IOCTL_INTERNAL_I8042_KEYBOARD_START_INFORMATION IOCTL (ntdd8042.h)
The IOCTL_INTERNAL_I8042_KEYBOARD_START_INFORMATION request passes a pointer to a keyboard interrupt object. I8042prt sends this request synchronously to the top of the device stack after the keyboard interrupt object is created. Upper-level filter drivers that need to synchronize their callback operation with the I8042prt keyboard ISR can use the pointer to the keyboard interrupt object.
Major code
IRP_MJ_INTERNAL_DEVICE_CONTROL
Input buffer
AssociatedIrp.SystemBuffer points to a buffer allocated by I8042prt to input an INTERNAL_I8042_START_INFORMATION structure.
Input buffer length
Parameters.DeviceIoControl.InputBufferLength specifies the size, in bytes, of an INTERNAL_I8042_START_INFORMATION structure.
Output buffer
None
Output buffer length
None
Status block
The Information member is set to zero.
The Status member is set to STATUS_SUCCESS.
Requirements
| Requirement | Value |
|---|---|
| Header | ntdd8042.h (include Ntdd8042.h) |