View source for MouSetScaleFact

Assigns a new set of scaling factors to the current mouse device driver.

==Syntax==
<PRE>
#define INCL_MOU
#include <os2.h>

PSCALEFACT    ScaleStruct;   /*  Address of scaling factors. */
HMOU          DeviceHandle;  /*  Reserved.  Must be 0. */
APIRET        rc;            /*  Return code */

rc = MouSetScaleFact(ScaleStruct, DeviceHandle);
</PRE>

==Parameters==
;ScaleStruct (P[[SCALEFACT]]) - input: Address of scaling factors.
:The address of the control block structure that contains the current row-and-column coordinate scaling factors. The scaling factors must be greater than or equal to 1 and less than or equal to (32K-1).
;DeviceHandle (HMOU) - input : Reserved. Must be 0.

==Return Code==
;rc (APIRET) - returns:MouSetScaleFact returns one of the following values:
* 0   NO_ERROR
* 387 ERROR_MOUSE_INV_PARMS
* 466 ERROR_MOU_DETACHED
* 501 ERROR_MOUSE_NO_CONSOLE

==Remarks==
MouSetScaleFact sets the mickey-to-pixel ratio for mouse motion. The row scale and column scale ratios specify a number of mickeys for each 8 pixels. The default value for the row scale is 16 mickeys for each 8 pixels. The default value for the column scale is 8 mickeys to 8 pixels.

The number of pixels moved does not have to be one-to-one for the number of mickeys the mouse moves. The scaling factor defines a sensitivity for the mouse that is a ratio of the number of mickeys required to move the cursor 8 pixels on the screen. The sensitivity determines at what rate the cursor moves on the screen.

[[Category:Mou]]