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213
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1 /* The mswindows event_stream interface.
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2 Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Sun Microsystems, Inc.
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4 Copyright (C) 1996 Ben Wing.
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5 Copyright (C) 1997 Jonathan Harris.
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6
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7 This file is part of XEmacs.
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8
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9 XEmacs is free software; you can redistribute it and/or modify it
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10 under the terms of the GNU General Public License as published by the
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11 Free Software Foundation; either version 2, or (at your option) any
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12 later version.
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13
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14 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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17 for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with XEmacs; see the file COPYING. If not, write to
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21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 Boston, MA 02111-1307, USA. */
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23
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24 /* Synched up with: Not in FSF. */
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25
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26 /* Authorship:
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27
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28 Ultimately based on FSF.
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29 Rewritten by Ben Wing.
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30 Rewritten for mswindows by Jonathan Harris, November 1997 for 20.4.
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31 */
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32
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33 #include <config.h>
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34 #include "lisp.h"
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35
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36 #include "device.h"
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37 #include "console-msw.h"
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38 #include "events.h"
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39 #include "frame.h"
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40 #include "process.h"
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41
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42 #include "sysproc.h"
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43 #include "syswait.h"
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44 #include "systime.h"
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45
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46 #include "event-msw.h"
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47
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48 static struct event_stream *mswindows_event_stream;
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223
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49
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50 /*
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51 * Two separate queues, for efficiency, one (_u_) for user events, and
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52 * another (_s_) for non-user ones. We always return events out of the
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53 * first one until it is empty and only then proceed with the second
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54 * one.
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55 */
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56 static Lisp_Object mswindows_u_dispatch_event_queue, mswindows_u_dispatch_event_queue_tail;
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57 static Lisp_Object mswindows_s_dispatch_event_queue, mswindows_s_dispatch_event_queue_tail;
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213
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58
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59 /*
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60 * List of mswindows waitable handles.
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61 * Apart from the dispatch queue semaphore, all of these handles may be waited
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219
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62 * on multiple times in emacs_mswindows_next_event before being processed and so
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63 * must be manual-reset events.
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213
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64 */
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65 static HANDLE mswindows_waitable[MAX_WAITABLE];
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66
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67 /* random emacs info associated with each of the wait handles */
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68 static mswindows_waitable_info_type mswindows_waitable_info[MAX_WAITABLE];
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69
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223
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70 /* Count of quit chars currently in the queue */
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71 /* Incremented in WM_CHAR handler in msw-proc.c
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72 Decremented in mswindows_dequeue_dispatch_event() */
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73 int mswindows_quit_chars_count = 0;
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74
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75 /* These are Lisp integers; see DEFVARS in this file for description. */
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76 int mswindows_dynamic_frame_resize;
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77 int mswindows_num_mouse_buttons;
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78 int mswindows_button2_max_skew_x;
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79 int mswindows_button2_max_skew_y;
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80 int mswindows_button2_chord_time;
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81
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219
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82 /* Number of wait handles */
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83 static mswindows_waitable_count=0;
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84
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223
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85 static int
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86 mswindows_user_event_p (struct Lisp_Event* sevt)
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87 {
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88 return (sevt->event_type == key_press_event
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89 || sevt->event_type == button_press_event
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90 || sevt->event_type == button_release_event
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91 || sevt->event_type == pointer_motion_event);
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92 }
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93
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219
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94 /*
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223
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95 * Add an emacs event to the proper dispatch queue
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219
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96 */
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213
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97 void
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98 mswindows_enqueue_dispatch_event (Lisp_Object event)
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99 {
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223
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100 int user_p = mswindows_user_event_p (XEVENT(event));
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101 enqueue_event (event,
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102 user_p ? &mswindows_u_dispatch_event_queue :
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103 &mswindows_s_dispatch_event_queue,
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104 user_p ? &mswindows_u_dispatch_event_queue_tail :
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105 &mswindows_s_dispatch_event_queue_tail);
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106
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107 /* This one does not go to window procedure, hence does not
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108 generate XM_BUMPQUEUE magic event! */
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109 PostMessage (NULL, XM_BUMPQUEUE, 0, 0);
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213
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110 }
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111
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219
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112 /*
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223
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113 * Remove and return the first emacs event on the dispatch queue.
