This example shows how to set an exception handler for the current thread.
#define INCL_DOSPROCESS /* DOS process values (for DosSleep) */ #define INCL_DOSEXCEPTIONS /* DOS exception values */ #define INCL_ERRORS /* DOS error values */ #include <os2.h> #include <stdio.h> ULONG _System MyTermHandler( PEXCEPTIONREPORTRECORD p1, PEXCEPTIONREGISTRATIONRECORD p2, PCONTEXTRECORD p3, PVOID pv ); int main (VOID) { EXCEPTIONREGISTRATIONRECORD RegRec = {0}; /* Exception Registration Record */ APIRET rc = NO_ERROR; /* Return code */ /* Add MyTermHandler to this thread's chain of exception handlers */ RegRec.ExceptionHandler = (ERR)MyTermHandler; rc = DosSetExceptionHandler( &RegRec ); if (rc != NO_ERROR) { printf("DosSetExceptionHandler error: return code = %u\n",rc); return 1; } printf("Terminate this program using Ctrl-C or Ctrl-Break.\n"); rc = DosSleep(60000L); /* Give user plenty of time to comply... */ rc = DosUnsetExceptionHandler( &RegRec ); if (rc != NO_ERROR) { printf("DosUnsetExceptionHandler error: return code = %u\n",rc); return 1; } return NO_ERROR; } /***************************************************************************/ ULONG _System MyTermHandler( PEXCEPTIONREPORTRECORD p1, PEXCEPTIONREGISTRATIONRECORD p2, PCONTEXTRECORD p3, PVOID pv ) { printf("*** MyTermHandler entered: ExceptionNum = %x\n",p1->ExceptionNum); switch( p1->ExceptionNum) { case XCPT_SIGNAL: { printf(" XCPT_SIGNAL"); switch( p1->ExceptionInfo[0] ) { case XCPT_SIGNAL_INTR: { printf("_INTR"); break; } case XCPT_SIGNAL_KILLPROC: { printf("_KILLPROC"); break; } case XCPT_SIGNAL_BREAK: { printf("_BREAK"); break; } default:; } printf("\n"); break; } case XCPT_PROCESS_TERMINATE: { printf(" Process Terminate \n"); break;} case XCPT_ASYNC_PROCESS_TERMINATE: { printf(" Async Process Term\n"); break;} case XCPT_UNWIND: { printf(" XCPT_UNWIND\n"); break;} default:; } return XCPT_CONTINUE_SEARCH; /* Exception not resolved... */ }