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Text File  |  1995-07-26  |  6.8 KB  |  133 lines
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  4.      TTTTkkkk____GGGGeeeettttFFFFoooonnnnttttSSSSttttrrrruuuucccctttt((((3333))))          TTTTkkkk (((( ))))           TTTTkkkk____GGGGeeeettttFFFFoooonnnnttttSSSSttttrrrruuuucccctttt((((3333))))
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  8.      _________________________________________________________________
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  10.      NNNNAAAAMMMMEEEE
  11.           Tk_GetFontStruct, Tk_NameOfFontStruct,  Tk_FreeFontStruct  -
  12.           maintain database of fonts
  13.  
  14.      SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
  15.           ####iiiinnnncccclllluuuuddddeeee <<<<ttttkkkk....hhhh>>>>
  16.  
  17.           XFontStruct *
  18.           TTTTkkkk____GGGGeeeettttFFFFoooonnnnttttSSSSttttrrrruuuucccctttt((((_i_n_t_e_r_p, _t_k_w_i_n, _n_a_m_e_I_d))))
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  20.           char *
  21.           TTTTkkkk____NNNNaaaammmmeeeeOOOOffffFFFFoooonnnnttttSSSSttttrrrruuuucccctttt((((_f_o_n_t_S_t_r_u_c_t_P_t_r))))
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  23.           TTTTkkkk____FFFFrrrreeeeeeeeFFFFoooonnnnttttSSSSttttrrrruuuucccctttt((((_f_o_n_t_S_t_r_u_c_t_P_t_r))))
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  25.      AAAARRRRGGGGUUUUMMMMEEEENNNNTTTTSSSS
  26.           Tcl_Interp    *_i_n_t_e_r_p          (in)      Interpreter to  use
  27.                                                    for           error
  28.                                                    reporting.
  29.  
  30.           Tk_Window     _t_k_w_i_n            (in)      Token for window in
  31.                                                    which  font will be
  32.                                                    used.
  33.  
  34.           Tk_Uid        _n_a_m_e_I_d           (in)      Name   of   desired
  35.                                                    font.
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  37.           XFontStruct   *_f_o_n_t_S_t_r_u_c_t_P_t_r   (in)      Font  structure  to
  38.                                                    return  name for or
  39.                                                    delete.
  40.      _________________________________________________________________
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  43.      DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
  44.           TTTTkkkk____GGGGeeeettttFFFFoooonnnntttt loads the font indicated by _n_a_m_e_I_d and returns  a
  45.           pointer to information about the font.  The pointer returned
  46.           by TTTTkkkk____GGGGeeeettttFFFFoooonnnntttt will remain valid until TTTTkkkk____FFFFrrrreeeeeeeeFFFFoooonnnntttt is  called
  47.           to release it.  _N_a_m_e_I_d can be either a font name or pattern;
  48.           any value that could be  passed  to  XXXXLLLLooooaaaaddddQQQQuuuueeeerrrryyyyFFFFoooonnnntttt  may  be
  49.           passed   to   TTTTkkkk____GGGGeeeettttFFFFoooonnnntttt.   If  TTTTkkkk____GGGGeeeettttFFFFoooonnnntttt  is  unsuccessful
  50.           (because, for example, there is  no  font  corresponding  to
  51.           _n_a_m_e_I_d)  then it returns NNNNUUUULLLLLLLL and stores an error message in
  52.           _i_n_t_e_r_p->_r_e_s_u_l_t.
  53.  
  54.           TTTTkkkk____GGGGeeeettttFFFFoooonnnntttt  maintains  a  database  of  all  fonts  it   has
  55.           allocated.   If  the same _n_a_m_e_I_d is requested multiple times
  56.           (e.g. by different windows or for different purposes),  then
  57.           additional  calls  for  the same _n_a_m_e_I_d will be handled very
  58.           quickly, without involving the X server.  For  this  reason,
  59.           it  is  generally  better  to  use  TTTTkkkk____GGGGeeeettttFFFFoooonnnntttt in place of X
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  63.      Page 1                                          (printed 7/23/95)
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  70.      TTTTkkkk____GGGGeeeettttFFFFoooonnnnttttSSSSttttrrrruuuucccctttt((((3333))))          TTTTkkkk (((( ))))           TTTTkkkk____GGGGeeeettttFFFFoooonnnnttttSSSSttttrrrruuuucccctttt((((3333))))
  71.  
  72.  
  73.  
  74.           library procedures like XXXXLLLLooooaaaaddddQQQQuuuueeeerrrryyyyFFFFoooonnnntttt.
  75.  
  76.           The procedure TTTTkkkk____NNNNaaaammmmeeeeOOOOffffFFFFoooonnnnttttSSSSttttrrrruuuucccctttt is roughly the inverse  of
  77.           TTTTkkkk____GGGGeeeettttFFFFoooonnnnttttSSSSttttrrrruuuucccctttt.  If its _f_o_n_t_S_t_r_u_c_t_P_t_r argument was created
  78.           by TTTTkkkk____GGGGeeeettttFFFFoooonnnnttttSSSSttttrrrruuuucccctttt, then the return  value  is  the  _n_a_m_e_I_d
  79.           argument  that  was passed to TTTTkkkk____GGGGeeeettttFFFFoooonnnnttttSSSSttttrrrruuuucccctttt to create the
  80.           font.  If  _f_o_n_t_S_t_r_u_c_t_P_t_r  was  not  created  by  a  call  to
  81.           TTTTkkkk____GGGGeeeettttFFFFoooonnnnttttSSSSttttrrrruuuucccctttt,  then  the  return  value is a hexadecimal
  82.           string giving the X  identifier  for  the  associated  font.
  83.           Note:   the  string  returned by TTTTkkkk____NNNNaaaammmmeeeeOOOOffffFFFFoooonnnnttttSSSSttttrrrruuuucccctttt is only
  84.           guaranteed   to   persist   until   the   next    call    to
  85.           TTTTkkkk____NNNNaaaammmmeeeeOOOOffffFFFFoooonnnnttttSSSSttttrrrruuuucccctttt.
  86.  
  87.           When a font returned by  TTTTkkkk____GGGGeeeettttFFFFoooonnnntttt  is  no  longer  needed,
  88.           TTTTkkkk____FFFFrrrreeeeeeeeFFFFoooonnnntttt should be called to release it.  There should be
  89.           exactly one call to TTTTkkkk____FFFFrrrreeeeeeeeFFFFoooonnnntttt for each call to TTTTkkkk____GGGGeeeettttFFFFoooonnnntttt.
  90.           When  a  font is no longer in use anywhere (i.e. it has been
  91.           freed as many times as it has been gotten) TTTTkkkk____FFFFrrrreeeeeeeeFFFFoooonnnntttt  will
  92.           release it to the X server and delete it from the database.
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  95.      KKKKEEEEYYYYWWWWOOOORRRRDDDDSSSS
  96.           font
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  129.      Page 2                                          (printed 7/23/95)
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