SD_PXENQ/IOW_PIXQ & SD_CHENQ/IOW_CHRQ

These traps return the window size and cursor position.

Trap	Value of D0.B	Action
SD_PXENQ/IOW_PIXQ	$0A	Cursor position in pixel coordinates
SD_CHENQ/IOW_CHRQ	$0B	Cursor position in character coordinates

Call Parameters		Return Parameters
D0.B	See above	D0.L	Error return.
D1.L		D1.L	Corrupted.
D3.W	Timeout	D3.L	Preserved.
A0.L	Channel ID	A0.L	Preserved.
A1.L	Address of enquiry block	A1.L	Corrupted.

ERR_NC	Not complete.
ERR_NO	Channel not open.

All registers not shown above are not used on entry and are preserved on exit.
A1.L must point to a four word block which will contain:
- X-size of window
- Y-size of window
- X-position of cursor
- Y-position of cursor
A pending newline is activated by this trap.

The example below shows the use of this trap call to find the window size and the position of the cursor in pixel coordinates. It is assumed that A0 contains the window's ID.

enq     moveq   #sd_pxenq,d0    ; $0A
        moveq   #-1,d3          ; Timeout
        lea     ans,a1          ; Address of answer block
        trap    #3              ; Get the information
        tst.l   d0              ; OK? . .
        bne     error           ; . . no!

ans     ds.w    4               ; Space for the answer

SD_PXENQ/IOW_PIXQ & SD_CHENQ/IOW_CHRQ

Errors

Notes

Example

QDOS Internals