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114 * Give a preference to user events over non-user ones.
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219
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115 */
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213
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116 static Lisp_Object
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223
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117 mswindows_dequeue_dispatch_event ()
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213
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118 {
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119 Lisp_Object event;
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223
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120 struct Lisp_Event* sevt;
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121
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122 assert (!NILP(mswindows_u_dispatch_event_queue) ||
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123 !NILP(mswindows_s_dispatch_event_queue));
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124
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125 event = dequeue_event (
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126 NILP(mswindows_u_dispatch_event_queue) ?
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127 &mswindows_s_dispatch_event_queue :
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128 &mswindows_u_dispatch_event_queue,
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129 NILP(mswindows_u_dispatch_event_queue) ?
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130 &mswindows_s_dispatch_event_queue_tail :
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131 &mswindows_u_dispatch_event_queue_tail);
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132
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133 sevt = XEVENT(event);
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134 if (sevt->event_type == key_press_event
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135 && (sevt->event.key.modifiers & FAKE_MOD_QUIT))
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136 {
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137 sevt->event.key.modifiers &= ~FAKE_MOD_QUIT;
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138 --mswindows_quit_chars_count;
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139 }
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140
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213
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141 return event;
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142 }
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143
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144 /*
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219
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145 * Remove and return the first emacs event on the dispatch queue that matches
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223
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146 * the supplied event
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147 * Timeout event matches if interval_id equals to that of the given event.
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148 * Keypress event matches if logical AND between modifiers bitmask of the
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149 * event in the queue and that of the given event is non-zero
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150 * For all other event types, this function asserts.
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219
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151 */
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223
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152
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219
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153 Lisp_Object
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223
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154 mswindows_cancel_dispatch_event (struct Lisp_Event* match)
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219
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155 {
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156 Lisp_Object event;
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157 Lisp_Object previous_event=Qnil;
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223
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158 int user_p = mswindows_user_event_p (match);
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159 Lisp_Object* head = user_p ? &mswindows_u_dispatch_event_queue :
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160 &mswindows_s_dispatch_event_queue;
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161 Lisp_Object* tail = user_p ? &mswindows_u_dispatch_event_queue_tail :
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162 &mswindows_s_dispatch_event_queue_tail;
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219
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163
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223
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164 assert (match->event_type == timeout_event
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165 || match->event_type == key_press_event);
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219
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166
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223
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167 EVENT_CHAIN_LOOP (event, *head)
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168 {
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169 int found = 1;
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170 if (XEVENT_TYPE (event) != match->event_type)
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171 found = 0;
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172 if (found && match->event_type == timeout_event
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173 && (XEVENT(event)->event.timeout.interval_id !=
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174 match->event.timeout.interval_id))
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175 found = 0;
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176 if (found && match->event_type == key_press_event
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177 && ((XEVENT(event)->event.key.modifiers &
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178 match->event.key.modifiers) == 0))
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179 found = 0;
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180
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181 if (found)
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182 {
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183 if (NILP (previous_event))
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184 dequeue_event (head, tail);
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185 else
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186 {
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187 XSET_EVENT_NEXT (previous_event, XEVENT_NEXT (event));
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188 if (EQ (*tail, event))
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189 *tail = previous_event;
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190 }
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191
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192 return event;
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193 }
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219
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194 previous_event = event;
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223
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195 }
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219
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196 }
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197
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198 /*
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213
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199 * Find a free waitable slot
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200 */
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201 static int
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202 mswindows_find_free_waitable(void)
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203 {
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204 int i;
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205 for (i=0; i<mswindows_waitable_count; i++)
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206 if (mswindows_waitable_info[i].type == mswindows_waitable_type_none)
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207 return i;
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208 assert (mswindows_waitable_count < MAX_WAITABLE);
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209 return mswindows_waitable_count++;
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210 }
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211
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212 /*
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213 * Create a new waitable using the type and data passed in by the info structure
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214 * Returns a pointer to the info associated with the assigned waitable object
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215 */
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216 mswindows_waitable_info_type *
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217 mswindows_add_waitable(mswindows_waitable_info_type *info)
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218 {
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219 int waitable;
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220
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221 switch (info->type)
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222 {
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223 case mswindows_waitable_type_dispatch:
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223
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224 assert (0); /* kkm - should not get here */
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213
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225 /* Can only have one waitable for the dispatch queue, and it's the first one */
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226 assert (mswindows_waitable_count++ == 0);
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227 waitable=0;
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223
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228 // InitializeCriticalSection(&mswindows_dispatch_crit);
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213
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229 assert (mswindows_waitable[0] = CreateSemaphore (NULL, 0, 0x7fffffff, NULL));
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230 return mswindows_waitable_info+0;
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231
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232 default:
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233 assert(0);
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234 }
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235 mswindows_waitable_info[waitable].type = info->type;
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236 return mswindows_waitable_info+waitable;
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237 }
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238
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239 /*
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240 * Remove a waitable using the type and data passed in by the info structure.
