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annotate include/SDL_syswm.h @ 4902:50d0bff24d81

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Make the union nameless to reduce the complexity of the API. (Are there any compilers still in use that don't support this?)
author Sam Lantinga <slouken@libsdl.org>
date Wed, 29 Sep 2010 21:13:52 -0700
parents 69d9db65f248
children f50c7996d925
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2010 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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18
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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_syswm.h
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25 *
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26 * Include file for SDL custom system window manager hooks.
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27 */
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28
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29 #ifndef _SDL_syswm_h
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30 #define _SDL_syswm_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 #include "SDL_version.h"
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36
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37 #include "begin_code.h"
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38 /* Set up for C function definitions, even when using C++ */
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39 #ifdef __cplusplus
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40 /* *INDENT-OFF* */
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41 extern "C" {
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42 /* *INDENT-ON* */
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43 #endif
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44
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45 /**
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46 * \file SDL_syswm.h
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47 *
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48 * Your application has access to a special type of event ::SDL_SYSWMEVENT,
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49 * which contains window-manager specific information and arrives whenever
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50 * an unhandled window event occurs. This event is ignored by default, but
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51 * you can enable it with SDL_EventState().
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52 */
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53 #ifdef SDL_PROTOTYPES_ONLY
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54 struct SDL_SysWMinfo;
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55 #else
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56
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57 #if defined(SDL_VIDEO_DRIVER_WIN32)
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58 #define WIN32_LEAN_AND_MEAN
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59 #include <windows.h>
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60 #endif
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61
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62 /* This is the structure for custom window manager events */
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63 #if defined(SDL_VIDEO_DRIVER_X11)
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64 #if defined(__APPLE__) && defined(__MACH__)
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65 /* conflicts with Quickdraw.h */
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66 #define Cursor X11Cursor
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67 #endif
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68
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69 #include <X11/Xlib.h>
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70 #include <X11/Xatom.h>
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71
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72 #if defined(__APPLE__) && defined(__MACH__)
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73 /* matches the re-define above */
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74 #undef Cursor
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75 #endif
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76
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77 #endif /* defined(SDL_VIDEO_DRIVER_X11) */
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78
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79 #if defined(SDL_VIDEO_DRIVER_DIRECTFB)
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80 #include <directfb/directfb.h>
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81 #endif
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82
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83 #if defined(SDL_VIDEO_DRIVER_COCOA)
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84 #ifdef __OBJC__
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85 #include <Cocoa/Cocoa.h>
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86 #else
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87 typedef struct _NSWindow NSWindow;
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88 #endif
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89 #endif
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90
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91 /**
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92 * These are the various supported windowing subsystems
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93 */
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94 typedef enum
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95 {
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96 SDL_SYSWM_UNKNOWN,
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97 SDL_SYSWM_WINDOWS,
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98 SDL_SYSWM_X11,
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99 SDL_SYSWM_DIRECTFB,
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100 SDL_SYSWM_COCOA,
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101 } SDL_SYSWM_TYPE;
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102
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103 /**
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104 * The custom event structure.
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105 */
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106 struct SDL_SysWMmsg
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107 {
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108 SDL_version version;
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109 SDL_SYSWM_TYPE subsystem;
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110 union
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111 {
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112 #if defined(SDL_VIDEO_DRIVER_WIN32)
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113 struct {
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114 HWND hwnd; /**< The window for the message */
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115 UINT msg; /**< The type of message */
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116 WPARAM wParam; /**< WORD message parameter */
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117 LPARAM lParam; /**< LONG message parameter */
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118 } win;
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119 #endif
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120 #if defined(SDL_VIDEO_DRIVER_X11)
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121 struct {
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122 XEvent event;
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123 } x11;
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124 #endif
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125 #if defined(SDL_VIDEO_DRIVER_DIRECTFB)
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126 struct {
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127 DFBEvent event;
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128 } dfb;
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129 #endif
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130 #if defined(SDL_VIDEO_DRIVER_COCOA)
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131 struct
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132 {
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133 /* No Cocoa window events yet */
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134 } cocoa;
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135 #endif
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136 } /*msg*/;
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137 };
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138
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139 /**
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140 * The custom window manager information structure.
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141 *
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142 * When this structure is returned, it holds information about which
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143 * low level system it is using, and will be one of SDL_SYSWM_TYPE.
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144 */
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145 struct SDL_SysWMinfo
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146 {
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147 SDL_version version;
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148 SDL_SYSWM_TYPE subsystem;
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149 union
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150 {
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151 #if defined(SDL_VIDEO_DRIVER_WIN32)
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152 struct
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153 {
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154 HWND window; /**< The Win32 display window */
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155 } win;
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156 #endif
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157 #if defined(SDL_VIDEO_DRIVER_X11)
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158 struct
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159 {
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160 Display *display; /**< The X11 display */
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161 Window window; /**< The X11 display window */
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162 } x11;
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163 #endif
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164 #if defined(SDL_VIDEO_DRIVER_DIRECTFB)
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165 struct
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166 {
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167 IDirectFB *dfb; /**< The directfb main interface */
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168 IDirectFBWindow *window; /**< The directfb window handle */
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169 IDirectFBSurface *surface; /**< The directfb client surface */
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170 } dfb;
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171 #endif
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172 #if defined(SDL_VIDEO_DRIVER_COCOA)
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173 struct
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174 {
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175 NSWindow *window;
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176 } cocoa;
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177 #endif
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178 } /*info*/;
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179 };
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180
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181 #endif /* SDL_PROTOTYPES_ONLY */
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182
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183 typedef struct SDL_SysWMinfo SDL_SysWMinfo;
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184
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185 /* Function prototypes */
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186 /**
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187 * \brief This function allows access to driver-dependent window information.
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188 *
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189 * \param window The window about which information is being requested
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190 * \param info This structure must be initialized with the SDL version, and is
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191 * then filled in with information about the given window.
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192 *
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193 * \return SDL_TRUE if the function is implemented and the version member of
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194 * the \c info struct is valid, SDL_FALSE otherwise.
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195 *
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196 * You typically use this function like this:
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197 * \code
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198 * SDL_SysWMinfo info;
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199 * SDL_VERSION(&info.version);
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200 * if ( SDL_GetWindowWMInfo(&info) ) { ... }
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201 * \endcode
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202 */
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203 extern DECLSPEC SDL_bool SDLCALL SDL_GetWindowWMInfo(SDL_Window * window,
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204 SDL_SysWMinfo * info);
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205
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206
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207 /* Ends C function definitions when using C++ */
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208 #ifdef __cplusplus
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209 /* *INDENT-OFF* */
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210 }
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211 /* *INDENT-ON* */
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212 #endif
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213 #include "close_code.h"
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214
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215 #endif /* _SDL_syswm_h */
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216
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217 /* vi: set ts=4 sw=4 expandtab: */