/* * DDS MICRO-C IBM/PC Supplementary window functions * * Copyright 1989-2000 Dave Dunfield * All rights reserved. * * Permission granted for personal (non-commercial) use only. */ #include <8086io.h> #include <window.h> #define SCREEN_WIDTH 80 /* width of IBM-PC screen */ static char wgi = 0; /* * Put a string on the screen in a window */ w_puts(text, window) char *text, *window; { while(*text) w_putc(*text++, window); } /* * Put a string on the screen in the current window */ wputs(text) char *text; { while(*text) wputc(*text++); } /* * Put a string on the screen in a certain width field */ wputf(text, width) char *text; int width; { while(width--) wputc(*text ? *text++ : ' '); } /* * Select an entry from a multiple choice menu */ wmenu(x, y, attrs, names, initial) int x, y, attrs, *initial; char *names[]; { int i, j, mawlen, mawentry; char c, *ptr, n, r; /* First, determine longest selection, and open the window */ for(mawentry=mawlen=0; ptr = names[mawentry]; ++mawentry) { if((i=strlen(ptr)) > mawlen) mawlen = i; } wopen(x, y, (attrs & WBOX3) ? mawlen+2 : mawlen, (attrs & WBOX3) ? mawentry+2 : mawentry, attrs); --mawentry; wcursor_off(); n = *W_OPEN; r = ((unsigned)n>>4) | ((unsigned)n<<4 & 0xf0); for(i=0; i <= mawentry; ++i) { wgotoxy(0, i); wputs(names[i]); } /* Print selection cursor, and wait for keys */ i = *initial; do { wgotoxy(0, i); *W_OPEN = r; wputf(names[i], mawlen); *W_OPEN = n; c = toupper(wgetc()); wgotoxy(0, i); wputf(names[i], mawlen); switch(c) { /* handle special cases */ case _KUA: /* UP arrow */ i = i ? i-1 : mawentry; break; case _KDA: /* DOWN arrow */ i = (i < mawentry) ? i+1 : 0; break; case _KHO: /* HOME key */ i = 0; break; case _KEN: /* END key */ i = mawentry; break; case 0x1B: /* ESCAPE key (abort) */ W_OPEN[1] |= 0x10; /* Insure window clears */ c = '\n'; /* Force exit */ initial = -1; /* Indicate abortion */ break; case '\n': /* RETURN key (select) */ wgotoxy(0, i); *W_OPEN = r; wputc(*names[i]); *W_OPEN = n; *initial = i; initial = 0; /* Indicate enter */ break; default: if(c >= 0) { /* First character lookup */ for(j=0; j <= mawentry; ++j) if(*names[j] == c) { i = j; break; } break; } wputc(7); } } while(c != '\n'); wclose(); return initial; } /* * Get a string from a field in the window */ wgets(x, y, string, length) int x, y, length; char string[]; { int c, i, j, len; len = length & 0x7f; i = 0; for(;;) { wgotoxy(x, y); wputf(string, len); wgotoxy(x+i, y); wgi ? wcursor_block() : wcursor_line(); switch(c = wgetc()) { case _KLA : /* Backup */ if(i) --i; break; case _KRA : /* Forward */ if(string[i] && (i < len)) ++i; break; case _KBS : /* Backspace & delete */ if(!i) break; --i; case _KDL : /* Delete character */ for(j=i; (j < len) && string[j]; ++j) string[j] = string[j+1]; break; case _KIN: /* Insert key */ wgi = !wgi; break; case _KHO: /* Home key */ i = 0; break; case _KEN: /* End key */ for(i=0; (i < (len-1)) && string[i]; ++i); break; case _KPU: /* Page up (clear field) */ i = 0; case _KPD: /* Page down (Clear to end) */ string[i] = 0; break; default: /* Normal (data) character */ if(c >= 0) { if((length & 0x80) && ((c < '0') || (c > '9'))) break; if(wgi) { for(j=len; j > i; --j) { string[j] = string[j-1]; string[len] = 0; } } if(!string[i]) string[i+1] = 0; string[i] = c; if(i < (len-1)) ++i; break; } case '\n': /* Enter */ case 0x1B: /* Escape */ return c; } } } /* * Handle a screen form input */ register wform(args) unsigned args; { unsigned *argptr, attrs, x, y, length, pos, *nptr, *nptr1; char **form, *ptr, buffer[25]; /* Extract the fixed arguments */ argptr = nargs()*2 + &args; x = *--argptr; y = *--argptr; attrs = *--argptr; form = *--argptr; /* Get form address */ /* Draw the initial values */ wopen(x, y, (int)form[0] >> 8, (int)form[0] & 255, attrs); for(pos=1; ptr = form[pos]; ++pos) { nptr = nptr1 = *(argptr - pos*2); wgotoxy(*ptr++, *ptr++); if((length = *ptr++) & 0x80) sprintf(nptr = buffer,"%u", *nptr1); wputs(ptr); wputc(' '); wputf(nptr, length & 0x7f); } /* Now, allow editing of the forms */ pos = 1; for(;;) { ptr = form[pos]; nptr1 = nptr = *(argptr - pos*2); x = *ptr++; y = *ptr++; if((length = *ptr++) & 0x80) sprintf(nptr = buffer,"%u", *nptr1); attrs = wgets(x+strlen(ptr)+1, y, nptr, length); if(length & 0x80) *nptr1 = atoi(buffer); switch(attrs) { case _KUA : /* Up arrow */ if(pos > 1) --pos; else { for(length=1; form[length]; ++length); pos = length-1; } break; case _KDA : /* Down arrow */ if(!form[++pos]) pos = 1; break; case '\n' : /* Enter key */ if(form[++pos]) break; wclose(); return 0; case 0x1B : /* Escape */ wclose(); return -1; default: wputc(7); } } }
file: /Techref/com/dunfield/ftp/embedpc/winrtrns_c.htm, 41KB, , updated: 2000/5/5 10:01, local time: 2024/12/28 05:33,
18.191.171.121:LOG IN
|
©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions? <A HREF="http://ecomorder.com/Techref/com/dunfield/ftp/embedpc/winrtrns_c.htm"> Colorized Source Code</A> |
Did you find what you needed? |
Welcome to ecomorder.com! |
Welcome to ecomorder.com! |
.