mirror of
https://github.com/joel16/SDL2.git
synced 2025-03-04 01:17:05 +00:00
f70b972d49
From: David Symmonds
Subject: SDL Typedef Structs
Hi, Thanks for the SDL libraries, I have been using them for about a year
now and they are really brilliant. One thing that I have just found whilst
using them through C++ (and needing forward declarations) is that when you
typedef structs you sometimes use
typedef struct Name
{
...
}Name;
e.g. SDL_Surface
and other times use
typedef struct
{
...
}Name;
e.g. SDL_Rect
The first type works fine, when I define a header file I can just put
'struct Name;' at the top and use the Name throughout. However, the second
type is harder to use in a header, and I haven't found a way yet, other than
to include 'SDL.h' in the header file (undesirable). Would there be any harm
in changing the definition of SDL_Rect and such like to the second form?
--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40912
141 lines
4.5 KiB
C
141 lines
4.5 KiB
C
/*
|
|
SDL - Simple DirectMedia Layer
|
|
Copyright (C) 1997-2004 Sam Lantinga
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2 of the License, or (at your option) any later version.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with this library; if not, write to the Free
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
Sam Lantinga
|
|
slouken@libsdl.org
|
|
*/
|
|
|
|
#ifdef SAVE_RCSID
|
|
static char rcsid =
|
|
"@(#) $Id$";
|
|
#endif
|
|
|
|
/* Include file for SDL mouse event handling */
|
|
|
|
#ifndef _SDL_mouse_h
|
|
#define _SDL_mouse_h
|
|
|
|
#include "SDL_types.h"
|
|
#include "SDL_video.h"
|
|
|
|
#include "begin_code.h"
|
|
/* Set up for C function definitions, even when using C++ */
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
typedef struct WMcursor WMcursor; /* Implementation dependent */
|
|
typedef struct SDL_Cursor {
|
|
SDL_Rect area; /* The area of the mouse cursor */
|
|
Sint16 hot_x, hot_y; /* The "tip" of the cursor */
|
|
Uint8 *data; /* B/W cursor data */
|
|
Uint8 *mask; /* B/W cursor mask */
|
|
Uint8 *save[2]; /* Place to save cursor area */
|
|
WMcursor *wm_cursor; /* Window-manager cursor */
|
|
} SDL_Cursor;
|
|
|
|
/* Function prototypes */
|
|
/*
|
|
* Retrieve the current state of the mouse.
|
|
* The current button state is returned as a button bitmask, which can
|
|
* be tested using the SDL_BUTTON(X) macros, and x and y are set to the
|
|
* current mouse cursor position. You can pass NULL for either x or y.
|
|
*/
|
|
extern DECLSPEC Uint8 SDLCALL SDL_GetMouseState(int *x, int *y);
|
|
|
|
/*
|
|
* Retrieve the current state of the mouse.
|
|
* The current button state is returned as a button bitmask, which can
|
|
* be tested using the SDL_BUTTON(X) macros, and x and y are set to the
|
|
* mouse deltas since the last call to SDL_GetRelativeMouseState().
|
|
*/
|
|
extern DECLSPEC Uint8 SDLCALL SDL_GetRelativeMouseState(int *x, int *y);
|
|
|
|
/*
|
|
* Set the position of the mouse cursor (generates a mouse motion event)
|
|
*/
|
|
extern DECLSPEC void SDLCALL SDL_WarpMouse(Uint16 x, Uint16 y);
|
|
|
|
/*
|
|
* Create a cursor using the specified data and mask (in MSB format).
|
|
* The cursor width must be a multiple of 8 bits.
|
|
*
|
|
* The cursor is created in black and white according to the following:
|
|
* data mask resulting pixel on screen
|
|
* 0 1 White
|
|
* 1 1 Black
|
|
* 0 0 Transparent
|
|
* 1 0 Inverted color if possible, black if not.
|
|
*
|
|
* Cursors created with this function must be freed with SDL_FreeCursor().
|
|
*/
|
|
extern DECLSPEC SDL_Cursor * SDLCALL SDL_CreateCursor
|
|
(Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y);
|
|
|
|
/*
|
|
* Set the currently active cursor to the specified one.
|
|
* If the cursor is currently visible, the change will be immediately
|
|
* represented on the display.
|
|
*/
|
|
extern DECLSPEC void SDLCALL SDL_SetCursor(SDL_Cursor *cursor);
|
|
|
|
/*
|
|
* Returns the currently active cursor.
|
|
*/
|
|
extern DECLSPEC SDL_Cursor * SDLCALL SDL_GetCursor(void);
|
|
|
|
/*
|
|
* Deallocates a cursor created with SDL_CreateCursor().
|
|
*/
|
|
extern DECLSPEC void SDLCALL SDL_FreeCursor(SDL_Cursor *cursor);
|
|
|
|
/*
|
|
* Toggle whether or not the cursor is shown on the screen.
|
|
* The cursor start off displayed, but can be turned off.
|
|
* SDL_ShowCursor() returns 1 if the cursor was being displayed
|
|
* before the call, or 0 if it was not. You can query the current
|
|
* state by passing a 'toggle' value of -1.
|
|
*/
|
|
extern DECLSPEC int SDLCALL SDL_ShowCursor(int toggle);
|
|
|
|
/* Used as a mask when testing buttons in buttonstate
|
|
Button 1: Left mouse button
|
|
Button 2: Middle mouse button
|
|
Button 3: Right mouse button
|
|
Button 4: Mouse wheel up (may also be a real button)
|
|
Button 5: Mouse wheel down (may also be a real button)
|
|
*/
|
|
#define SDL_BUTTON(X) (SDL_PRESSED<<(X-1))
|
|
#define SDL_BUTTON_LEFT 1
|
|
#define SDL_BUTTON_MIDDLE 2
|
|
#define SDL_BUTTON_RIGHT 3
|
|
#define SDL_BUTTON_WHEELUP 4
|
|
#define SDL_BUTTON_WHEELDOWN 5
|
|
#define SDL_BUTTON_LMASK SDL_BUTTON(SDL_BUTTON_LEFT)
|
|
#define SDL_BUTTON_MMASK SDL_BUTTON(SDL_BUTTON_MIDDLE)
|
|
#define SDL_BUTTON_RMASK SDL_BUTTON(SDL_BUTTON_RIGHT)
|
|
|
|
|
|
/* Ends C function definitions when using C++ */
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#include "close_code.h"
|
|
|
|
#endif /* _SDL_mouse_h */
|