Table of Contents
XQueryPointer - get pointer
coordinates
- 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);
- 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 window.
The XQueryPointer function returns the root window the pointer
is logically on and the pointer coordinates relative to the root window's
origin. 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 XQueryPointer
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 bitwise 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.
- BadWindow
- A value for a Window argument does not name a defined
Window.
XGetWindowAttributes(3X11)
, XQueryTree(3X11)
Xlib - C Language X Interface
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