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Text File  |  1995-07-26  |  5.6 KB  |  133 lines
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  4.      TTTTkkkk____GGGGeeeettttSSSSeeeelllleeeeccccttttiiiioooonnnn((((3333))))           TTTTkkkk (((( ))))            TTTTkkkk____GGGGeeeettttSSSSeeeelllleeeeccccttttiiiioooonnnn((((3333))))
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  8.      _________________________________________________________________
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  10.      NNNNAAAAMMMMEEEE
  11.           Tk_GetSelection - retrieve the contents of the selection
  12.  
  13.      SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
  14.           ####iiiinnnncccclllluuuuddddeeee <<<<ttttkkkk....hhhh>>>>
  15.  
  16.           int
  17.           TTTTkkkk____GGGGeeeettttSSSSeeeelllleeeeccccttttiiiioooonnnn(_i_n_t_e_r_p, _t_k_w_i_n, _t_a_r_g_e_t, _p_r_o_c, _c_l_i_e_n_t_D_a_t_a)
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  19.      AAAARRRRGGGGUUUUMMMMEEEENNNNTTTTSSSS
  20.           Tcl_Interp      *_i_n_t_e_r_p      (in)      Interpreter  to   use
  21.                                                  for reporting errors.
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  23.           Tk_Window       _t_k_w_i_n        (in)      Window    on    whose
  24.                                                  behalf   to  retrieve
  25.                                                  the         selection
  26.                                                  (determines   display
  27.                                                  from     which     to
  28.                                                  retrieve).
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  30.           Atom            _t_a_r_g_e_t       (in)      Form  in   which   to
  31.                                                  retrieve selection.
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  33.           Tk_GetSelProc   *_p_r_o_c        (in)      Procedure  to  invoke
  34.                                                  to  process pieces of
  35.                                                  the selection as they
  36.                                                  are retrieved.
  37.  
  38.           ClientData      _c_l_i_e_n_t_D_a_t_a   (in)      Arbitrary    one-word
  39.                                                  value   to   pass  to
  40.                                                  _p_r_o_c.
  41.      _________________________________________________________________
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  44.      DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
  45.           TTTTkkkk____GGGGeeeettttSSSSeeeelllleeeeccccttttiiiioooonnnn  retrieves  the  selection  in  the   format
  46.           specified   by   _t_a_r_g_e_t.   The  selection  may  actually  be
  47.           retrieved in several pieces;  as each  piece  is  retrieved,
  48.           _p_r_o_c  is  called  to  process  the  piece.  _P_r_o_c should have
  49.           arguments and result that match the type TTTTkkkk____GGGGeeeettttSSSSeeeellllPPPPrrrroooocccc:
  50.                typedef int Tk_GetSelProc(
  51.                     ClientData _c_l_i_e_n_t_D_a_t_a,
  52.                     Tcl_Interp *_i_n_t_e_r_p,
  53.                     char *_p_o_r_t_i_o_n);
  54.           The _c_l_i_e_n_t_D_a_t_a and _i_n_t_e_r_p parameters to _p_r_o_c will be  copies
  55.           of  the corresponding arguments to TTTTkkkk____GGGGeeeettttSSSSeeeelllleeeeccccttttiiiioooonnnn.  _P_o_r_t_i_o_n
  56.           will be a pointer to a string containing part or all of  the
  57.           selection.   For  large  selections,  _p_r_o_c  will  be  called
  58.           several times with sucessive portions of the selection.  The
  59.           X  Inter-Client  Communication Conventions Manual allows the
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  63.      Page 1                                          (printed 7/23/95)
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  70.      TTTTkkkk____GGGGeeeettttSSSSeeeelllleeeeccccttttiiiioooonnnn((((3333))))           TTTTkkkk (((( ))))            TTTTkkkk____GGGGeeeettttSSSSeeeelllleeeeccccttttiiiioooonnnn((((3333))))
  71.  
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  74.           selection to be returned in formats other than strings, e.g.
  75.           as  an  array  of  atoms  or  integers.  If this happens, Tk
  76.           converts the selection back into  a  string  before  calling
  77.           _p_r_o_c.  If the selection is returned as an array of atoms, Tk
  78.           converts it to a string containing the atom names  separated
  79.           by  white  space.   For  any other format besides string, Tk
  80.           converts the selection to a  string  containing  hexadecimal
  81.           values separated by white space.
  82.  
  83.           TTTTkkkk____GGGGeeeettttSSSSeeeelllleeeeccccttttiiiioooonnnn returns to its caller when the selection has
  84.           been  completely  retrieved and processed by _p_r_o_c, or when a
  85.           fatal error has occurred (e.g. the  selection  owner  didn't
  86.           respond promptly).  TTTTkkkk____GGGGeeeettttSSSSeeeelllleeeeccccttttiiiioooonnnn normally returns TCL_OK;
  87.           if an error occurs, it returns TCL_ERROR and leaves an error
  88.           message  in  _i_n_t_e_r_p->_r_e_s_u_l_t.  _P_r_o_c should also return either
  89.           TCL_OK or TCL_ERROR. If _p_r_o_c encounters an error in  dealing
  90.           with  the  selection,  it  should  leave an error message in
  91.           _i_n_t_e_r_p->_r_e_s_u_l_t and return TCL_ERROR;  this  will  abort  the
  92.           selection retrieval.
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  95.      KKKKEEEEYYYYWWWWOOOORRRRDDDDSSSS
  96.           format, get, selection retrieval
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  129.      Page 2                                          (printed 7/23/95)
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