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1.1 root 1: /*
2: * This example demonstrates some of the session manager API
1.1.1.2 ! root 3: *
! 4: * Created by Microsoft Corp. 1987
1.1 root 5: */
6:
1.1.1.2 ! root 7: #define INCL_DOSSESMGR
! 8:
! 9: #include <os2def.h> /* defines SELECTOROF and OFFSETOF */
1.1 root 10: #include <stdio.h>
11: #include <ctype.h>
1.1.1.2 ! root 12: #include <bse.h>
1.1 root 13:
14: #define TOTAL_COLMS 80 /* screen size in colms */
15: #define TOTAL_ROWS 24 /* screen size in rows */
16:
17: void Menu();
18: void StartChild();
19: void KillChild();
20: void ExitThisProc();
21:
22: extern unsigned _aenvseg;
23: extern unsigned _acmdln;
24:
25:
1.1.1.2 ! root 26: USHORT KidSID; /* Array of session IDs */
! 27: USHORT KidPID;
1.1 root 28: short Instance;
29: char spbuf[80], pbuf[128], Inputs[10];
30: char Title[100] = "SESSION.EXE";
31:
32: main(ac,av)
33: int ac;
34: char **av;
35: {
36: int i;
37: char **p;
38: char far *progname;
39: /*
40: * Grab the full path name of this program (the one used by EXECPGM())
41: * for use in creating child sessions.
42: */
1.1.1.2 ! root 43: SELECTOROF(progname) = _aenvseg; /* This is standard C runtime stuff */
! 44: OFFSETOF(progname) = _acmdln-1; /* The Path name comes just prior to */
1.1 root 45: /* AV[0] - but remember this is in a */
46: while(*--progname) /* different segment than the rest of */
47: ; /* the program, thus the copy (below) */
48:
49: for (i=0; *++progname; i++) /* Copy a far string to a local buffer */
50: pbuf[i] = *progname;
51: pbuf[i] = 0;
52:
53: KidSID = -1;
54: /*
55: * Look for the first Numeric argument, convert it and break out.
56: */
57: Instance = 0;
58: for (p = av+1; **p; p++) {
59: if (isdigit(**p)) {
60: Instance = atoi(*p);
61: break;
62: }
63: }
64:
65: for (;;) {
66:
67: Menu();
68:
69: switch(getch()) {
70:
71: case 's':
72: StartChild();
73: break;
74: case 'f':
75: KillChild();
76: break;
77: case 'e':
78: ExitThisProc();
79: break;
80: case 'm':
81: break;
82: default:
83: putc('\007', stdout);
84: }
85: }
86: }
87:
88: void
89: Menu()
90: {
91: if( Instance)
92: printf("\t%s Child process # %u\n\n", Title, Instance);
93: else
94: printf("\t%s\n\n", Title);
95: printf("Select an option:\n\n");
96: printf("\ts: Start child\n");
97: printf("\tf: Stop child\n");
98: printf("\te: Exit\n");
99: printf("\tm: Menu\n\n");
100: printf("? ");
101: }
102:
103: void
104: StartChild()
105: {
106: int rc;
1.1.1.2 ! root 107: STARTDATA SDbuf;
! 108: USHORT SessionID, ProcessID;
1.1 root 109:
110: if (KidSID != -1) {
111: printf("Sorry, only one child at a time.\n");
112: return;
113: }
114: sprintf(spbuf, "Child Session # %u", Instance + 1 );
115: sprintf(Inputs, "%u", Instance + 1);
116:
117:
118: printf("Starting Child...\n");
119:
1.1.1.2 ! root 120: SDbuf.cb = sizeof(SDbuf);
1.1 root 121: SDbuf.Related = 1; /* Yes */
122: SDbuf.FgBg = 0; /* Start in the foreground */
123: SDbuf.TraceOpt = 0; /* Run the child synchronously, why? I dunno */
124: SDbuf.PgmTitle = spbuf; /* Title in session manager box */
125: SDbuf.PgmName = pbuf; /* Exec path (see main) */
126: SDbuf.PgmInputs = Inputs; /* Any command line arguments */
1.1.1.2 ! root 127: SDbuf.TermQ = 0; /* No notification queue */
1.1 root 128:
1.1.1.2 ! root 129: rc = DosStartSession(&SDbuf, &SessionID, &ProcessID);
1.1 root 130:
131: if (rc)
132: printf("Failed, %d no more screens available\n", rc);
133: else
134: {
135: printf("Success, screen group %u, PID %u\n", SessionID, ProcessID);
136: KidSID = SessionID;
137: KidPID = ProcessID;
138: }
139:
140: }
141:
142: void
143: KillChild()
144: {
145: short rc;
146:
147: if (KidSID == -1) {
148: printf("Sorry, must start session before you can stop it.\n");
149: return;
150: }
1.1.1.2 ! root 151: rc = DosStopSession(0, KidSID, 0l);
1.1 root 152: #ifdef DEBUG
153: printf("Screen ID: %d\n", KidSID);
154: #endif
155: if (rc)
156: printf("Stop session failed, code %d\n", rc);
157: KidSID = -1;
158: }
159:
160: void
161: ExitThisProc()
162: {
163: printf(" Exiting, gasp cough die...\n");
164: exit(0);
165: }
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