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87 lines
2.7 KiB
C
87 lines
2.7 KiB
C
/* Copyright Massachusetts Institute of Technology 1985 */
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#include "copyright.h"
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/*
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* XMenu: MIT Project Athena, X Window system menu package
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*
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* XMenuPost - Maps a given menu to the display and activates
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* the menu for user selection. The user is allowed to
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* specify the mouse button event mask that will be used
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* to identify a selection request. When a selection
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* request is received (i.e., when the specified mouse
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* event occurs) the data returned will be either the
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* data associated with the particular selection active
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* at the time of the selection request or NULL if no
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* selection was active. A menu selection is shown to
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* be active by placing a highlight box around the
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* selection as the mouse cursor enters its active
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* region. Inactive selections will not be highlighted.
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* As the mouse cursor moved from one menu pane
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* to another menu pane the pane being entered is raised
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* and activated and the pane being left is deactivated.
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* If an error occurs NULL will be returned with the
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* p_num set to POST_ERROR, s_num set to
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* NO_SELECTION and _XMErrorCode set to an
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* appropriate value.
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* Every time the routine returns successfully the
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* p_num and s_num indices will be set to indicate
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* the currently active pane and/or selection. If the
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* mouse was not in a selection window at the time
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* s_num will be set to NO_SELECTION.
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*
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* Author: Tony Della Fera, DEC
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* August, 1984
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*
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*/
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#include "XMenuInt.h"
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char *
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XMenuPost(register Display *display, register XMenu *menu, register int *p_num, register int *s_num, register int x_pos, register int y_pos, int event_mask)
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/* Previously opened display. */
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/* Menu to post. */
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/* Pane number selected. */
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/* Selection number selected. */
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/* X coordinate of menu position. */
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/* Y coordinate of menu position. */
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/* Mouse button event mask. */
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{
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register int stat; /* Routine call return status. */
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char *data; /* Return data. */
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/*
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* Set up initial pane and selection assumptions.
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*/
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/*
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* Make the procedure call.
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*/
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stat = XMenuActivate(
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display,
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menu,
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p_num, s_num,
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x_pos, y_pos,
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event_mask,
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&data, 0);
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/*
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* Check the return value and return accordingly.
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*/
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switch (stat) {
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case XM_FAILURE:
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*p_num = POST_ERROR;
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*s_num = NO_SELECTION;
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return(NULL);
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case XM_NO_SELECT:
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case XM_IA_SELECT:
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*s_num = NO_SELECTION;
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return(NULL);
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case XM_SUCCESS:
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default:
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return(data);
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}
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}
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