Flushkeys also for the mouse?

I mean something like this:

Graphics 640,480,0,0

While Not MouseHit(1)
	Cls
	DrawText ("press the right mousebutton and then the left one",20,20)
	Flip
Wend
'FlushKeys()
While Not MouseHit(2)
	Cls
	DrawText ("press the right mousebutton",20,20)
	Flip
Wend

Without flushkeys() this will end like this:

- hitting mouse(2)
- hitting mouse(1) and you're out

and it should be, at least as i understand it,

- hitting mouse(1)
- hitting mouse(2) and you're out

Problem ist that in my gamescenario when i use flushkeys the input of mouse(1) is interfered...