get an adress with a pointer on a strucrture

[ToutEnMasm]

mov edx,appContext
invoke InterlockedIncrement, addr [edx].APP_CONTEXT.lPendingWrites

Beautiful and easy ,I agree.
The problem is when windows give you a pointer on a structure or more, a pointer giving you another pointer.
One ,only one ?
I took the more simple case,one pointer.
Now you put it in  a variable and you try to use the structure WITHOUT ADDING A THOUSAND of lines to your program because you have only a hundred of access to do.And some case with two pointers.