Manual Pages for Linux CentOS command on man XQueryTree
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Manual Pages for Linux CentOS command on man XQueryTree

XQueryTree(3) XLIB FUNCTIONS XQueryTree(3)

NAME

XQueryTree - query window tree information SYNTAX Status XQueryTree(Display *display, Window w, Window *rootreturn, Win‐ dow *parentreturn, Window **childrenreturn, unsigned int *nchildrenreturn); ARGUMENTS childrenreturn Returns the list of children. display Specifies the connection to the X server. nchildrenreturn Returns the number of children. parentreturn Returns the parent window. rootreturn Returns the root window. w Specifies the window whose list of children, root, parent, and number of children you want to obtain. DESCRIPTION The XQueryTree function returns the root ID, the parent window ID, a pointer to the list of children windows (NULL when there are no chil‐ dren), and the number of children in the list for the specified window.

The children are listed in current stacking order, from bottom-most

(first) to top-most (last). XQueryTree returns zero if it fails and

nonzero if it succeeds. To free a non-NULL children list when it is no longer needed, use XFree. XQueryTree can generate a BadWindow error. BUGS This really should return a screen *, not a root window ID. DIAGNOSTICS BadWindow A value for a Window argument does not name a defined Window. SEE ALSO XFree(3), XGetWindowAttributes(3), XQueryPointer(3)

Xlib - C Language X Interface X Version 11 libX11 1.6.5 XQueryTree(3)




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