4 * Freeglut state query methods.
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6 * Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
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7 * Written by Pawel W. Olszta, <olszta@sourceforge.net>
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8 * Creation date: Thu Dec 16 1999
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10 * Permission is hereby granted, free of charge, to any person obtaining a
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11 * copy of this software and associated documentation files (the "Software"),
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12 * to deal in the Software without restriction, including without limitation
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13 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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14 * and/or sell copies of the Software, and to permit persons to whom the
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15 * Software is furnished to do so, subject to the following conditions:
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17 * The above copyright notice and this permission notice shall be included
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18 * in all copies or substantial portions of the Software.
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20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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23 * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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24 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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25 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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28 #include <GL/freeglut.h>
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29 #include "freeglut_internal.h"
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32 * TODO BEFORE THE STABLE RELEASE:
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34 * glutGet() -- X11 tests passed, but check if all enums
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35 * handled (what about Win32?)
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36 * glutDeviceGet() -- X11 tests passed, but check if all enums
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37 * handled (what about Win32?)
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38 * glutGetModifiers() -- OK, but could also remove the limitation
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39 * glutLayerGet() -- what about GLUT_NORMAL_DAMAGED?
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41 * The fail-on-call policy will help adding the most needed things imho.
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44 extern int fgPlatformGlutGet ( GLenum eWhat );
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45 extern int fgPlatformGlutDeviceGet ( GLenum eWhat );
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46 extern int fgPlatformGlutLayerGet ( GLenum eWhat );
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47 extern int *fgPlatformGlutGetModeValues(GLenum eWhat, int *size);
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50 /* -- LOCAL DEFINITIONS ---------------------------------------------------- */
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52 /* -- PRIVATE FUNCTIONS ---------------------------------------------------- */
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55 /* -- INTERFACE FUNCTIONS -------------------------------------------------- */
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58 * General settings assignment method
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60 void FGAPIENTRY glutSetOption( GLenum eWhat, int value )
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62 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetOption" );
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65 * XXX In chronological code add order. (WHY in that order?)
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69 case GLUT_INIT_WINDOW_X:
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70 fgState.Position.X = (GLint)value;
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73 case GLUT_INIT_WINDOW_Y:
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74 fgState.Position.Y = (GLint)value;
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77 case GLUT_INIT_WINDOW_WIDTH:
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78 fgState.Size.X = (GLint)value;
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81 case GLUT_INIT_WINDOW_HEIGHT:
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82 fgState.Size.Y = (GLint)value;
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85 case GLUT_INIT_DISPLAY_MODE:
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86 fgState.DisplayMode = (unsigned int)value;
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89 case GLUT_ACTION_ON_WINDOW_CLOSE:
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90 fgState.ActionOnWindowClose = value;
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93 case GLUT_RENDERING_CONTEXT:
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94 fgState.UseCurrentContext =
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95 ( value == GLUT_USE_CURRENT_CONTEXT ) ? GL_TRUE : GL_FALSE;
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98 case GLUT_DIRECT_RENDERING:
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99 fgState.DirectContext = value;
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102 case GLUT_WINDOW_CURSOR:
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103 if( fgStructure.CurrentWindow != NULL )
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104 fgStructure.CurrentWindow->State.Cursor = value;
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108 fgState.AuxiliaryBufferNumber = value;
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111 case GLUT_MULTISAMPLE:
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112 fgState.SampleNumber = value;
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116 fgWarning( "glutSetOption(): missing enum handle %d", eWhat );
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122 * General settings query method
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124 int FGAPIENTRY glutGet( GLenum eWhat )
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128 case GLUT_INIT_STATE:
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129 return fgState.Initialised;
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131 case GLUT_ELAPSED_TIME:
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132 return fgElapsedTime();
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135 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGet" );
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137 /* XXX In chronological code add order. (WHY in that order?) */
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140 /* Following values are stored in fgState and fgDisplay global structures */
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141 case GLUT_SCREEN_WIDTH: return fgDisplay.ScreenWidth ;
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142 case GLUT_SCREEN_HEIGHT: return fgDisplay.ScreenHeight ;
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143 case GLUT_SCREEN_WIDTH_MM: return fgDisplay.ScreenWidthMM ;
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144 case GLUT_SCREEN_HEIGHT_MM: return fgDisplay.ScreenHeightMM;
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145 case GLUT_INIT_WINDOW_X: return fgState.Position.Use ?
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146 fgState.Position.X : -1 ;
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147 case GLUT_INIT_WINDOW_Y: return fgState.Position.Use ?
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148 fgState.Position.Y : -1 ;
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149 case GLUT_INIT_WINDOW_WIDTH: return fgState.Size.Use ?
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150 fgState.Size.X : -1 ;
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151 case GLUT_INIT_WINDOW_HEIGHT: return fgState.Size.Use ?
