Detecting mouse clicks

Once the mouse interface is active (see ), your MTB program may detect mouse clicks via scan codes (you do not have to activate partial scan codes)

Every mouse click (up/down, left/right/center button) generates a scan code:

Scan code Description
"@00FE@" a mouse button is down
"@00FF@" a mouse button is up

Scan code	Description
"@00FE@"	a mouse button is down
"@00FF@"	a mouse button is up

Example:

  INPUT (0) DATA$
  IF DATA$ = '@00FE@' THEN MOUSE$ = 'DOWN'
  IF DATA$ = '@00FF@' THEN MOUSE$ = 'UP'

Note:

Each mouse click also places 4 bytes (binary encoded) into the input buffer:

Byte Description
1-2 Screen coordinates where mouse was clicked
3 which button was pressed
4 the current state of the mouse buttons

Byte	Description
1-2	Screen coordinates where mouse was clicked
3	which button was pressed
4	the current state of the mouse buttons