(******************************************************************************)
(*                              SAMPLE03.MOD                                  *)
(*                                                                            *)
(*                             SetFont Example                                *)
(* Taken from SAMPLE03.PAS - Metagraphics Software Corporation (c) 1987-1989  *)
(*                                                                            *)
(* PSW 10/31/90 08:20pm                                                       *)
(******************************************************************************)

MODULE Sample03;
(*
 *  Graphix
 *  Release 3.7
 *  (c) Copyright 1986-1992 PMI
 *  Green Bay, Wisconsin
 *  (414) 468-6040
 *  All rights reserved
 *
 *)

  IMPORT GrQry;
  IMPORT GrConst;
  IMPORT GrFonts;
  IMPORT GrPorts;
  IMPORT Meta;
  IMPORT IO;

(* standard memory allocation procedures *)
  FROM Storage IMPORT ALLOCATE, DEALLOCATE, Available;

  VAR
    GrafixCard,
    CommPort:   INTEGER;
    i, loadErr: INTEGER;
    font1Ptr,
    font2Ptr,
    font3Ptr,
    original:   GrFonts.adsFont;
    filename:   ARRAY[0..128] OF CHAR;
    scrnR:      GrConst.rect;
    ch:         CHAR;
    scrnPort:   GrPorts.adsPort;


BEGIN
  (* init the system *)

  GrQry.GrInit(GrafixCard, CommPort);

  i := Meta.InitGrafix(-GrafixCard);

  IF (i # 0) THEN
    (* Display reason for no go *)
    GrQry.GrInitErr(GrafixCard, CommPort, i);
  END;

(* get original fonts buffer pointer *)
  Meta.GetPort(scrnPort);
  original := scrnPort^.txFont;

  ALLOCATE(ADDRESS(font1Ptr), 3000);
  loadErr := Meta.FileLoad('SYSTEM08.FNT', ADDRESS(font1Ptr), 3000);
  IF (loadErr < 0) THEN
    GrQry.GrQuit('FileLoad(SYSTEM08.FNT) Error.', 1);
  END;

  ALLOCATE(ADDRESS(font2Ptr), 3000);
  loadErr := Meta.FileLoad('SYSTEM16.FNT', ADDRESS(font2Ptr), 3000);
  IF (loadErr < 0) THEN
    GrQry.GrQuit('FileLoad(SYSTEM16.FNT) Error.', 1);
  END;

  ALLOCATE(ADDRESS(font3Ptr), 4000);
  loadErr := Meta.FileLoad('ROMANSIM.FNT', ADDRESS(font3Ptr), 4000);
  IF (loadErr < 0) THEN
    GrQry.GrQuit('FileLoad(ROMANSIM.FNT) Error.', 1);
  END;

  Meta.ScreenRect(scrnR);
  Meta.SetDisplay(GrConst.GrafPg0);
  Meta.EraseRect(scrnR);
  Meta.TextSize(14, 14);      (* Set text size for stroked font, ROMANSIM.FNT *)
  Meta.TextFace(GrConst.cProportional);

  Meta.SetFont(ADDRESS(font1Ptr));            (* Set font 1 active            *)
  Meta.MoveTo(10, 130);
  Meta.DrawString('Text output using SYSTEM08.FNT');

  Meta.SetFont(ADDRESS(font2Ptr));            (* Set font 2 active            *)
  Meta.MoveTo(10, 150);
  Meta.DrawString('Text output using SYSTEM16.FNT');

  Meta.SetFont(ADDRESS(font3Ptr));            (* Set font 3 active            *)
  Meta.MoveTo(10, 170);
  Meta.DrawString('Text output using ROMANSIM.FNT');

  Meta.SetFont(ADDRESS(original));            (* Set original font  active    *)
  Meta.MoveTo(10, 190);
  Meta.DrawString('Text output using original system font');

  Meta.MoveTo(10, 20);
  Meta.DrawString('Press return to terminate');
  ch := IO.RdChar();                          (* Wait for a keypress          *)

  GrQry.GrQuit('', 0);
END Sample03.