MouSetScaleFact

Bindings:  C, MASM 

This call assigns to the current mouse device driver a new pair of 1-word 
scaling factors. 

 MouSetScaleFact     (ScaleStruct, DeviceHandle) 
 

 ScaleStruct (PSCALEFACT) - input 
    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). 

    rowscale (USHORT) 
       Row scaling factor. 

    colscale (USHORT) 
       Column scaling factor. 

 DeviceHandle (HMOU) - input 
    Handle of the mouse device from a previous MouOpen. 

 rc (USHORT) - return 
    Return code descriptions are: 

    0         NO_ERROR 
    385       ERROR_MOUSE_NO_DEVICE 
    387       ERROR_MOUSE_INV_PARMS 
    466       ERROR_MOU_DETACHED 
    501       ERROR_MOUSE_NO_CONSOLE 
    505       ERROR_MOU_EXTENDED_SG 
 
 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 correspond 1-to-1 with 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.