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GLXQUERYDRAWABLE(3GL)					 GLXQUERYDRAWABLE(3GL)

NAME
       glXQueryDrawable - return an attribute associated with a GLXDrawable

C SPECIFICATION
       void glXQueryDrawable ( Display *dpy,
	      GLXDrawable draw,
	      int attribute,
	      unsigned int *value)

PARAMETERS
       dpy	  Specifies the connection to the X server.

       draw	  Specifies the GLXDrawable.

       attribute  Specifies attribute value to return.

       value	  Returns the requested value.

DESCRIPTION
       glXQueryDrawable	 returns  the  attribute  of  draw. Five attribute are
       defined:

       GLX_WIDTH
	      value returns the width of draw
       GLX_HEIGHT
	      value returns height of draw
       GLX_PRESERVED_CONTENTS
	      value returns a boolean value which specifies whether  the  con‐
	      tent of draw is preserved or not when draw is lost.
       GLX_LARGEST_PBUFFER
	      value  returns  a	 boolean  value	 which	specifies wheteher the
	      largest pbuffer is to be allocated when the allocation  of  draw
	      fails.
       GLX_FBCONFIG_ID
	      value  returns the i. d. of the GLXFBConfig for draw. To get the
	      GLXFBConfig for a GLXDrawable, first retrieve the i. d. for  the
	      FBConfig and then call glXChooseFBConfig.

NOTES
       glXQueryDrawable	 is part of the GLX Version 1.3 command set. The func‐
       tion is only valid if the connection supports GLX Version 1.3 or later.

ERRORS
       GLXBadDrawable is generated if draw is not a valid GLXDrawable.

SEE ALSO
       glXChooseFBConfig, glXCreatePbuffer

				   20 May 01		 GLXQUERYDRAWABLE(3GL)

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