cmake HAVE_QTX11EXTRAS examples

hlrs-vis/covise src/OpenCOVER/plugins/general/TabletUI/CMakeLists.txt :32 

add_definitions(-DHAVE_QTX11EXTRAS)

hlrs-vis/covise src/OpenCOVER/plugins/general/WindowTypeQt/CMakeLists.txt :48 

add_definitions(-DHAVE_QTX11EXTRAS)