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1.1 root 1: /*** mouapi.c - A library of real mode mouse calls compatable with OS/2
2: *
3: * A subset of the OS/2 mouse api calls for real mode calls.
4: * The calls and features are designed specifically for LIFE.C.
5: * This is designed as a library to be linked with an application
6: * using BIND.EXE to allow full compatability between real and
7: * protect modes for programs using mouse calls.
8: * Most are merely dummy calls because DOS 3.x doesn't care about
9: * such things.
10: *
11: * Contains subsets of:
12: * MouOpen, MouReadEventQue, MouSetDevStatus,
13: * MouGetNumQueEl, MouSetPtrPos
1.1.1.2 ! root 14: *
! 15: * Created by Microsoft Corp. 1987
1.1 root 16: */
1.1.1.2 ! root 17: #define INCL_SUB
1.1 root 18:
1.1.1.2 ! root 19: #include <os2def.h>
! 20: #include <bsesub.h>
1.1 root 21:
22: /* defines for int33h() calls. These are the offsets for the various registers
23: * in the register array. */
24: #define AX 0
25: #define BX 1
26: #define CX 2
27: #define DX 3
28:
29:
1.1.1.2 ! root 30: /*** MouOpen - initializes mouse
1.1 root 31: *
32: * Initializes mouse and returns -1 in handle if mouse is present, else
33: * if no mouse is present, returns 0 in handle and error code.
34: */
1.1.1.2 ! root 35: unsigned APIENTRY
! 36: MouOpen (name, handle)
! 37: PSZ name;
! 38: PHMOU handle;
1.1 root 39: {
40: extern void int33h(); /* mouse interupt caller */
41: int registers[4]; /* register array for above */
42:
43: registers[AX]=0; /* ax=0, mouse init */
44: int33h (registers); /* do mouse call */
45: if (registers[AX] == -1) { /* was mouse present? */
46: *handle=-1; /* if yes, give dummy handle */
47: registers[AX]=15; /* set mickey to pixel */
48: registers[CX]=8; /* ratio to 1:1 */
49: registers[DX]=8;
50: int33h(registers);
51: return (0); /* and return no error */
52: }
53: else {
54: *handle=0;
55: return (385); /* else, return no mouse err */
56: }
57: }
58:
59:
1.1.1.2 ! root 60: /*** MouReadEventQue - get mouse event
1.1 root 61: *
62: * Gets events like the OS/2 MouReadEventQue but this one ignores
63: * the event mask and EventType parameter, never waiting for events,
64: * just returning a 0 mask if nothing happened since last call.
65: * Returns position absolute pixel coordinates
66: */
1.1.1.2 ! root 67: unsigned APIENTRY
! 68: MouReadEventQue (buffer, type, handle)
! 69: PMOUEVENTINFO buffer;
! 70: PUSHORT type;
! 71: HMOU handle;
1.1 root 72: {
73: extern void int33h(); /* mouse interupt caller */
74: int registers[4]; /* register array for above */
75: static lastrow; /* position at last call */
76: static lastcol;
77:
78: buffer->Time=-1L; /* put in dummy time figure */
79: registers[AX]=3; /* ax=3, get mouse status */
80: int33h (registers); /* do mouse call */
1.1.1.2 ! root 81: buffer->fs=0; /* first, blank button info */
1.1 root 82: if (registers[DX]-lastrow || registers[CX]-lastcol) {
1.1.1.2 ! root 83: buffer->row=registers[DX]; /* return row */
! 84: buffer->col=registers[CX]; /* return column */
1.1 root 85: lastrow=registers[DX]; /* save for next time */
86: lastcol=registers[CX];
87: if (registers[BX] & 1) /* if the left button is down*/
1.1.1.2 ! root 88: (buffer->fs) |= 2; /* then set appropriate bit*/
1.1 root 89: if (registers[BX] & 2) /* if the right button down*/
1.1.1.2 ! root 90: (buffer->fs) |= 8; /* then set appropriate bit*/
1.1 root 91: else if (!(registers[BX] & 1)) /* if no buttons, but motion */
1.1.1.2 ! root 92: buffer->fs |= 1; /* then set apporpriate bit*/
1.1 root 93: }
94: if (registers[BX] & 1) /* if the left button is down*/
1.1.1.2 ! root 95: (buffer->fs) |= 4; /* then set appropriate bit*/
1.1 root 96: if (registers[BX] & 2) /* if the right button down*/
1.1.1.2 ! root 97: (buffer->fs) |= 16; /* then set appropriate bit*/
1.1 root 98: return (0); /* return no error */
99: }
100:
101:
1.1.1.2 ! root 102: /*** MouSetDevStatus - Dummy function, included for maximum compatibility
1.1 root 103: */
1.1.1.2 ! root 104: unsigned APIENTRY
! 105: MouSetDevStatus (status, handle)
! 106: PUSHORT status;
! 107: HMOU handle;
1.1 root 108: {
109: }
110:
111:
1.1.1.2 ! root 112: /*** MouGetNumQueEl - Always returns 1 in .Events
1.1 root 113: */
1.1.1.2 ! root 114: unsigned APIENTRY
! 115: MouGetNumQueEl (info, handle)
! 116: PMOUQUEINFO info;
! 117: HMOU handle;
1.1 root 118: {
1.1.1.2 ! root 119: info->cEvents = 1;
1.1 root 120: }
121:
122:
1.1.1.2 ! root 123: /*** MouSetPtrPos - Sets mouse pointer position
1.1 root 124: */
1.1.1.2 ! root 125: unsigned APIENTRY
! 126: MouSetPtrPos (loc, handle)
! 127: PPTRLOC loc;
! 128: HMOU handle;
1.1 root 129: {
130: int registers[4]; /* for int33h() */
131:
132: registers[AX]=4; /* int 33 set position funct */
1.1.1.2 ! root 133: registers[CX]=loc->col; /* new coordinates */
! 134: registers[DX]=loc->row;
1.1 root 135: int33h (registers); /* do it */
136: }
1.1.1.2 ! root 137:
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