Source

pysdl-cffi / sdl_defs / SDL_events.h

Full commit
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
/*
  Simple DirectMedia Layer
  Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
*/

/**
 *  \file SDL_events.h
 *  
 *  Include file for SDL event handling.
 */

#ifndef _SDL_events_h
#define _SDL_events_h

#include "SDL_stdinc.h"
#include "SDL_error.h"
#include "SDL_video.h"
#include "SDL_keyboard.h"
#include "SDL_mouse.h"
#include "SDL_joystick.h"
#include "SDL_quit.h"
#include "SDL_gesture.h"
#include "SDL_touch.h"

#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
/* *INDENT-OFF* */
extern "C" {
/* *INDENT-ON* */
#endif

/* General keyboard/mouse state definitions */
#define SDL_RELEASED	0
#define SDL_PRESSED	1

/**
 * \brief The types of events that can be delivered.
 */
typedef enum
{
    SDL_FIRSTEVENT     = 0,     /**< Unused (do not remove) */

    /* Application events */
    SDL_QUIT           = 0x100, /**< User-requested quit */

    /* Window events */
    SDL_WINDOWEVENT    = 0x200, /**< Window state change */
    SDL_SYSWMEVENT,             /**< System specific event */

    /* Keyboard events */
    SDL_KEYDOWN        = 0x300, /**< Key pressed */
    SDL_KEYUP,                  /**< Key released */
    SDL_TEXTEDITING,            /**< Keyboard text editing (composition) */
    SDL_TEXTINPUT,              /**< Keyboard text input */

    /* Mouse events */
    SDL_MOUSEMOTION    = 0x400, /**< Mouse moved */
    SDL_MOUSEBUTTONDOWN,        /**< Mouse button pressed */
    SDL_MOUSEBUTTONUP,          /**< Mouse button released */
    SDL_MOUSEWHEEL,             /**< Mouse wheel motion */

    /* Tablet or multiple mice input device events */
    SDL_INPUTMOTION    = 0x500, /**< Input moved */
    SDL_INPUTBUTTONDOWN,        /**< Input button pressed */
    SDL_INPUTBUTTONUP,          /**< Input button released */
    SDL_INPUTWHEEL,             /**< Input wheel motion */
    SDL_INPUTPROXIMITYIN,       /**< Input pen entered proximity */
    SDL_INPUTPROXIMITYOUT,      /**< Input pen left proximity */

    /* Joystick events */
    SDL_JOYAXISMOTION  = 0x600, /**< Joystick axis motion */
    SDL_JOYBALLMOTION,          /**< Joystick trackball motion */
    SDL_JOYHATMOTION,           /**< Joystick hat position change */
    SDL_JOYBUTTONDOWN,          /**< Joystick button pressed */
    SDL_JOYBUTTONUP,            /**< Joystick button released */

    /* Touch events */
    SDL_FINGERDOWN      = 0x700,
    SDL_FINGERUP,
    SDL_FINGERMOTION,
    SDL_TOUCHBUTTONDOWN,
    SDL_TOUCHBUTTONUP,    

    /* Gesture events */
    SDL_DOLLARGESTURE   = 0x800,
    SDL_DOLLARRECORD,
    SDL_MULTIGESTURE,

    /* Clipboard events */
    SDL_CLIPBOARDUPDATE = 0x900, /**< The clipboard changed */

    /* Drag and drop events */
    SDL_DROPFILE        = 0x1000, /**< The system requests a file open */

    /** Events ::SDL_USEREVENT through ::SDL_LASTEVENT are for your use,
     *  and should be allocated with SDL_RegisterEvents()
     */
    SDL_USEREVENT    = 0x8000,

    /**
     *  This last event is only for bounding internal arrays
     */
    SDL_LASTEVENT    = 0xFFFF
} SDL_EventType;

/**
 *  \brief Window state change event data (event.window.*)
 */
typedef struct SDL_WindowEvent
{
    Uint32 type;        /**< ::SDL_WINDOWEVENT */
    Uint32 timestamp;
    Uint32 windowID;    /**< The associated window */
    Uint8 event;        /**< ::SDL_WindowEventID */
    Uint8 padding1;
    Uint8 padding2;
    Uint8 padding3;
    int data1;          /**< event dependent data */
    int data2;          /**< event dependent data */
} SDL_WindowEvent;

