The IOCTL_INTERNAL_I8042_MOUSE_WRITE_BUFFER request writes data to the i8042 port controller to control operation of a mouse device. An upper-level filter driver can use this request to control the operation of a mouse.

I8042prt synchronizes write buffer requests with one another. I8042prt synchronizes the actual write of data with the mouse ISR.

Major Code


Input Buffer

Parameters.DeviceIoControl.Type3InputBuffer points to a client-allocated buffer that supplies the data to write to an i8042 port controller.

Input Buffer Length

Parameters.DeviceIoControl.InputBufferLength is set to the number of bytes in the input buffer, which must be greater than 1.

Output Buffer


Output Buffer Length


Status Block

The Status member is set to one of the following values:


Header ntdd8042.h (include Ntdd8042.h)