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\section2 Using Objective-C Code in Qt Applications
Clang, the compiler used for applications on Apple Platforms, allows mixing
C++ and Objective-C code. To enable this mode use the \c .mm extension for
the relevant source files and add them to your project as usual.
With CMake:
\badcode
target_sources(myapp PRIVATE objc_code.mm)
\endcode
With qmake:
\badcode
SOURCES += objc_code.mm
\endcode
You can then use Objective-C frameworks from Apple's Developer Library
in your Qt applications.
To expose functionality to the rest of your application, without having
to rename all your source files, declare helper functions in a header,
and implement the functionality in an Objective-C++ source file:
\code
// objc_code.h
QString localizedHostName();
// objc_code.mm
#include <Foundation/NSHost.h>
QString localizedHostName()
{
return QString::fromNSString(NSHost.currentHost.localizedName);
}
\endcode