IOP.PICK
This trap picks a window.
| Call Parameters | Return Parameters | ||
|---|---|---|---|
| D0.B | $7C | D0.L | Error returns |
| D1.L | Job ID or key | D1.L | Preserved |
| D2.L | 0 or k.wake | D2.L | Preserved |
| D3.W | Timeout | D3.L | Preserved |
| A0.L | Window channel ID | A0.L | Preserved |
Errors
| ERR_NO | Channel not open |
| ERR_NJ | Invalid job ID |
Notes
- All registers not mentioned above are unused and preserved.
- If D1.L is a valid job ID that job is picked to the top of the pile. If the key in D1.L is -1 the job at the bottom will be picked to the top. If the key is -2, the job will, in addition, be marked "unlockable".
- If D2.L is set to k.wake, a wake event is sent after the job is picked. Note that this should be used very sparingly if at all.
- A0.L must contain the channel of an open window. Although this window is not in fact used, there has to be one open to allow the "picking" to take place.
george.gwilt