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241 */
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242 void
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243 mswindows_remove_waitable(mswindows_waitable_info_type *info)
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244 {
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245 int waitable;
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246
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247 switch (info->type)
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248 {
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249
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250 default:
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251 assert(0);
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252 }
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253
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254 CloseHandle(mswindows_waitable[waitable]);
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255 mswindows_waitable[waitable] = 0;
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256 mswindows_waitable_info[waitable].type = mswindows_waitable_type_none;
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257 if (waitable == mswindows_waitable_count-1)
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258 --mswindows_waitable_count;
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259 }
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260
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223
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261 /*
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262 * Callback procedure for synchronous timer messages
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263 */
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264 static void CALLBACK
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265 mswindows_wm_timer_callback (HWND hwnd, UINT umsg, UINT id_timer, DWORD dwtime)
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266 {
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267 Lisp_Object emacs_event = Fmake_event (Qnil, Qnil);
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268 struct Lisp_Event *event = XEVENT (emacs_event);
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269
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270 KillTimer (NULL, id_timer);
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271
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272 event->channel = Qnil;
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273 event->timestamp = dwtime;
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274 event->event_type = timeout_event;
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275 event->event.timeout.interval_id = id_timer;
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276
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277 mswindows_enqueue_dispatch_event (emacs_event);
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278 }
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279
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280 static void
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281 mswindows_drain_windows_queue ()
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282 {
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283 MSG msg;
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284 while (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE))
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285 DispatchMessage (&msg);
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286 }
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287
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288 /*
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289 * This drains the event queue and fills up two internal queues until
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290 * an event of a type specified by USER_P is retrieved.
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291 *
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292 * If user_p, then the function drains until the first user event, or
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293 * the first non-user event if there no user events. Otherwise, If
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294 * not user_p, it does not give preference to user events.
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295 *
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296 * If badly_p, then the function does not return until an event is
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297 * available.
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298 *
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299 * The code does not rely on MsgWaitForMultipleObjects preference for
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300 * messages over waitable handles.
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301 *
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302 * Used by emacs_mswindows_event_pending_p and emacs_mswindows_next_event
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303 */
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304 static void
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305 mswindows_need_event (int user_p, int badly_p)
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306 {
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307 int active;
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308
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309 /* Have to drain Windows message queue first, otherwise, we may miss
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310 quit char when called from quit_p */
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311 mswindows_drain_windows_queue ();
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312
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313 while (NILP (mswindows_u_dispatch_event_queue) &&
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314 (user_p || NILP (mswindows_s_dispatch_event_queue)))
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315 {
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316 /* If we already have an event, we've got someting to return - no wait! */
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317 if (!NILP (mswindows_u_dispatch_event_queue)
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318 || !NILP (mswindows_s_dispatch_event_queue))
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319 badly_p = 0;
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320
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321 /* Now try getting a message */
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322 active = MsgWaitForMultipleObjects (mswindows_waitable_count,
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323 mswindows_waitable,
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324 FALSE, badly_p ? INFINITE : 0,
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325 QS_ALLINPUT);
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326
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327 /* This will assert if handle being waited for becomes abandoned.
