mirror of
https://github.com/netsurf-browser/netsurf
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66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
/*
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* Copyright 2009 John-Mark Bell <jmb@netsurf-browser.org>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** \file
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* A collection of grubby utilities for working with OSLib's wimp API.
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*/
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#ifndef riscos_wimputils_h_
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#define riscos_wimputils_h_
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#include <oslib/wimp.h>
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/* Magical union to permit aliasing of wimp_window_state and wimp_open
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* Do not use this directly. Use the macros, instead. */
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typedef union window_open_state {
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wimp_window_state state;
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wimp_open open;
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} window_open_state;
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/* Convert a pointer to a wimp_window_state into a pointer to a wimp_open */
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#define PTR_WIMP_OPEN(pstate) ((wimp_open *) (window_open_state *) (pstate))
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/* Similarly for wimp_message_list */
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typedef struct ns_wimp_message_list {
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/* Nasty hack to ensure that we have at least one field in the struct */
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int first;
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int rest[];
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} ns_wimp_message_list;
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typedef union message_list {
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wimp_message_list wimp;
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ns_wimp_message_list ns;
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} message_list;
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#define PTR_WIMP_MESSAGE_LIST(l) ((wimp_message_list *) (message_list *) (l))
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/* Also for VDU variable lists */
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typedef struct ns_os_vdu_var_list {
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os_vdu_var first;
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os_vdu_var rest[];
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} ns_os_vdu_var_list;
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typedef union vdu_var_list {
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os_vdu_var_list os;
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ns_os_vdu_var_list ns;
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} vdu_var_list;
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#define PTR_OS_VDU_VAR_LIST(l) ((os_vdu_var_list *) (vdu_var_list *) (l))
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#endif
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