/**
 *  \brief Keyboard button event structure (event.key.*)
 */
typedef struct SDL_KeyboardEvent
{
    Uint32 type;        /**< ::SDL_KEYDOWN or ::SDL_KEYUP */
    Uint32 timestamp;
    Uint32 windowID;    /**< The window with keyboard focus, if any */
    Uint8 state;        /**< ::SDL_PRESSED or ::SDL_RELEASED */
    Uint8 repeat;       /**< Non-zero if this is a key repeat */
    Uint8 padding2;
    Uint8 padding3;
    SDL_Keysym keysym;  /**< The key that was pressed or released */
} SDL_KeyboardEvent;

#define SDL_TEXTEDITINGEVENT_TEXT_SIZE (32)
/**
 *  \brief Keyboard text editing event structure (event.edit.*)
 */
typedef struct SDL_TextEditingEvent
{
    Uint32 type;                                /**< ::SDL_TEXTEDITING */
    Uint32 timestamp;
    Uint32 windowID;                            /**< The window with keyboard focus, if any */
    char text[32];  /**< The editing text */
    int start;                                  /**< The start cursor of selected editing text */
    int length;                                 /**< The length of selected editing text */
    //Uint32 padding;
} SDL_TextEditingEvent;


#define SDL_TEXTINPUTEVENT_TEXT_SIZE (32)
/**
 *  \brief Keyboard text input event structure (event.text.*)
 */
typedef struct SDL_TextInputEvent
{
    Uint32 type;                              /**< ::SDL_TEXTINPUT */
    Uint32 timestamp;
    Uint32 windowID;                          /**< The window with keyboard focus, if any */
    char text[32];  /**< The input text */
} SDL_TextInputEvent;

/**
 *  \brief Mouse motion event structure (event.motion.*)
 */
typedef struct SDL_MouseMotionEvent
{
    Uint32 type;        /**< ::SDL_MOUSEMOTION */
    Uint32 timestamp;
    Uint32 windowID;    /**< The window with mouse focus, if any */
    Uint8 state;        /**< The current button state */
    Uint8 padding1;
    Uint8 padding2;
    Uint8 padding3;
    int x;              /**< X coordinate, relative to window */
    int y;              /**< Y coordinate, relative to window */
    int xrel;           /**< The relative motion in the X direction */
    int yrel;           /**< The relative motion in the Y direction */
} SDL_MouseMotionEvent;

/**
 *  \brief Mouse button event structure (event.button.*)
 */
typedef struct SDL_MouseButtonEvent
{
    Uint32 type;        /**< ::SDL_MOUSEBUTTONDOWN or ::SDL_MOUSEBUTTONUP */
    Uint32 timestamp;
    Uint32 windowID;    /**< The window with mouse focus, if any */
    Uint8 button;       /**< The mouse button index */
    Uint8 state;        /**< ::SDL_PRESSED or ::SDL_RELEASED */
    Uint8 padding1;
    Uint8 padding2;
    int x;              /**< X coordinate, relative to window */
    int y;              /**< Y coordinate, relative to window */
} SDL_MouseButtonEvent;

/**
 *  \brief Mouse wheel event structure (event.wheel.*)
 */
typedef struct SDL_MouseWheelEvent
{
    Uint32 type;        /**< ::SDL_MOUSEWHEEL */
    Uint32 timestamp;
    Uint32 windowID;    /**< The window with mouse focus, if any */
    int x;              /**< The amount scrolled horizontally */
    int y;              /**< The amount scrolled vertically */
} SDL_MouseWheelEvent;

/**
 *  \brief Joystick axis motion event structure (event.jaxis.*)
 */
typedef struct SDL_JoyAxisEvent
{
    Uint32 type;        /**< ::SDL_JOYAXISMOTION */
    Uint32 timestamp;
    Uint8 which;        /**< The joystick device index */
    Uint8 axis;         /**< The joystick axis index */
    Uint8 padding1;
    Uint8 padding2;
    int value;          /**< The axis value (range: -32768 to 32767) */
} SDL_JoyAxisEvent;

/**
 *  \brief Joystick trackball motion event structure (event.jball.*)
 */
typedef struct SDL_JoyBallEvent
{
    Uint32 type;        /**< ::SDL_JOYBALLMOTION */
    Uint32 timestamp;
    Uint8 which;        /**< The joystick device index */
    Uint8 ball;         /**< The joystick trackball index */
    Uint8 padding1;
    Uint8 padding2;
    int xrel;           /**< The relative motion in the X direction */
    int yrel;           /**< The relative motion in the Y direction */
} SDL_JoyBallEvent;