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328 Not the case currently tho */
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329 assert ((!badly_p && active == WAIT_TIMEOUT) ||
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330 (active >= WAIT_OBJECT_0 &&
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331 active <= WAIT_OBJECT_0 + mswindows_waitable_count));
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332
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333 if (active == WAIT_TIMEOUT)
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334 {
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335 /* No luck trying - just return what we've already got */
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336 return;
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337 }
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338 else if (active == WAIT_OBJECT_0 + mswindows_waitable_count)
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339 {
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340 /* Got your message, thanks */
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341 mswindows_drain_windows_queue ();
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342 }
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343 else
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344 {
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345 /* XXX FIXME: We should do some kind of round-robin scheme to ensure fairness */
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346 int waitable = active - WAIT_OBJECT_0;
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347 mswindows_waitable_info_type *info = mswindows_waitable_info + waitable;
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348
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349 switch (info->type)
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350 {
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351 /* XXX FIXME: Should enque subprocess event here so that it is not lost */
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352 default:
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353 assert(0);
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354 }
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355 }
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356 } /* while */
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357
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358 return;
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359 }
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360
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213
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361
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362 /************************************************************************/
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363 /* methods */
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364 /************************************************************************/
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365
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366 static int
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367 emacs_mswindows_add_timeout (EMACS_TIME thyme)
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368 {
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223
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369 int milliseconds;
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213
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370 EMACS_TIME current_time;
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371 EMACS_GET_TIME (current_time);
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372 EMACS_SUB_TIME (thyme, thyme, current_time);
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223
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373 milliseconds = EMACS_SECS (thyme) * 1000 +
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374 (EMACS_USECS (thyme) + 500) / 1000;
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213
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375 if (milliseconds < 1)
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376 milliseconds = 1;
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223
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377 return SetTimer (NULL, 0, milliseconds, mswindows_wm_timer_callback);
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213
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378 }
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379
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380 static void
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381 emacs_mswindows_remove_timeout (int id)
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382 {
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223
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383 struct Lisp_Event match_against;
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384 Lisp_Object emacs_event;
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385
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386 KillTimer (NULL, id);
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387
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388 /* If there is a dispatch event generated by this
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389 timeout in the queue, we have to remove it too. */
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390 match_against.event_type = timeout_event;
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391 match_against.event.timeout.interval_id = id;
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392 emacs_event = mswindows_cancel_dispatch_event (&match_against);
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393 if (!NILP (emacs_event))
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394 Fdeallocate_event(emacs_event);
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213
|
395 }
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|
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396
|
|
219
|
397 /* If `user_p' is false, then return whether there are any win32, timeout,
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|
|
398 * or subprocess events pending (that is, whether
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399 * emacs_mswindows_next_event() would return immediately without blocking).
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|
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400 *
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|
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401 * if `user_p' is true, then return whether there are any *user generated*
|
|
|
402 * events available (that is, whether there are keyboard or mouse-click
|
|
|
403 * events ready to be read). This also implies that
|
|
|
404 * emacs_mswindows_next_event() would not block.
|
|
|
405 */
|
|
213
|
406 static int
|
|
|
407 emacs_mswindows_event_pending_p (int user_p)
|
|
|
408 {
|
|
223
|
409 mswindows_need_event (user_p, 0);
|
|
219
|
410
|
|
223
|
411 return (!NILP (mswindows_u_dispatch_event_queue)
|
|
|
412 || (!user_p && !NILP (mswindows_s_dispatch_event_queue)));
|
|
213
|
413 }
|
|
|
414
|
|
|
415 /*
|
|
|
416 * Return the next event
|
|
|
417 */
|
|
|
418 static void
|
|
|
419 emacs_mswindows_next_event (struct Lisp_Event *emacs_event)
|
|
|
420 {
|
|
223
|
421 Lisp_Object event, event2;
|
|
|
422
|
|
|
423 /* Give strong preference to user events */
|
|
|
424 mswindows_need_event (1, 1);
|
|
213
|
425
|
|
223
|
426 /* XXX Copied from event-Xt.c */
|
|
|
427 event = mswindows_dequeue_dispatch_event (!NILP(mswindows_u_dispatch_event_queue));
|
|
|
428 XSETEVENT (event2, emacs_event);
|
|
|
429 Fcopy_event (event, event2);
|
|
|
430 Fdeallocate_event (event);
|
|
213
|
431 }
|
|
|
432
|
|
|
433 /*
|
|
|
434 * Handle a magic event off the dispatch queue.
