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Annotation of researchv10dc/630/man/src/p_man/man3/fontused.3r, revision 1.1.1.1

1.1       root        1: .ds ZZ DEVELOPMENT PACKAGE
                      2: .TH FONTUSED 3R "630 MTG"
                      3: .XE "fontused()"
                      4: .XE "fontiname()"
                      5: .SH NAME
                      6: fontused, fontiname \- font menu generator routines
                      7: .SH SYNOPSIS
                      8: .B int fontused (fname)
                      9: .PP
                     10: .B char \(**fontiname (i)
                     11: .sp
                     12: .B char \(**fname;
                     13: .br
                     14: .B int i;
                     15: .SH DESCRIPTION
                     16: The
                     17: .I fontused
                     18: function
                     19: tests if a given font has been requested by some process.
                     20: This is a way to test if a call to
                     21: .I fontremove
                     22: will succeed.
                     23: A font requested by a process cannot be removed.
                     24: \f2Fontused\f1 returns 1 if the font has been requested and 0 otherwise.
                     25: .P
                     26: The
                     27: .I fontiname
                     28: function
                     29: returns the name of the
                     30: .I ith+1
                     31: font in the font queue.
                     32: This is useful for generating a menu of fonts in the cache.
                     33: If there are less than
                     34: .I i+1
                     35: fonts, (char *)0 is returned.
                     36: .SH EXAMPLE
                     37: The following example is a menu generator function that holds
                     38: all the fonts in the cache. The fonts in use are greyed.
                     39: 
                     40: .nf
                     41: .ft CM
                     42: 
                     43: Titem *
                     44: fontmenu(i, m)
                     45: int i;
                     46: Tmenu *m;
                     47: {
                     48:    static Titem ti;
                     49:    int fontused();
                     50:    char *fontiname();
                     51: 
                     52:    if(ti.text = fontiname(i))
                     53:       ti.ufield.grey = fontused(ti.text);
                     54:    return(&ti);
                     55: }
                     56: .ft R
                     57: 
                     58: .SH SEE ALSO
                     59: fontname(3R), fontrequest(3R), fontsave(3L), tmenuhit(3R).

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