/**
 *  \brief Joystick hat position change event structure (event.jhat.*)
 */
typedef struct SDL_JoyHatEvent
{
    Uint32 type;        /**< ::SDL_JOYHATMOTION */
    Uint32 timestamp;
    Uint8 which;        /**< The joystick device index */
    Uint8 hat;          /**< The joystick hat index */
    Uint8 value;        /**< The hat position value.
                         *   \sa ::SDL_HAT_LEFTUP ::SDL_HAT_UP ::SDL_HAT_RIGHTUP
                         *   \sa ::SDL_HAT_LEFT ::SDL_HAT_CENTERED ::SDL_HAT_RIGHT
                         *   \sa ::SDL_HAT_LEFTDOWN ::SDL_HAT_DOWN ::SDL_HAT_RIGHTDOWN
                         *   
                         *   Note that zero means the POV is centered.
                         */
    Uint8 padding1;
} SDL_JoyHatEvent;

/**
 *  \brief Joystick button event structure (event.jbutton.*)
 */
typedef struct SDL_JoyButtonEvent
{
    Uint32 type;        /**< ::SDL_JOYBUTTONDOWN or ::SDL_JOYBUTTONUP */
    Uint32 timestamp;
    Uint8 which;        /**< The joystick device index */
    Uint8 button;       /**< The joystick button index */
    Uint8 state;        /**< ::SDL_PRESSED or ::SDL_RELEASED */
    Uint8 padding1;
} SDL_JoyButtonEvent;


/**
 *  \brief Touch finger motion/finger event structure (event.tfinger.*)
 */
typedef struct SDL_TouchFingerEvent
{
    Uint32 type;        /**< ::SDL_FINGERMOTION OR 
			   SDL_FINGERDOWN OR SDL_FINGERUP*/
    Uint32 timestamp;
    Uint32 windowID;    /**< The window with mouse focus, if any */
    SDL_TouchID touchId;        /**< The touch device id */
    SDL_FingerID fingerId;
    Uint8 state;        /**< The current button state */
    Uint8 padding1;
    Uint8 padding2;
    Uint8 padding3;
    Uint16 x;
    Uint16 y;
    Sint16 dx;
    Sint16 dy;
    Uint16 pressure;
} SDL_TouchFingerEvent;


/**
 *  \brief Touch finger motion/finger event structure (event.tbutton.*)
 */
typedef struct SDL_TouchButtonEvent
{
    Uint32 type;        /**< ::SDL_TOUCHBUTTONUP OR SDL_TOUCHBUTTONDOWN */
    Uint32 timestamp;
    Uint32 windowID;    /**< The window with mouse focus, if any */
    SDL_TouchID touchId;        /**< The touch device index */
    Uint8 state;        /**< The current button state */
    Uint8 button;        /**< The button changing state */
    Uint8 padding1;
    Uint8 padding2;
} SDL_TouchButtonEvent;


/**
 *  \brief Multiple Finger Gesture Event (event.mgesture.*)
 */
typedef struct SDL_MultiGestureEvent
{
    Uint32 type;        /**< ::SDL_MULTIGESTURE */
    Uint32 timestamp;
    Uint32 windowID;    /**< The window with mouse focus, if any */
    SDL_TouchID touchId;        /**< The touch device index */
    float dTheta;
    float dDist;
    float x;  //currently 0...1. Change to screen coords?
    float y;  
    Uint16 numFingers;
    Uint16 padding;
} SDL_MultiGestureEvent;

/* (event.dgesture.*) */
typedef struct SDL_DollarGestureEvent
{
    Uint32 type;        /**< ::SDL_DOLLARGESTURE */
    Uint32 timestamp;
    Uint32 windowID;    /**< The window with mouse focus, if any */
    SDL_TouchID touchId;        /**< The touch device index */
    SDL_GestureID gestureId;
    Uint32 numFingers;
    float error;
  /*
    //TODO: Enable to give location?
    float x;  //currently 0...1. Change to screen coords?
    float y;  
  */
} SDL_DollarGestureEvent;


/**
 *  \brief An event used to request a file open by the system (event.drop.*)
 *         This event is disabled by default, you can enable it with SDL_EventState()
 *  \note If you enable this event, you must free the filename in the event.
 */
typedef struct SDL_DropEvent
{
    Uint32 type;        /**< ::SDL_DROPFILE */
    Uint32 timestamp;
    char *file;         /**< The file name, which should be freed with SDL_free() */
} SDL_DropEvent;


/**
 *  \brief The "quit requested" event
 */
typedef struct SDL_QuitEvent
{
    Uint32 type;        /**< ::SDL_QUIT */
    Uint32 timestamp;
} SDL_QuitEvent;


