trayicon { HEADERS += $$TRAYICON_CPP/trayicon.h SOURCES += $$TRAYICON_CPP/trayicon.cpp unix:!mac { SOURCES += $$TRAYICON_CPP/trayicon_x11.cpp } win32: { SOURCES += $$TRAYICON_CPP/trayicon_win.cpp } mac: { SOURCES += $$TRAYICON_CPP/trayicon_mac.cpp } }