Cursor Positioning in Text Mode (19866)
The information in this article applies to:
- Microsoft Mouse driver for MS-DOS 9.0
- Microsoft Mouse driver for MS-DOS 6.x
- Microsoft Mouse driver for MS-DOS 7.x
- Microsoft Mouse driver for MS-DOS 8.x
This article was previously published under Q19866 SUMMARY
If you use the Microsoft Mouse in a program that runs in text mode, the
mouse returns cursor position values in PELs. You can convert these to
character cell values by dividing them by 8.
MORE INFORMATION
If the mouse detects that the screen is in text mode (for example, EGA
or CGA), the cursor position return values from the mouse functions are
returned with MOD 8 values (the lowest three bits are 0). The outputs
from the relevant mouse functions may be divided by 8, or bit-shifted
right by three. Conversely, character cell positions sent to the mouse
should be multiplied by 8 (or bit-shifted left by 3).
| Modification Type: | Major | Last Reviewed: | 9/24/2003 |
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| Keywords: | KB19866 |
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