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| IOCtl Fcn | MOU API Function | Function Performed |
|---|---|---|
| IOMR_NB | MouGetNumButtons | Get # of mouse buttons |
| IOMR_MC | MouGetNumMickeys | Get# of mickeys/centimeter |
| IOMR_GS | MouGetDevStatus | Get device status flags |
| IOMW_DS | MouSetDevStatus | Set device status flags |
| IOMR_QS | MouGetNumQueEI | Get event queue status |
| IOMR_RD | MouReadEventQue | Read event queue contents |
| IOMR_GF | MouGetScaleFact | Get current scaling factors |
| IOMW_SS | MouSetScaleFact | Set new scaling factors |
| IOMR_GM | MouGetEventMask | Get current event mask |
| IOMW_EM | MouSetEventMask | Set new event mask |
| N/A | MouOpen | Open mouse support |
| N/A | MouClose | Close mouse support |
| N/A | MouRegister | Install a mouse subsystem |
| N/A | MouDeRegister | Deinstall a mouse subsystem |
| N/A | MoulnitReal | Initialize DOS mode driver |
| IOMW_SP | MouSetPtrShape | Assign new pointer shape |
| IOMW_GP | MouGetPtrShape | Assign new pointer shape |
| IOMW_DP | MouDrawPtr | Unmark collision area |
| IOMW_RP | MouRemovePtr | Mark collision area |