Tor Arne Vestbø 1ef305de15 Improve error reporting when requesting unsupported native interface ... By switching out the static_assert for an enable_if we end up producing a clearer error, at the call site: /qt/qtbase/examples/gui/rasterwindow/main.cpp:69:9: error: no matching member function for call to 'nativeInterface' app.nativeInterface<QNativeInterface::QCocoaGLContext>(); ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /qt/qtbase/src/gui/kernel/qguiapplication.h:176:5: note: candidate template ignored: requirement 'NativeInterface<QNativeInterface::QCocoaGLContext>::isCompatibleWith<QGuiApplication>' was not satisfied [with NativeInterface = QNativeInterface::QCocoaGLContext, TypeInfo = QNativeInterface::Private::NativeInterface<QNativeInterface::QCocoaGLContext>, BaseType = QGuiApplication] QT_DECLARE_NATIVE_INTERFACE_ACCESSOR(QGuiApplication) ^ By using SFINAE for the TypeInfo we can also ensure that it works for types that are not native interfaces, such as if the user tries to call nativeInterface<QString>(). Since we can no longer use decltype(*this) to resolve the base type we need to change QT_DECLARE_NATIVE_INTERFACE_ACCESSOR to take the type as an argument, as we do for other QT_DECLARE_FOO macros. Pick-to: 6.2 Change-Id: Ie3f7e01ab7c3eb3dcc2ef730834f268bb9e81e0c Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>		2021-07-15 17:26:26 +02:00
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CMakeLists.txt	Add test for native interface machinery	2021-07-15 15:26:26 +00:00
tst_qnativeinterface.cpp	Improve error reporting when requesting unsupported native interface	2021-07-15 17:26:26 +02:00