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annotate include/SDL_mouse.h @ 2203:fca1cdc673b2

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Fixed bug #428 This fix is overkill, but approved by Doug Lea, and he'll be releasing a new version of his malloc.c sometime next month.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 16 Jul 2007 00:08:35 +0000
parents c121d94672cb
children 313112f9ac5c
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 /**
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24 * \file SDL_mouse.h
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25 *
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26 * Include file for SDL mouse event handling
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27 */
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28
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29 #ifndef _SDL_mouse_h
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30 #define _SDL_mouse_h
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31
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32 #include "SDL_stdinc.h"
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33 #include "SDL_error.h"
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34 #include "SDL_video.h"
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35
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36 #include "begin_code.h"
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37 /* Set up for C function definitions, even when using C++ */
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38 #ifdef __cplusplus
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39 /* *INDENT-OFF* */
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40 extern "C" {
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41 /* *INDENT-ON* */
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42 #endif
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43
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44 typedef struct SDL_Cursor SDL_Cursor; /* Implementation dependent */
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45
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46 /* Function prototypes */
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47
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48 /**
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49 * \fn int SDL_GetNumMice(void)
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50 *
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51 * \brief Get the number of mouse input devices available.
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52 *
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53 * \sa SDL_SelectMouse()
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54 */
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55 extern DECLSPEC int SDLCALL SDL_GetNumMice(void);
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56
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57 /**
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58 * \fn int SDL_SelectMouse(int index)
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59 *
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60 * \brief Set the index of the currently selected mouse.
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61 *
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62 * \return The index of the previously selected mouse.
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63 *
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64 * \note You can query the currently selected mouse by passing an index of -1.
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65 *
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66 * \sa SDL_GetNumMice()
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67 */
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68 extern DECLSPEC int SDLCALL SDL_SelectMouse(int index);
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69
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70 /**
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71 * \fn SDL_WindowID SDL_GetMouseFocusWindow(void)
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72 *
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73 * \brief Get the window which currently has focus for the currently selected mouse.
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74 */
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75 extern DECLSPEC SDL_WindowID SDLCALL SDL_GetMouseFocusWindow(void);
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76
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77 /**
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78 * \fn int SDL_SetRelativeMouseMode(SDL_bool enabled)
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79 *
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80 * \brief Set relative mouse mode for the currently selected mouse.
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81 *
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82 * \param enabled Whether or not to enable relative mode
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83 *
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84 * \return 0 on success, or -1 if relative mode is not supported.
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85 *
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86 * While the mouse is in relative mode, the cursor is hidden, and the
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87 * driver will try to report continuous motion in the current window.
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88 * Only relative motion events will be delivered, the mouse position
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89 * will not change.
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90 *
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91 * \note This function will flush any pending mouse motion.
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92 *
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93 * \sa SDL_GetRelativeMouseMode()
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94 */
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95 extern DECLSPEC int SDLCALL SDL_SetRelativeMouseMode(SDL_bool enabled);
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96
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97 /**
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98 * \fn SDL_bool SDL_GetRelativeMouseMode()
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99 *
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100 * \brief Query whether relative mouse mode is enabled for the currently selected mouse.
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101 *
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102 * \sa SDL_SetRelativeMouseMode()
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103 */
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104 extern DECLSPEC SDL_bool SDLCALL SDL_GetRelativeMouseMode();
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105
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106 /**
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107 * \fn Uint8 SDL_GetMouseState(int *x, int *y)
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108 *
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109 * \brief Retrieve the current state of the currently selected mouse.
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110 *
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111 * The current button state is returned as a button bitmask, which can
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112 * be tested using the SDL_BUTTON(X) macros, and x and y are set to the
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113 * mouse cursor position relative to the focus window for the currently
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114 * selected mouse. You can pass NULL for either x or y.
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115 */
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116 extern DECLSPEC Uint8 SDLCALL SDL_GetMouseState(int *x, int *y);
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117
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118 /**
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119 * \fn Uint8 SDL_GetRelativeMouseState(int *x, int *y)
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120 *
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121 * \brief Retrieve the state of the currently selected mouse.
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122 *
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123 * The current button state is returned as a button bitmask, which can
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124 * be tested using the SDL_BUTTON(X) macros, and x and y are set to the
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125 * mouse deltas since the last call to SDL_GetRelativeMouseState().
