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git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@83 7f0cb862-5218-0410-a997-914c9d46530a
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@ -1063,6 +1063,67 @@ is not implemented in <i>freeglut</i>. </p>
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<h2> 13.2 glutGet</h2>
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<p>
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The following state variables may be queried with glutGet.
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The returned value is an integer.
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</p>
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<p>
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These queries are with respect to the current window:
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</p>
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<ul>
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<li>GLUT_WINDOW_X - window X position
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<li>GLUT_WINDOW_Y - window Y position
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<li>GLUT_WINDOW_WIDTH - window width
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<li>GLUT_WINDOW_HEIGHT - window height
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<li>GLUT_WINDOW_BUFFER_SIZE - number of color or color index bits per pixel
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<li>GLUT_WINDOW_STENCIL_SIZE - number of bits per stencil value
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<li>GLUT_WINDOW_DEPTH_SIZE - number of bits per depth value
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<li>GLUT_WINDOW_RED_SIZE - number of bits per red value
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<li>GLUT_WINDOW_GREEN_SIZE - number of bits per green value
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<li>GLUT_WINDOW_BLUE_SIZE - number of bits per blue value
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<li>GLUT_WINDOW_ALPHA_SIZE - number of bits per alpha value
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<li>GLUT_WINDOW_ACCUM_RED_SIZE - number of red bits in the accumulation buffer
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<li>GLUT_WINDOW_ACCUM_GREEN_SIZE - number of green bits in the accumulation buffer
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<li>GLUT_WINDOW_ACCUM_BLUE_SIZE - number of blue bits in the accumulation buffer
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<li>GLUT_WINDOW_ACCUM_ALPHA_SIZE - number of alpha bits in the accumulation buffer
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<li>GLUT_WINDOW_DOUBLEBUFFER - 1 if the color buffer is double buffered, 0 otherwise
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<li>GLUT_WINDOW_RGBA - 1 if the color buffers are RGB[A], 0 for color index
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<li>GLUT_WINDOW_PARENT - parent window ID
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<li>GLUT_WINDOW_NUM_CHILDREN - number of child windows
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<li>GLUT_WINDOW_COLORMAP_SIZE - number of entries in the window's colormap
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<li>GLUT_WINDOW_NUM_SAMPLES - number of samples per pixel if using multisampling
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<li>GLUT_WINDOW_STEREO - 1 if the window supports stereo, 0 otherwise
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<li>GLUT_WINDOW_CURSOR - current cursor
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<li>GLUT_WINDOW_FORMAT_ID - on Windows, return the pixel format number of the current window
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</ul>
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<p>
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These queries do not depend on the current window.
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</p>
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<ul>
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<li>GLUT_SCREEN_WIDTH - width of the screen in pixels
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<li>GLUT_SCREEN_HEIGHT - height of the screen in pixels
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<li>GLUT_SCREEN_WIDTH_MM - width of the screen in millimeters
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<li>GLUT_SCREEN_HEIGHT_MM - height of the screen in millimeters
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<li>GLUT_MENU_NUM_ITEMS - number of items in the current menu
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<li>GLUT_DISPLAY_MODE_POSSIBLE - return 1 if the current display mode is supported, 0 otherwise
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<li>GLUT_INIT_WINDOW_X - X position last set by glutInitWindowPosition
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<li>GLUT_INIT_WINDOW_Y - Y position last set by glutInitWindowPosition
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<li>GLUT_INIT_WINDOW_WIDTH - width last set by glutInitWindowSize
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<li>GLUT_INIT_WINDOW_HEIGHT - height last set by glutInitWindowSize
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<li>GLUT_INIT_DISPLAY_MODE - display mode last set by glutInitDisplayMode
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<li>GLUT_ELAPSED_TIME - time (in milliseconds) elapsed since glutInit or glutGet(GLUT_ELAPSED_TIME) was first called
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<li>GLUT_INIT_STATE - ?
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<li>GLUT_VERSION - Return value will be X*10000+Y*100+Z where X is the
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major version, Y is the minor version and Z is the patch level.
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This query is only supported in FreeGLUT (version 1.3 or later).
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</ul>
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<h2> 13.3 glutDeviceGet</h2>
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<h2> 13.4 glutGetModifiers</h2>
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@ -1809,6 +1870,54 @@ goes in the upper left-hand corner of the <i>freeglut</i><i> </i>windows </li>
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<h1> 23.0 <a name="Freeglut.h_Header"></a>
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"freeglut.h" Header File</h1>
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<p>
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FreeGLUT users should normally just include GL/glut.h in their programs.
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Programs which need FreeGLUT-specific functions should also include
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GL/freeglut_ext.h as follows:
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</p>
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<pre>
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#include <GL/glut.h>
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#ifdef FREEGLUT
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#include <GL/freeglut_ext.h>
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#endif
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</pre>
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<p>
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Compile-time FreeGLUT version testing can be done as follows:
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</p>
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<pre>
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#ifdef FREEGLUT_VERSION_1_4
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code specific to FreeGLUT 1.4 or later here
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#endif
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</pre>
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<p>
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In future releases, FREEGLUT_VERSION_1_5, FREEGLUT_VERSION_1_6, etc will
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be defined. This scheme mimics OpenGL conventions.
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</p>
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<p>
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The FreeGLUT version can be queried at runtime by calling
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glutGet(GLUT_VERSION).
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The result will be X*10000+Y*100+Z where X is the major version, Y is the
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minor version and Z is the patch level.
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</p>
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<p>
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This may be used as follows:
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</p>
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<pre>
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if (glutGet(GLUT_VERSION) < 10300) {
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printf("Sorry, you need FreeGLUT version 1.3.0 or later to run this program.\n");
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exit(1);
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}
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</pre>
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<h1> 24.0 <a name="References"></a>
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References</h1>
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