[Bug 2835] add symbol exports for XReadDisplay extension

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https://bugs.freedesktop.org/show_bug.cgi?id=2835          
     




------- Additional Comments From ajax at nwnk.net  2005-03-30 11:00 -------
yes, XReadDisplay() is a superset of XReadScreen():

extern XImage *XReadDisplay (
#if NeedFunctionPrototypes
        Display *       /* dpy */,
        Window          /* src */,
        int             /* x */,
        int             /* y */,
        unsigned int    /* w */,
        unsigned int    /* h */,
        unsigned long   /* hints */,
        unsigned long * /* hints_return */
#endif
);

where hints, in addition to whether to include the cursor, also allows for alpha
channel readback and selection of arbitrary sets of individual overlay/underlay
planes.          
     
     
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