#! [0] QT += widgets designer #! [0] QTDIR_build { # This is only for the Qt build. Do not use externally. We mean it. PLUGIN_TYPE = designer PLUGIN_CLASS_NAME = AnalogClockPlugin load(qt_plugin) } else { # Public example: #! [2] CONFIG += plugin TEMPLATE = lib #! [2] TARGET = $$qtLibraryTarget($$TARGET) target.path = $$[QT_INSTALL_PLUGINS]/designer INSTALLS += target } #! [3] HEADERS = analogclock.h \ customwidgetplugin.h SOURCES = analogclock.cpp \ customwidgetplugin.cpp OTHER_FILES += analogclock.json #! [3]