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|
|
435 */
|
|
|
436 static void
|
|
|
437 emacs_mswindows_handle_magic_event (struct Lisp_Event *emacs_event)
|
|
|
438 {
|
|
|
439 #if 0
|
|
|
440 stderr_out("magic %x, (%d,%d), (%d,%d)\n",
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|
|
441 EVENT_MSWINDOWS_MAGIC_TYPE(emacs_event),
|
|
|
442 rect->left, rect->top, rect->right, rect->bottom);
|
|
|
443 #endif
|
|
|
444 switch (EVENT_MSWINDOWS_MAGIC_TYPE(emacs_event))
|
|
|
445 {
|
|
|
446 case WM_SETFOCUS:
|
|
|
447 case WM_KILLFOCUS:
|
|
|
448 {
|
|
223
|
449 Lisp_Object frame = EVENT_CHANNEL (emacs_event);
|
|
|
450 struct frame *f = XFRAME (frame);
|
|
213
|
451 int in_p = (EVENT_MSWINDOWS_MAGIC_TYPE(emacs_event) == WM_SETFOCUS);
|
|
|
452 Lisp_Object conser;
|
|
223
|
453
|
|
213
|
454 /* struct gcpro gcpro1; */
|
|
|
455
|
|
|
456 /* Clear sticky modifiers here (if we had any) */
|
|
|
457
|
|
|
458 conser = Fcons (frame, Fcons (FRAME_DEVICE (f), in_p ? Qt : Qnil));
|
|
|
459 /* GCPRO1 (conser); XXX Not necessary? */
|
|
|
460 emacs_handle_focus_change_preliminary (conser);
|
|
|
461 /* Under X the stuff up to here is done in the X event handler.
|
|
|
462 I Don't know why */
|
|
|
463 emacs_handle_focus_change_final (conser);
|
|
|
464 /* UNGCPRO; */
|
|
223
|
465
|
|
213
|
466 }
|
|
|
467 break;
|
|
|
468
|
|
223
|
469 case XM_BUMPQUEUE:
|
|
|
470 /* This is a nice event, when we're in need to queue *something* */
|
|
|
471 break;
|
|
|
472
|
|
|
473 case XM_MAPFRAME:
|
|
|
474 case XM_UNMAPFRAME:
|
|
|
475 {
|
|
|
476 Lisp_Object frame = EVENT_CHANNEL (emacs_event);
|
|
|
477 va_run_hook_with_args (EVENT_MSWINDOWS_MAGIC_TYPE(emacs_event)
|
|
|
478 == XM_MAPFRAME ?
