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- /*
- ** The Window BOSS's Data Clerk
- ** Copyright (c) 1988 - Philip A. Mongelluzzo
- ** All rights reserved.
- **
- ** wn_iemsg - field input error message handler
- **
- ** Copyright (c) 1988 - Philip A. Mongelluzzo
- ** All rights reserved.
- **
- */
-
- #include "windows.h" /* standard stuff */
-
- /*
- ************
- * wn_ihmsg *
- ************
- */
-
- /*
- ** wn_iemsg(msg)
- **
- ** (char *) msg - pointer to message to be displayed.
- **
- ** RETURNS:
- **
- ** NULL if error, else TRUE
- **
- ** NOTES:
- **
- ** This routine should be modified or replaced with code to suit
- ** your the applications specific needs. It hooks to wn_g????
- ** such that whenever the field validation fails wn_g???? calls wn_iemsg
- ** to display an error message for the field in question. The hooks
- ** in wn_g????? are of the form:
- **
- ** if(validation failed) wn_iemsg(msg);
- **
- ** This routine displays a single line of text on the last line and
- ** waits for a key to be struck before returning to accept new data
- ** for the field in question.
- **
- ** The error message can be a maximum of 80 characters, and must
- ** not contain any formatting directives (\n\t...).
- **
- ** Some wn_g???? (i.e. wn_gtext) have no provision to vaildate
- ** data and therefore never attempt to call this routine.
- **
- */
-
- /*
- ************
- * wn_iemsg *
- ************
- */
-
- wn_iemsg(msg) /* field input error message */
- char *msg; /* the message to display */
- {
- WINDOWPTR wn; /* a window for me */
-
- if(!strlen(msg)) return(TRUE); /* no message - just return */
- if(strlen(msg) > 80) return(NULL); /* dont be foolish */
- wn=wn_open(1000,(wni_mxrows-1),0,(int)strlen(msg),1,(RVIDEO),NVIDEO);
- if(!wn) return(NULL); /* Huh??? */
- wn_puts(wn,0,0,msg); /* display message */
- v_getch(); /* fetch response */
- wn_close(wn); /* make message go away */
- return(TRUE); /* all done */
- }
-
- /* End */
-