| XdbeGetVisualInfo(3) | Library Functions Manual | XdbeGetVisualInfo(3) | 
XdbeScreenVisualInfo *XdbeGetVisualInfo(
    Display  *dpy,
    Drawable *screen_specifiers,
    int      *num_screens)
     int            count
     XdbeVisualInfo *visinfo
count specifies the number of items in visinfo. visinfo specifies a list of visuals, depths, and performance hints for this screen.
The XdbeVisualInfo structure has the following fields:
     VisualID visual
     int      depth
     int      perflevel
visual specifies one visual ID that supports double-buffering. depth specifies the depth of the visual. perflevel is a performance hint.
The only operation defined on a perflevel is comparison to a perflevel of another visual on the same screen. The visual having the higher perflevel is likely to have better double-buffering graphics performance than the visual having the lower perflevel. Nothing can be deduced from the following: the magnitude of the difference of two perflevels, a perflevel value in isolation, or comparing perflevels from different servers.
| X Version 11 | X FUNCTIONS |