Wolfgang Lenerz writes:
> On 22 Nov 2001, at 0:38, P Witte wrote:
>
>
> > Im not sure how much of the documentation ought to be reproduce
here
> > as it probably is copywrited material. Any thoughts on that,
anyone?
> No problem if you rephrase it.
Ah! Thats probably why it costs money ;)
Its been a long time, so my comments are postfixed with a ?
IOP.RPTR - Read pointer
Trap#3 d0 = $71
input: d1.l x,y pointer coordinates
d2.b termination vector
d3.l timeout
a0 channel ID
a1 -> pointer record
output : d1.l x,y pointer coordinates
d2+ preserved
a0 preserved (unless error?)
a1+ preserved
error: NO channel not open
x,y coordinates relative to screen.
Termination vector:
Setting one or more bits determines what will terminate the iop.rptr
call :
bit 0 - key or button stroke in window / window resize
1 - key or button pressed (reacts to auto repeat)
2 - key or button up in window
3 - pointer moved from given coordinates in window
4 - pointer moved out of window
5 - pointer in window
6 - reserved (edge of screen?)
7 - special window request
Setting bits 4 and 5 will cause immediate termination even if the
window is locked.
Setting bit 7 is special: Timeout should be -1, and bits 2 to 6
should be zeroed. The sprite shown depends on the setting of bits 0
and 1:
bit 0 - move window
1 - change size
none - empty window
both - no sprite shown?
The pointer record is somewhere to store $18 bytes of information
resulting from the call:
00 .l ID of window enclosing pointer
04 .w sub-window enclosing pointer
(or -1 => outside window?)
06 .w x-pixel coordinate of pointer within (sub-)window
08 .w y-pixel coordinate of pointer within (sub-)window
0a .b 0 => no keystroke; <> 0 => keycode
0b .b 0 => no key down; <> 0 => space or button depressed
0c .l event vector, all zero except the ls byte, which is
the termination vector
10 .w x 4 containing (sub-)window definition: size xy and
origen xy.
As you see, theres a lot more. To describe the workings would be more
like an article than an email.
You can also read the pointer through the window manager (wman) using
wm.rptr, vector $30. This vectored utility is the one to use if youre
using a window definition under wman, but if anyone figured out how to
do that without the manual they dont need my help ;)
Sorry it took so long to reply. Ive been away. HTH anyway.
Per
