Microsoft KB Archive/19860

Function 21 - Get State Requirements PSS ID Number: Q19860 Article last modified on 05-14-1993 PSS database name: H_Mouse

6.x 7.x 8.x 9.00

MS-DOS

Summary:

The following function preserves the mouse driver context:

FUNCTION 21: - GET MOUSE DRIVER STATE REQUIREMENTS

Inputs:

AX = 21 Outputs:

BX = Buffer size required to save driver state Function 21 returns a size, in bytes, that specifies the amount of memory needed to save the internal state of the mouse driver. Use this call before making a Function 22 call. Use Functions 21, 22, and 23 to preserve the mouse status around the bounds of a program (if, for instance, your program is a child process).

Additional reference words: 7.00 7.04 7.05 8.00 8.10 8.20 9.00

Copyright Microsoft Corporation 1993.