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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);
Returns
the child window that the pointer is located in, if any.
Specifies the connection
to the X server.
Returns the current state of the modifier keys and pointer
buttons.
Returns the root window that the pointer is in.
Return the pointer coordinates relative to the root window's origin.
Specifies
the window.
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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