|
|
|
479 Qmap_frame_hook : Qunmap_frame_hook,
|
|
|
480 1, frame);
|
|
|
481 }
|
|
|
482 break;
|
|
|
483
|
|
|
484 /* XXX What about Enter & Leave */
|
|
213
|
485 #if 0
|
|
|
486 va_run_hook_with_args (in_p ? Qmouse_enter_frame_hook :
|
|
|
487 Qmouse_leave_frame_hook, 1, frame);
|
|
|
488 #endif
|
|
|
489
|
|
|
490 default:
|
|
|
491 assert(0);
|
|
|
492 }
|
|
|
493 }
|
|
|
494
|
|
|
495 static void
|
|
|
496 emacs_mswindows_select_process (struct Lisp_Process *process)
|
|
|
497 {
|
|
|
498 }
|
|
|
499
|
|
|
500 static void
|
|
|
501 emacs_mswindows_unselect_process (struct Lisp_Process *process)
|
|
|
502 {
|
|
|
503 }
|
|
|
504
|
|
|
505 static void
|
|
|
506 emacs_mswindows_select_console (struct console *con)
|
|
|
507 {
|
|
|
508 }
|
|
|
509
|
|
|
510 static void
|
|
|
511 emacs_mswindows_unselect_console (struct console *con)
|
|
|
512 {
|
|
|
513 }
|
|
|
514
|
|
|
515 static void
|
|
|
516 emacs_mswindows_quit_p (void)
|
|
|
517 {
|
|
223
|
518 mswindows_need_event (1, 0);
|
|
|
519
|
|
|
520 if (mswindows_quit_chars_count > 0)
|
|
|
521 {
|
|
|
522 /* Yes there's a hidden one... Throw it away */
|
|
|
523 struct Lisp_Event match_against;
|
|
|
524 Lisp_Object emacs_event;
|
|
|
525
|
|
|
526 match_against.event_type = key_press_event;
|
|
|
527 match_against.event.key.modifiers = FAKE_MOD_QUIT;
|
|
|
528
|
|
|
529 emacs_event = mswindows_cancel_dispatch_event (&match_against);
|
|
|
530 assert (!NILP (emacs_event));
|
|
|
531
|
|
|
532 Vquit_flag = (XEVENT(emacs_event)->event.key.modifiers & MOD_SHIFT
|
|
|
533 ? Qcritical : Qt);
|
|
|
534
|
|
|
535 Fdeallocate_event(emacs_event);
|
|
|
536 --mswindows_quit_chars_count;
|
|
|
537 }
|
|
213
|
538 }
|
|
|
539
|
|
|
540 /* This is called from GC when a process object is about to be freed.
|
|
|
541 If we've still got pointers to it in this file, we're gonna lose hard.
|
|
|
542 */
|
|
|
543 void
|
|
|
544 debug_process_finalization (struct Lisp_Process *p)
|
|
|
545 {
|
|
|
546 #if 0 /* #### */
|
|
|
547 int i;
|
|
|
548 int infd, outfd;
|
|
|
549 get_process_file_descriptors (p, &infd, &outfd);
|
|
|
550 /* if it still has fds, then it hasn't been killed yet. */
|
|
|
551 assert (infd < 0);
|
|
|
552 assert (outfd < 0);
|
|
|
553 /* Better not still be in the "with input" table; we know it's got no fds. */
|
|
|
554 for (i = 0; i < MAXDESC; i++)
|
|
|
555 {
|
|
|
556 Lisp_Object process = filedesc_fds_with_input [i];
|
|
|
557 assert (!PROCESSP (process) || XPROCESS (process) != p);
|
|
|
558 }
|
|
|
559 #endif
|
|
|
560 }
|
|
|
561
|
|
|
562 /************************************************************************/
|
|
|
563 /* initialization */
|
|
|
564 /************************************************************************/
|
|
|
565
|
|
|
566 void
|
|
|
567 vars_of_event_mswindows (void)
|
|
|
568 {
|
|
223
|
569 mswindows_u_dispatch_event_queue = Qnil;
|
|
|
570 staticpro (&mswindows_u_dispatch_event_queue);
|
|
|
571 mswindows_u_dispatch_event_queue_tail = Qnil;
|
|
|
572
|
|
|
573 mswindows_s_dispatch_event_queue = Qnil;
|
|
|
574 staticpro (&mswindows_s_dispatch_event_queue);
|
|
|
575 mswindows_s_dispatch_event_queue_tail = Qnil;
|
|
213
|
576
|
|
|
577 mswindows_event_stream = xnew (struct event_stream);
|
|
|
578
|
|
|
579 mswindows_event_stream->event_pending_p = emacs_mswindows_event_pending_p;
|
|
223
|
580 mswindows_event_stream->next_event_cb = emacs_mswindows_next_event;
|
|
213
|
581 mswindows_event_stream->handle_magic_event_cb = emacs_mswindows_handle_magic_event;
|
|
|
582 mswindows_event_stream->add_timeout_cb = emacs_mswindows_add_timeout;
|
|
|
583 mswindows_event_stream->remove_timeout_cb = emacs_mswindows_remove_timeout;
|
|
|
584 mswindows_event_stream->select_console_cb = emacs_mswindows_select_console;
|
|
223
|
585 mswindows_event_stream->unselect_console_cb = emacs_mswindows_unselect_console;
|
|
213
|
586 mswindows_event_stream->select_process_cb = emacs_mswindows_select_process;
|
|
223
|
587 mswindows_event_stream->unselect_process_cb = emacs_mswindows_unselect_process;
|
|
213
|
588 mswindows_event_stream->quit_p_cb = emacs_mswindows_quit_p;
|
|
223
|
589
|
|
|
590 DEFVAR_BOOL ("w32-dynamic-frame-resize", &mswindows_dynamic_frame_resize /*
|
|
|
591 *Controls redrawing frame contents during mouse-drag or keyboard resize
|
|
|
592 operation. When non-nil, the frame is redrawn while being resized. When
|
|
|
593 nil, frame is not redrawn, and exposed areas are filled with default
|
|
|
594 MDI application background color. Note that this option only has effect
|
|
|
595 if "Show window contents while dragging" is on in system Display/Plus!
