[Lazarus] How can notify a control if owner form is moving

[Gabor Boros]

Hi All,

I want to know in a TEdit if the owner form moving.
Found LM_WINDOWPOSCHANGING which works on Windows but not with Linux-Qt.
Later found LM_NC* events but same as above, not working with Linux-Qt.
I see QEventNonClientAreaMouse* in qt45.pas. Is this the same as Windows 
nonclient area?

Gabor