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126 */
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127 extern DECLSPEC Uint8 SDLCALL SDL_GetRelativeMouseState(int *x, int *y);
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128
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129 /**
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130 * \fn void SDL_WarpMouseInWindow(SDL_WindowID windowID, int x, int y)
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131 *
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132 * \brief Moves the currently selected mouse to the given position within the window.
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133 *
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134 * \param windowID The window to move the mouse into, or 0 for the current mouse focus
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135 * \param x The x coordinate within the window
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136 * \param y The y coordinate within the window
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137 *
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138 * \note This function generates a mouse motion event
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139 */
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140 extern DECLSPEC void SDLCALL SDL_WarpMouseInWindow(SDL_WindowID windowID,
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141 int x, int y);
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142
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143 /**
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144 * \fn SDL_Cursor *SDL_CreateCursor (const Uint8 * data, const Uint8 * mask, int w, int h, int hot_x, int hot_y)
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145 *
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146 * \brief Create a cursor for the currently selected mouse, using the
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147 * specified bitmap data and mask (in MSB format).
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148 *
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149 * The cursor width must be a multiple of 8 bits.
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150 *
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151 * The cursor is created in black and white according to the following:
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152 * data mask resulting pixel on screen
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153 * 0 1 White
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154 * 1 1 Black
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155 * 0 0 Transparent
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156 * 1 0 Inverted color if possible, black if not.
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157 *
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158 * \sa SDL_FreeCursor()
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159 */
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160 extern DECLSPEC SDL_Cursor *SDLCALL SDL_CreateCursor(const Uint8 * data,
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161 const Uint8 * mask,
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162 int w, int h, int hot_x,
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163 int hot_y);
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164
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165 /**
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166 * \fn void SDL_SetCursor(SDL_Cursor * cursor)
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167 *
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168 * \brief Set the active cursor for the currently selected mouse.
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169 *
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170 * \note The cursor must have been created for the selected mouse.
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171 */
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172 extern DECLSPEC void SDLCALL SDL_SetCursor(SDL_Cursor * cursor);
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173
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174 /**
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175 * \fn SDL_Cursor *SDL_GetCursor(void)
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176 *
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177 * \brief Return the active cursor for the currently selected mouse.
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178 */
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179 extern DECLSPEC SDL_Cursor *SDLCALL SDL_GetCursor(void);
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180
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181 /**
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182 * \fn void SDL_FreeCursor(SDL_Cursor * cursor)
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183 *
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184 * \brief Frees a cursor created with SDL_CreateCursor().
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185 *
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186 * \sa SDL_CreateCursor()
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187 */
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188 extern DECLSPEC void SDLCALL SDL_FreeCursor(SDL_Cursor * cursor);
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189
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190 /**
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191 * \fn int SDL_ShowCursor(int toggle)
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192 *
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193 * \brief Toggle whether or not the cursor is shown for the currently selected mouse.
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194 *
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195 * \param toggle 1 to show the cursor, 0 to hide it, -1 to query the current state.
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196 *
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197 * \return 1 if the cursor is shown, or 0 if the cursor is hidden.
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198 */
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199 extern DECLSPEC int SDLCALL SDL_ShowCursor(int toggle);
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200
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201 /* Used as a mask when testing buttons in buttonstate
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202 Button 1: Left mouse button
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203 Button 2: Middle mouse button
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204 Button 3: Right mouse button
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205 */
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206 #define SDL_BUTTON(X) (1 << ((X)-1))
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207 #define SDL_BUTTON_LEFT 1
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208 #define SDL_BUTTON_MIDDLE 2
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209 #define SDL_BUTTON_RIGHT 3
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210 #define SDL_BUTTON_LMASK SDL_BUTTON(SDL_BUTTON_LEFT)
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211 #define SDL_BUTTON_MMASK SDL_BUTTON(SDL_BUTTON_MIDDLE)
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212 #define SDL_BUTTON_RMASK SDL_BUTTON(SDL_BUTTON_RIGHT)
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213
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214
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215 /* Ends C function definitions when using C++ */
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216 #ifdef __cplusplus
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217 /* *INDENT-OFF* */
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218 }
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219 /* *INDENT-ON* */
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220 #endif
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221 #include "close_code.h"
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222
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223 #endif /* _SDL_mouse_h */
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224
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225 /* vi: set ts=4 sw=4 expandtab: */