glXQueryDrawable — returns an attribute assoicated with a GLX drawable
int glXQueryDrawable( | Display * | dpy, |
GLXDrawable | draw, | |
int | attribute, | |
unsigned int * | value) ; |
dpy
Specifies the connection to the X server.
draw
Specifies the GLX drawable to be queried.
attribute
Specifies the attribute to be returned. Must be one of
GLX_WIDTH
,
GLX_HEIGHT
,
GLX_PRESERVED_CONTENTS
,
GLX_LARGEST_PBUFFER
, or
GLX_FBCONFIG_ID
.
value
Contains the return value for
attribute
.
glXQueryDrawable
sets
value
to the value of
attribute
with respect to the GLXDrawable
draw
.
attribute
may be one of the following:
GLX_WIDTH
Returns the width of ctx
.
GLX_HEIGHT
Returns the height of ctx
.
GLX_PRESERVED_CONTENTS
Returns True
if the contents
of a GLXPbuffer are preserved when a resource
conflict occurs; False
otherwise.
GLX_LARGEST_PBUFFER
Returns the value set when
glXCreatePbuffer
was called to
create the GLXPbuffer. If
False
is returned, then the
call to glXCreatePbuffer
will
fail to create a GLXPbuffer if the requested size
is larger than the implementation maximum or
available resources. If True
is returned, a GLXPbuffer of the maximum availble
size (if less than the requested width and height)
is created.
GLX_FBCONFIG_ID
Returns the XID for draw
.
If draw
is a GLXWindow or GLXPixmap and
attribute
is set to
GLX_PRESERVED_CONTENTS
or
GLX_LARGETST_PBUFFER
, the contents of
value
are undefined. If
attribute
is not one of the attributes
listed above, the contents of value
are
unedfined.
glXCreateWindow, glXCreatePixmap, glXCreatePbuffer, glXGetFBConfigAttrib, glXChooseFBConfig
Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.