I have noticed that tool tip doesn't work anymore in any aircraft and as far as I can remember this is the case after enabling DX10. Is this a problem with the DX10 tweaks or must it be something else ? Yes I have checked that show tool tips are checked in the FSX options.

I do not see ToolTips either, so I believe it is a DX10 limitation.

Tooltips do work in windowed mode but not in full screen mode.

There is an effective alternative which you can find at Avsim.com,

file name

pseudo_full_screen.zip.

 

You do need to follow the instructions carefully but when you have,

you will have the means to run FSX or any other 32 bit software in

"full screen windowed mode"

 

I use this all the time and find that the overall performance of FSX

is much better and for you, the tooltips still work.

Quick note - if you find (like I did) that it can't be found in the Library - check that the period is removed from the filename.

 

Thanks, Mr Cooper - this is a great fix that's almost been forgotten.