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152 fgState.Size.Y : -1 ;
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153 case GLUT_INIT_DISPLAY_MODE: return fgState.DisplayMode ;
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154 case GLUT_INIT_MAJOR_VERSION: return fgState.MajorVersion ;
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155 case GLUT_INIT_MINOR_VERSION: return fgState.MinorVersion ;
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156 case GLUT_INIT_FLAGS: return fgState.ContextFlags ;
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157 case GLUT_INIT_PROFILE: return fgState.ContextProfile ;
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159 /* The window structure queries */
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160 case GLUT_WINDOW_PARENT:
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161 if( fgStructure.CurrentWindow == NULL ) return 0;
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162 if( fgStructure.CurrentWindow->Parent == NULL ) return 0;
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163 return fgStructure.CurrentWindow->Parent->ID;
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165 case GLUT_WINDOW_NUM_CHILDREN:
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166 if( fgStructure.CurrentWindow == NULL )
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168 return fgListLength( &fgStructure.CurrentWindow->Children );
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170 case GLUT_WINDOW_CURSOR:
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171 if( fgStructure.CurrentWindow == NULL )
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173 return fgStructure.CurrentWindow->State.Cursor;
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175 case GLUT_MENU_NUM_ITEMS:
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176 if( fgStructure.CurrentMenu == NULL )
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178 return fgListLength( &fgStructure.CurrentMenu->Entries );
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180 case GLUT_ACTION_ON_WINDOW_CLOSE:
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181 return fgState.ActionOnWindowClose;
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183 case GLUT_VERSION :
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184 return VERSION_MAJOR * 10000 + VERSION_MINOR * 100 + VERSION_PATCH;
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186 case GLUT_RENDERING_CONTEXT:
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187 return fgState.UseCurrentContext ? GLUT_USE_CURRENT_CONTEXT
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188 : GLUT_CREATE_NEW_CONTEXT;
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190 case GLUT_DIRECT_RENDERING:
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191 return fgState.DirectContext;
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193 case GLUT_FULL_SCREEN:
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194 return fgStructure.CurrentWindow->State.IsFullscreen;
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197 return fgState.AuxiliaryBufferNumber;
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199 case GLUT_MULTISAMPLE:
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200 return fgState.SampleNumber;
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203 return fgPlatformGlutGet ( eWhat );
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210 * Returns various device information.
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212 int FGAPIENTRY glutDeviceGet( GLenum eWhat )
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214 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutDeviceGet" );
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216 /* XXX WARNING: we are mostly lying in this function. */
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219 case GLUT_HAS_JOYSTICK:
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220 return fgJoystickDetect ();
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222 case GLUT_OWNS_JOYSTICK:
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223 return fgState.JoysticksInitialised;
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225 case GLUT_JOYSTICK_POLL_RATE:
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226 return fgStructure.CurrentWindow ? fgStructure.CurrentWindow->State.JoystickPollRate : 0;
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228 /* XXX The following two are only for Joystick 0 but this is an improvement */
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229 case GLUT_JOYSTICK_BUTTONS:
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230 return glutJoystickGetNumButtons ( 0 );
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232 case GLUT_JOYSTICK_AXES:
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233 return glutJoystickGetNumAxes ( 0 );
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235 case GLUT_HAS_DIAL_AND_BUTTON_BOX:
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236 return fgInputDeviceDetect ();
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238 case GLUT_NUM_DIALS:
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239 if ( fgState.InputDevsInitialised ) return 8;
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242 case GLUT_NUM_BUTTON_BOX_BUTTONS:
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245 case GLUT_HAS_SPACEBALL:
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246 return fgHasSpaceball();
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248 case GLUT_HAS_TABLET:
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251 case GLUT_NUM_SPACEBALL_BUTTONS:
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252 return fgSpaceballNumButtons();
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254 case GLUT_NUM_TABLET_BUTTONS:
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257 case GLUT_DEVICE_IGNORE_KEY_REPEAT:
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258 return fgStructure.CurrentWindow ? fgStructure.CurrentWindow->State.IgnoreKeyRepeat : 0;
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260 case GLUT_DEVICE_KEY_REPEAT:
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261 return fgState.KeyRepeat;
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264 return fgPlatformGlutDeviceGet ( eWhat );
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267 /* And now -- the failure. */
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272 * This should return the current state of ALT, SHIFT and CTRL keys.
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274 int FGAPIENTRY glutGetModifiers( void )
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276 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGetModifiers" );
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277 if( fgState.Modifiers == INVALID_MODIFIERS )
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279 fgWarning( "glutGetModifiers() called outside an input callback" );
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283 return fgState.Modifiers;
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287 * Return the state of the GLUT API overlay subsystem. A misery ;-)
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289 int FGAPIENTRY glutLayerGet( GLenum eWhat )
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291 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutLayerGet" );
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294 * This is easy as layers are not implemented ;-)
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296 * XXX Can we merge the UNIX/X11 and WIN32 sections? Or
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297 * XXX is overlay support planned?
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303 return fgPlatformGlutLayerGet( eWhat );
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306 /* And fail. That's good. Programs do love failing. */
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310 int * FGAPIENTRY glutGetModeValues(GLenum eWhat, int *size)
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314 FREEGLUT_EXIT_IF_NOT_INITIALISED("glutGetModeValues");
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317 array = fgPlatformGlutGetModeValues ( eWhat, size );
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322 /*** END OF FILE ***/
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