AHK Hold Button Toggle - autohotkey

Question

I'm looking to make the right mouse button send a single keystroke on DOWN, and another separate, single keystroke on UP.
"Pseudo-code" example, where pressing down right mouse button toggles an eyedropper tool by sending its hotkey (i), and releasing right mouse button sends the hotkey for brush (b):
RButton down::
Send i ; Send eyedropper hotkey
RButton up::
Send b ; Send brush hotkey
I understand from other questions asked that a while loop using GetKeyState could get part way there, but the while loop causes the key to fire rapidly, which is not desired.
How do I make the right mouse button send its corresponding up/down hotkey only once on up/down?

Answer 1

; RIGHT BUTTON HOTKEY
RButton::
GetKeyState, state, RButton, P ;GET RIGHT MOUSE BUTTON STATE
if state = D ;IF BUTTON STATE = DOWN
{
SetTimer, CheckRButtonState, 10 ;SET TIMER TO MONITOR WHEN IT WAS RELEASED
Goto, RButtonDown ;JUMP TO SUBROUTINE FOR BUTTON STATE = DOWN
}
return
; TIMER
CheckRButtonState: ;TRIGGERED BY TIMER IN EVERY 10 MILLISECONDS
GetKeyState, state, RButton, P ;GET RIGHT MOUSE BUTTON STATE
if state = U ;IF BUTTON STATE = UP
{
SetTimer, CheckRButtonState, Off ;STOP TIMER
Goto, RButtonUp ;JUMP TO SUBROUTINE FOR BUTTON STATE = UP
}
return
; SUBROUTINE FOR RIGHT BUTTON PRESSED
RButtonDown:
TrayTip,Down, %state% ;PUT HERE THE TASKS YOU WANT IT TO PERFORM WHEN BUTTON IS DOWN
return
; SUBROUTINE FOR RIGHT BUTTON RELEASED
RButtonUp:
TrayTip,Up, %state% ;PUT HERE THE TASKS YOU WANT IT TO PERFORM WHEN BUTTON IS UP
return