oldXMenu/Post.c

   1 #include "copyright.h"
   2
   3 /* Copyright    Massachusetts Institute of Technology    1985   */
   4
   5 /*
   6  * XMenu:       MIT Project Athena, X Window system menu package
   7  *
   8  *      XMenuPost -     Maps a given menu to the display and activates
   9  *                      the menu for user selection.  The user is allowed to
  10  *                      specify the mouse button event mask that will be used
  11  *                      to identify a selection request.  When a selection
  12  *                      request is received (i.e., when the specified mouse
  13  *                      event occurs) the data  returned will be either the
  14  *                      data associated with the particular selection active
  15  *                      at the time of the selection request or NULL if no
  16  *                      selection was active.  A menu selection is shown to
  17  *                      be active by placing a highlight box around the
  18  *                      selection as the mouse cursor enters its active
  19  *                      region.  Inactive selections will not be highlighted.
  20  *                      As the mouse cursor moved from one menu pane
  21  *                      to another menu pane the pane being entered is raised
  22  *                      and activated and the pane being left is deactivated.
  23  *                      If an error occurs NULL will be returned with the
  24  *                      p_num set to POST_ERROR, s_num set to
  25  *                      NO_SELECTION and _XMErrorCode set to an
  26  *                      appropriate value.
  27  *                      Every time the routine returns successfully the
  28  *                      p_num and s_num indices will be set to indicate
  29  *                      the currently active pane and/or selection.  If the
  30  *                      mouse was not in a selection window at the time
  31  *                      s_num will be set to NO_SELECTION.
  32  *
  33  *      Author:         Tony Della Fera, DEC
  34  *                      August, 1984
  35  *
  36  */
  37
  38 #include "XMenuInt.h"
  39
  40 char *
  41 XMenuPost(display, menu, p_num, s_num, x_pos, y_pos, event_mask)
  42     register Display *display;  /* Previously opened display. */
  43     register XMenu *menu;       /* Menu to post. */
  44     register int *p_num;        /* Pane number selected. */
  45     register int *s_num;        /* Selection number selected. */
  46     register int x_pos;         /* X coordinate of menu position. */
  47     register int y_pos;         /* Y coordinate of menu position. */
  48     int event_mask;             /* Mouse button event mask. */
  49 {
  50     register int stat;          /* Routine call return status. */
  51     char *data;                 /* Return data. */
  52
  53     /*
  54      * Set up initial pane and selection assumptions.
  55      */
  56
  57     /*
  58      * Make the procedure call.
  59      */
  60     stat = XMenuActivate(
  61                          display,
  62                          menu,
  63                          p_num, s_num,
  64                          x_pos, y_pos,
  65                          event_mask,
  66                          &data, 0);
  67
  68     /*
  69      * Check the return value and return accordingly.
  70      */
  71     switch (stat) {
  72         case XM_FAILURE:
  73             *p_num = POST_ERROR;
  74             *s_num = NO_SELECTION;
  75             return(NULL);
  76         case XM_NO_SELECT:
  77         case XM_IA_SELECT:
  78             *s_num = NO_SELECTION;
  79             return(NULL);
  80         case XM_SUCCESS:
  81         default:
  82             return(data);
  83     }
  84 }
  85
  86 /* arch-tag: 7b6104e5-fa32-4342-aa17-05296a30dd70
  87    (do not change this comment) */