/**
 *  \brief A user-defined event type (event.user.*)
 */
typedef struct SDL_UserEvent
{
    Uint32 type;        /**< ::SDL_USEREVENT through ::SDL_NUMEVENTS-1 */
    Uint32 timestamp;
    Uint32 windowID;    /**< The associated window if any */
    int code;           /**< User defined event code */
    void *data1;        /**< User defined data pointer */
    void *data2;        /**< User defined data pointer */
} SDL_UserEvent;


struct SDL_SysWMmsg;
typedef struct SDL_SysWMmsg SDL_SysWMmsg;

/**
 *  \brief A video driver dependent system event (event.syswm.*)
 *         This event is disabled by default, you can enable it with SDL_EventState()
 *
 *  \note If you want to use this event, you should include SDL_syswm.h.
 */
typedef struct SDL_SysWMEvent
{
    Uint32 type;        /**< ::SDL_SYSWMEVENT */
    Uint32 timestamp;
    SDL_SysWMmsg *msg;  /**< driver dependent data, defined in SDL_syswm.h */
} SDL_SysWMEvent;

/**
 *  \brief General event structure
 */
typedef union SDL_Event
{
    Uint32 type;                    /**< Event type, shared with all events */
    SDL_WindowEvent window;         /**< Window event data */
    SDL_KeyboardEvent key;          /**< Keyboard event data */
    SDL_TextEditingEvent edit;      /**< Text editing event data */
    SDL_TextInputEvent text;        /**< Text input event data */
    SDL_MouseMotionEvent motion;    /**< Mouse motion event data */
    SDL_MouseButtonEvent button;    /**< Mouse button event data */
    SDL_MouseWheelEvent wheel;      /**< Mouse wheel event data */
    SDL_JoyAxisEvent jaxis;         /**< Joystick axis event data */
    SDL_JoyBallEvent jball;         /**< Joystick ball event data */
    SDL_JoyHatEvent jhat;           /**< Joystick hat event data */
    SDL_JoyButtonEvent jbutton;     /**< Joystick button event data */
    SDL_QuitEvent quit;             /**< Quit request event data */
    SDL_UserEvent user;             /**< Custom event data */
    SDL_SysWMEvent syswm;           /**< System dependent window event data */
    SDL_TouchFingerEvent tfinger;   /**< Touch finger event data */
    SDL_TouchButtonEvent tbutton;   /**< Touch button event data */
    SDL_MultiGestureEvent mgesture; /**< Multi Finger Gesture data */
    SDL_DollarGestureEvent dgesture; /**< Multi Finger Gesture data */
    SDL_DropEvent drop;             /**< Drag and drop event data */
} SDL_Event;


/* Function prototypes */

/**
 *  Pumps the event loop, gathering events from the input devices.
 *  
 *  This function updates the event queue and internal input device state.
 *  
 *  This should only be run in the thread that sets the video mode.
 */
extern DECLSPEC void SDLCALL SDL_PumpEvents(void);

/*@{*/
typedef enum
{
    SDL_ADDEVENT,
    SDL_PEEKEVENT,
    SDL_GETEVENT
} SDL_eventaction;

/**
 *  Checks the event queue for messages and optionally returns them.
 *  
 *  If \c action is ::SDL_ADDEVENT, up to \c numevents events will be added to
 *  the back of the event queue.
 *  
 *  If \c action is ::SDL_PEEKEVENT, up to \c numevents events at the front
 *  of the event queue, within the specified minimum and maximum type,
 *  will be returned and will not be removed from the queue.
 *  
 *  If \c action is ::SDL_GETEVENT, up to \c numevents events at the front 
 *  of the event queue, within the specified minimum and maximum type,
 *  will be returned and will be removed from the queue.
 *  
 *  \return The number of events actually stored, or -1 if there was an error.
 *  
 *  This function is thread-safe.
 */
extern DECLSPEC int SDLCALL SDL_PeepEvents(SDL_Event * events, int numevents,
                                           SDL_eventaction action,
                                           Uint32 minType, Uint32 maxType);
/*@}*/

/**
 *  Checks to see if certain event types are in the event queue.
 */
extern DECLSPEC SDL_bool SDLCALL SDL_HasEvent(Uint32 type);
extern DECLSPEC SDL_bool SDLCALL SDL_HasEvents(Uint32 minType, Uint32 maxType);

/**
 *  This function clears events from the event queue
 */
extern DECLSPEC void SDLCALL SDL_FlushEvent(Uint32 type);
extern DECLSPEC void SDLCALL SDL_FlushEvents(Uint32 minType, Uint32 maxType);

/**
 *  \brief Polls for currently pending events.
 *  
 *  \return 1 if there are any pending events, or 0 if there are none available.
 *  
 *  \param event If not NULL, the next event is removed from the queue and 
 *               stored in that area.
 */
extern DECLSPEC int SDLCALL SDL_PollEvent(SDL_Event * event);

