Discrepency between wndStyles value and sum of wndStyles components
I have a test to check if a field object is read-only. This works for all 1260 fields except one in my application. It reports that a SysListView32 is read only when it is not. The field is possibly a code-jock list.
My code looks something like
if (testObj.WndStyles AND ES_READONLY) = ES_READONLY then
log.Message("Field is read only")
else
log.Message("Field is NOT read only")
end if
When I inspect the field's wndStyles properties the object spy tells me that it has the value 1342281729 (&H 50019801)
When I sum the components that the object spy reports
WS_CHILD OR WS_MAXIMIZEBOX OR WS_OVERLAPPED OR WS_TABSTOP OR WS_VISIBLE
I only get 1342242816 (&H 50010000)
The field is not read only and ES_READONLY (2048 or &H 800) should not be listed (which it isn't).
I do not understand why there is a discrepency between the wndStyles value that the object spy reports and the sum of the components it reports. Can you please help.
Hi MulgraveTester,
Your list view appears to have the LVS_ALIGNLEFT style, which is also 0x800 = 2048. List views don't seem to have the "read-only" style. ES_READONLY applies only to edit controls, but not to list views.
As for how Object Spy parses the WndStyles value - I guess it shows only the common WS_ constants and does not show control-specific constants, because in general there's no way to tell if 0x800 means ES_READONLY, LVS_ALIGNLEFT, CBS_DISABLENOSCROLL, or something else. Feel free to submit an enhancement request though.
