XQueryPointer(3) XLIB FUNCTIONS XQueryPointer(3)
NAME
XQueryPointer - get pointer coordinates
SYNTAX
Bool XQueryPointer(Display *display, Window w, Window *root_return,
Window *child_return, int *root_x_return, int *root_y_return,
int *win_x_return, int *win_y_return, unsigned int
*mask_return);
ARGUMENTS
child_return
Returns the child window that the pointer is located in, if
any.
display Specifies the connection to the X server.
mask_return
Returns the current state of the modifier keys and pointer
buttons.
root_return
Returns the root window that the pointer is in.
root_x_return
root_y_return
Return the pointer coordinates relative to the root window's
origin.
w Specifies the window.
win_x_return
win_y_return
Return the pointer coordinates relative to the specified win-
dow.
DESCRIPTION
The XQueryPointer function returns the root window the pointer is logi-
cally on and the pointer coordinates relative to the root window's ori-
gin. If XQueryPointer returns False, the pointer is not on the same
screen as the specified window, and XQueryPointer returns None to
child_return and zero to win_x_return and win_y_return. If XQuery-
Pointer returns True, the pointer coordinates returned to win_x_return
and win_y_return are relative to the origin of the specified window.
In this case, XQueryPointer returns the child that contains the
pointer, if any, or else None to child_return.
XQueryPointer returns the current logical state of the keyboard buttons
and the modifier keys in mask_return. It sets mask_return to the bit-
wise inclusive OR of one or more of the button or modifier key bitmasks
to match the current state of the mouse buttons and the modifier keys.
XQueryPointer can generate a BadWindow error.
DIAGNOSTICS
BadWindow A value for a Window argument does not name a defined Window.
SEE ALSO
XGetWindowAttributes(3), XQueryTree(3)
Xlib - C Language X Interface
X Version 11 libX11 1.6.9 XQueryPointer(3)
xorg-libX11 1.6.9 - Generated Thu Oct 24 18:26:40 CDT 2019