/**
 *  \brief Waits indefinitely for the next available event.
 *  
 *  \return 1, or 0 if there was an error while waiting for events.
 *   
 *  \param event If not NULL, the next event is removed from the queue and 
 *               stored in that area.
 */
extern DECLSPEC int SDLCALL SDL_WaitEvent(SDL_Event * event);

/**
 *  \brief Waits until the specified timeout (in milliseconds) for the next 
 *         available event.
 *  
 *  \return 1, or 0 if there was an error while waiting for events.
 *  
 *  \param event If not NULL, the next event is removed from the queue and 
 *               stored in that area.
 */
extern DECLSPEC int SDLCALL SDL_WaitEventTimeout(SDL_Event * event,
                                                 int timeout);

/**
 *  \brief Add an event to the event queue.
 *  
 *  \return 1 on success, 0 if the event was filtered, or -1 if the event queue 
 *          was full or there was some other error.
 */
extern DECLSPEC int SDLCALL SDL_PushEvent(SDL_Event * event);

typedef int (SDLCALL * SDL_EventFilter) (void *userdata, SDL_Event * event);

/**
 *  Sets up a filter to process all events before they change internal state and
 *  are posted to the internal event queue.
 *  
 *  The filter is protypted as:
 *  \code
 *      int SDL_EventFilter(void *userdata, SDL_Event * event);
 *  \endcode
 *
 *  If the filter returns 1, then the event will be added to the internal queue.
 *  If it returns 0, then the event will be dropped from the queue, but the 
 *  internal state will still be updated.  This allows selective filtering of
 *  dynamically arriving events.
 *  
 *  \warning  Be very careful of what you do in the event filter function, as 
 *            it may run in a different thread!
 *  
 *  There is one caveat when dealing with the ::SDL_QUITEVENT event type.  The
 *  event filter is only called when the window manager desires to close the
 *  application window.  If the event filter returns 1, then the window will
 *  be closed, otherwise the window will remain open if possible.
 *
 *  If the quit event is generated by an interrupt signal, it will bypass the
 *  internal queue and be delivered to the application at the next event poll.
 */
extern DECLSPEC void SDLCALL SDL_SetEventFilter(SDL_EventFilter filter,
                                                void *userdata);

/**
 *  Return the current event filter - can be used to "chain" filters.
 *  If there is no event filter set, this function returns SDL_FALSE.
 */
extern DECLSPEC SDL_bool SDLCALL SDL_GetEventFilter(SDL_EventFilter * filter,
                                                    void **userdata);

/**
 *  Add a function which is called when an event is added to the queue.
 */
extern DECLSPEC void SDLCALL SDL_AddEventWatch(SDL_EventFilter filter,
                                               void *userdata);

/**
 *  Remove an event watch function added with SDL_AddEventWatch()
 */
extern DECLSPEC void SDLCALL SDL_DelEventWatch(SDL_EventFilter filter,
                                               void *userdata);

/**
 *  Run the filter function on the current event queue, removing any
 *  events for which the filter returns 0.
 */
extern DECLSPEC void SDLCALL SDL_FilterEvents(SDL_EventFilter filter,
                                              void *userdata);

/*@{*/
#define SDL_QUERY	-1
#define SDL_IGNORE	 0
#define SDL_DISABLE	 0
#define SDL_ENABLE	 1

/**
 *  This function allows you to set the state of processing certain events.
 *   - If \c state is set to ::SDL_IGNORE, that event will be automatically 
 *     dropped from the event queue and will not event be filtered.
 *   - If \c state is set to ::SDL_ENABLE, that event will be processed 
 *     normally.
 *   - If \c state is set to ::SDL_QUERY, SDL_EventState() will return the 
 *     current processing state of the specified event.
 */
extern DECLSPEC Uint8 SDLCALL SDL_EventState(Uint32 type, int state);
/*@}*/
#define SDL_GetEventState(type) SDL_EventState(type, SDL_QUERY)

/**
 *  This function allocates a set of user-defined events, and returns
 *  the beginning event number for that set of events.
 *
 *  If there aren't enough user-defined events left, this function
 *  returns (Uint32)-1
 */
extern DECLSPEC Uint32 SDLCALL SDL_RegisterEvents(int numevents);

/* Ends C function definitions when using C++ */
#ifdef __cplusplus
/* *INDENT-OFF* */
}
/* *INDENT-ON* */
#endif
#include "close_code.h"

#endif /* _SDL_events_h */

/* vi: set ts=4 sw=4 expandtab: */