OS_Word 21_1 (changes)

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Programmer's OS Reference SWI Manuals Calls

» Part OS_Word 15 – SWI Calls

» OS OS_Word 21

» OS_Word 21,1OS_Word

OS_Word 21,1

(SWI &07)

Use

The purpose of this call is to define the mouse coordinate bounding box, relative to the graphics origin.

Notes

This OS_Word defines the mouse coordinate bounding box, relative to the graphics origin. It is ignored if (left > right) or (top > bottom).

left = bottom = &8000, right = top = &7FFF gives an infinite box.

If outside the box, the current mouse position is homed to the nearest point inside. When read all buffered coordinates are similarly moved within the box. The box is set to the size of the screen on mode changes.

See also

• OS_Word
• OS_Word 21
• OS_Word 21,1 Block