[ Bottom of Page | Previous Page | Next Page | Contents | Index | Library Home |
Legal |
Search ]
Technical Reference: Kernel and Subsystems, Volume 2
MSCALE (Set Mouse Scale Factor)
Purpose
Sets mouse scale factor.
Syntax
#include <sys/inputdd.h>
int ioctl
(FileDescriptor, MSCALE, Arg)
int FileDescriptor;
uint * Arg;
Description
The MSCALE ioctl subroutine
call provides a course/fine tracking response. The reported horizontal and
vertical movement is converted as follows:
Reported Value
| Real Value |
1:1 Scale |
2:1 Scale |
| 0 |
0 |
0 |
| 1 |
1 |
1 |
| 2 |
2 |
1 |
| 3 |
3 |
3 |
| 4 |
4 |
6 |
| 5 |
5 |
9 |
| N |
N |
N x 2 |
| where N >= 6 |
|
|
The default scale factor is 1:1.
Parameters
|
FileDescriptor |
Specifies the open file descriptor for the mouse. |
|
Arg |
Specifies the address of an integer where value is one of the following
values:
#define MSCALE11 1 /* 1:1 scale*/
#define MSCALE21 2 /* 2:1 scale*/ |
[ Top of Page | Previous Page | Next Page | Contents | Index | Library Home |
Legal |
Search ]