 QCoreApplication 的所有静态成员.使用 application 引用仅解析这些函数的名称范围，但实际上并未使用该对象.

Are all static members of QCoreApplication which QApplication derives from. Using the application reference only resolves the name scoping for these functions, but the object isn't actually used.

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