XQueryTree(3) XLIB FUNCTIONS XQueryTree(3)NAME
XQueryTree - query window tree information
SYNTAX
Status XQueryTree(Display *display, Window w, Window *root_return, Window *parent_return, Window **children_return, unsigned int *nchil-
dren_return);
ARGUMENTS
children_return
Returns the list of children.
display Specifies the connection to the X server.
nchildren_return
Returns the number of children.
parent_return
Returns the parent window.
root_return
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 1.5.0 XQueryTree(3)
Check Out this Related Man Page
XQueryTree(3) XLIB FUNCTIONS XQueryTree(3)NAME
XQueryTree - query window tree information
SYNTAX
Status XQueryTree(Display *display, Window w, Window *root_return, Window *parent_return, Window **children_return, unsigned int *nchil-
dren_return);
ARGUMENTS
children_return
Returns the list of children.
display Specifies the connection to the X server.
nchildren_return
Returns the number of children.
parent_return
Returns the parent window.
root_return
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 1.5.0 XQueryTree(3)
I needed to get the list of files accessed by a process nad its children. I tried using tusc and I got a complete list of read system calls. But how to get the file mane form that output.
This is the command I used:
tusc -kfs read <pid>
and this is the sample of the output I got:
read(3,... (2 Replies)
Hello,
I just try to get the control of a Window by searching his name. I curretly do that :
Window CMD::window_from_name_search(Display *display, Window current, char const *needle)
{
Window retval, root, parent, *children;
unsigned children_count;
char *name = NULL;
... (0 Replies)