xquerypointer(3x11) [ultrix man page]
XQueryPointer(3X11) MIT X11R4 XQueryPointer(3X11) Name XQueryPointer - get pointer coordinates Syntax Bool XQueryPointer(display, w, root_return, child_return, root_x_return, root_y_return, win_x_return, win_y_return, mask_return) Display *display; Window w; Window *root_return, *child_return; int *root_x_return, *root_y_return; int *win_x_return, *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 window. Description The function returns the root window the pointer is logically on and the pointer coordinates relative to the root window's origin. If returns the pointer is not on the same screen as the specified window, and returns to child_return and zero to win_x_return and win_y_return. If returns the pointer coordinates returned to win_x_return and win_y_return are relative to the origin of the specified window. In this case, returns the child that contains the pointer, if any, or else to child_return. returns the current logical state of the keyboard buttons and the modifier keys in mask_return. It sets mask_return to the bitwise inclu- sive 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. can generate a error. Diagnostics A value for a Window argument does not name a defined Window. See Also XGetWindowAttributes(3X11), XQueryTree(3X11) X Window System: The Complete Reference, Second Edition, Robert W. Scheifler and James Gettys XQueryPointer(3X11)
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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 window. DESCRIPTION
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. 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 1.5.0 XQueryPointer(3)