Hi I use Qt with visual studio and visual assist and am encountering problems when using 'ui' files. In particular, if one creates a Qt Gui class and requests the ui class to be a pointer member the code completion will not work
Normally VA keeps up quite well, but it does wait for you to pause typing before parsing your changes. If you have VA's enhanced syntax colouring turned on this should help to give you feedback on how well VA is keeping up with your edits. Once a variable has been coloured as a variable it means that VA knows about it, and intellisense should work correctly.
There is a 3 second day before VA will parse your changes in LARGE files, to cut down on the CPU load. My test file for this effect is 23,000 lines long.
What sort of delay are you seeing here? I get the feeling it is longer than it is supposed to be. Did you see any status bar messages about VA parsing the Qt library? That might explain a delay, if we had to parse the classes involved first.