|
|
|
596 settings.
|
|
|
597 Default is t on fast machines, nil on slow.
|
|
|
598 */ );
|
|
|
599
|
|
|
600 /* The description copied verbatim from nt-emacs. (C) Geoff Voelker */
|
|
|
601 DEFVAR_INT ("w32-mouse-button-tolerance", &mswindows_button2_chord_time /*
|
|
|
602 *Analogue of double click interval for faking middle mouse events.
|
|
|
603 The value is the minimum time in milliseconds that must elapse between
|
|
|
604 left/right button down events before they are considered distinct events.
|
|
|
605 If both mouse buttons are depressed within this interval, a middle mouse
|
|
|
606 button down event is generated instead.
|
|
|
607 If negative or zero, currently set system default is used instead.
|
|
|
608 */ );
|
|
|
609
|
|
|
610 /* The description copied verbatim from nt-emacs. (C) Geoff Voelker */
|
|
|
611 DEFVAR_INT ("w32-num-mouse-buttons", &mswindows_num_mouse_buttons /*
|
|
|
612 Number of physical mouse buttons.
|
|
|
613 */ );
|
|
|
614
|
|
|
615 DEFVAR_INT ("w32-mouse-button-max-skew-x", &mswindows_button2_max_skew_x /*
|
|
|
616 *Maximum horizontal distance in pixels between points in which left and
|
|
|
617 right button clicks occured for them to be translated into single
|
|
|
618 middle button event. Clicks must occur in time not longer than defined
|
|
|
619 by the variable w32-mouse-button-tolerance.
|
|
|
620 If negative or zero, currently set system default is used instead.
|
|
|
621 */ );
|
|
|
622
|
|
|
623 DEFVAR_INT ("w32-mouse-button-max-skew-y", &mswindows_button2_max_skew_y /*
|
|
|
624 *Maximum vertical distance in pixels between points in which left and
|
|
|
625 right button clicks occured for them to be translated into single
|
|
|
626 middle button event. Clicks must occur in time not longer than defined
|
|
|
627 by the variable w32-mouse-button-tolerance.
|
|
|
628 If negative or zero, currently set system default is used instead.
|
|
|
629 */ );
|
|
|
630
|
|
|
631 mswindows_button2_max_skew_x = 0;
|
|
|
632 mswindows_button2_max_skew_y = 0;
|
|
|
633 mswindows_button2_chord_time = 0;
|
|
213
|
634 }
|
|
|
635
|
|
|
636 void
|
|
|
637 syms_of_event_mswindows (void)
|
|
|
638 {
|
|
|
639 }
|
|
|
640
|
|
|
641 void
|
|
|
642 init_event_mswindows_late (void)
|
|
|
643 {
|
|
|
644 event_stream = mswindows_event_stream;
|
|
223
|
645
|
|
|
646 mswindows_dynamic_frame_resize = !GetSystemMetrics (SM_SLOWMACHINE);
|
|
|
647 mswindows_num_mouse_buttons = GetSystemMetrics (SM_CMOUSEBUTTONS);
|
|
213
|
648 }
|
