XGrabButton man page on Ultrix

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XGrabButton(3X11)		     X11R5		     XGrabButton(3X11)

NAME
       XGrabButton, XUngrabButton - grab pointer buttons

SYNTAX
       XGrabButton(display, button, modifiers, grab_window, owner_events,
       event_mask,
		       pointer_mode, keyboard_mode, confine_to, cursor)
	     Display *display;
	     unsigned int button;
	     unsigned int modifiers;
	     Window grab_window;
	     Bool owner_events;
	     unsigned int event_mask;
	     int pointer_mode, keyboard_mode;
	     Window confine_to;
	     Cursor cursor;

       XUngrabButton(display, button, modifiers, grab_window)
	     Display *display;
	     unsigned int button;
	     unsigned int modifiers;
	     Window grab_window;

ARGUMENTS
       button	 Specifies the pointer button that is to be grabbed or
		 released or

       confine_to
		 Specifies the window to confine the pointer in or

       cursor	 Specifies the cursor that is to be displayed or

       display	 Specifies the connection to the X server.

       event_mask
		 Specifies which pointer events are reported to the client.
		 The mask is the bitwise inclusive OR of the valid pointer
		 event mask bits.

       grab_window
		 Specifies the grab window.

       keyboard_mode
		 Specifies further processing of keyboard events.  You can
		 pass or

       modifiers Specifies the set of keymasks or The mask is the bitwise
		 inclusive OR of the valid keymask bits.

       owner_events
		 Specifies a Boolean value that indicates whether the pointer
		 events are to be reported as usual or reported with respect
		 to the grab window if selected by the event mask.

       pointer_mode
		 Specifies further processing of pointer events.  You can pass
		 or

DESCRIPTION
       The function establishes a passive grab.	 In the future, the pointer is
       actively grabbed (as for the last-pointer-grab time is set to the time
       at which the button was pressed (as transmitted in the event), and the
       event is reported if all of the following conditions are true:

       ·    The pointer is not grabbed, and the specified button is logically
	    pressed when the specified modifier keys are logically down, and
	    no other buttons or modifier keys are logically down.

       ·    The grab_window contains the pointer.

       ·    The confine_to window (if any) is viewable.

       ·    A passive grab on the same button/key combination does not exist
	    on any ancestor of grab_window.

       The interpretation of the remaining arguments is as for The active grab
       is terminated automatically when the logical state of the pointer has
       all buttons released (independent of the state of the logical modifier
       keys).

       Note that the logical state of a device (as seen by client applica‐
       tions) may lag the physical state if device event processing is frozen.

       This request overrides all previous grabs by the same client on the
       same button/key combinations on the same window.	 A modifiers of is
       equivalent to issuing the grab request for all possible modifier combi‐
       nations (including the combination of no modifiers).  It is not
       required that all modifiers specified have currently assigned KeyCodes.
       A button of is equivalent to issuing the request for all possible but‐
       tons.  Otherwise, it is not required that the specified button cur‐
       rently be assigned to a physical button.

       If some other client has already issued a with the same button/key com‐
       bination on the same window, a error results.  When using or the
       request fails completely, and a error results (no grabs are estab‐
       lished) if there is a conflicting grab for any combination.  has no
       effect on an active grab.

       can generate and errors.

       The function releases the passive button/key combination on the speci‐
       fied window if it was grabbed by this client.  A modifiers of is equiv‐
       alent to issuing the ungrab request for all possible modifier combina‐
       tions, including the combination of no modifiers.  A button of is
       equivalent to issuing the request for all possible buttons.  has no
       effect on an active grab.

       can generate and errors.

DIAGNOSTICS
       A value for a Cursor argument does not name a defined Cursor.

       Some numeric value falls outside the range of values accepted by the
       request.
		 Unless a specific range is specified for an argument, the
		 full range defined by the argument's type is accepted.	 Any
		 argument defined as a set of alternatives can generate this
		 error.

       A value for a Window argument does not name a defined Window.

SEE ALSO
       XAllowEvents(3X11), XGrabPointer(3X11), XGrabKey(3X11), XGrabKey‐
       board(3X11),
       Xlib - C Language X Interface

							     XGrabButton(3X11)
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