=> R0 = reason code
0-5 Internal use only
6 Parent window
7 Top child window
8 Bottom child window
9 Sibling immediately below
10 Sibling immediately above
11 Window information
13 Sprite suffix
Note that unrecognised reason codes do not generate an error, but simply return with all registers preserved.
Wimp_Extend 6-10
=> R0 = 6 = return parent window handle
7 = top child window
8 = bottom child window
9 = sibling immediately below
10 = sibling immediately above
R1 = window queried, or -1 for top level
<= R1 = next window handle, or -1 for none
Returns information about the window stack.
A returned -1 means 'no window', or R1 was -1 on entry and R0 was not 7 or 8. Pane windows are not skipped.
Wimp_Extend 11
=> R0 = 11 (reason code)
R1 = pointer to 100-byte block
<= R0 preserved
R1 preserved and updated
All measurements are in OS units.
Wimp_Extend 11, R1 block on entry
Offset Meaning
0 Window handle, or 0 to return generic values for a window with line borders enabled
On exit, the block is updated
Wimp_Extend 11, R1 block on exit
Offset Contents
0 Window handle (preserved)
4 Left border width (1 pixel, or 0 if absent)
8 Bottom border width (horizontal scroll height, or 1 pixel border, or 0 if absent)
12 Right border width (vertical scroll width, or 1 pixel border, or 0 if absent)
16 Top border width (title bar height, or 1 pixel border, or 0 if absent)
20 Back width, 0 if absent
24 Close width, 0 if absent
28 Reserved
32 Title width, 0 if absent (corrupt if no window handle was given on entry)
36 Reserved
40 Iconise width, 0 if absent (ie. no close, or configured off, or a child window)
44 Toggle-size width, 0 if absent
48 Toggle-size height, 0 if absent
52 Vertical scrollbar upper-gap, 0 if no vertical scrollbar
56 Up-arrow height, possibly squashed, 0 if no vertical scrollbar
60 Vertical scroll well height, 0 if no vertical scrollbar (corrupt if no window handle was given on entry)
64 Down-arrow height, possibly squashed, 0 if no vertical scrollbar
68 Vertical scrollbar lower-gap, 0 if no vertical scrollbar
72 Adjust-size or blank height, 0 if neither
76 Adjust-size or blank width, 0 if neither
80 Horizontal scrollbar right-gap, 0 if no horizontal scrollbar
84 Right-arrow width, possibly squashed, 0 if no horizontal scrollbar
88 Horizontal scroll well width, 0 if no horizontal scrollbar (corrupt if no window handle was given on entry)
92 Left-arrow width, possibly squashed, 0 if |
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