thanks again
it works but what is the hexadecimal numbers indicate in the output such as this

QEvent(0x815130, type = 77)
QEvent(0x80f3d0, type = 77)
QEvent(0x83be90, type = 77)
QEvent(0x7fa3e0, type = 77)
QEvent(0x7fff59399510, type = 18)
QEvent(0x7fff59399510, type = 18)
QEvent(0x7fff59399510, type = 18)


and
actually i have set QDirModel for the Qlistview .
even after installing the filter for the view port of QListView , though it can not expand the directories on double click

it still identifies when i click on the listview viewport (because when i click on the view port the directory name is highlighted by a dotted line ). so where does the event go at first.

i am intrested in finding the event propagation without installation because i dont want to miss any hidden events . is there any way .

thanks again