XtAddCallback man page on QNX

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XtAddCallback(3)		 XT FUNCTIONS		      XtAddCallback(3)

       XtAddCallback, XtAddCallbacks, XtRemoveCallback, XtRemoveCallbacks,
       XtRemoveAllCallbacks - add and remove callback procedures

       void XtAddCallback(Widget w, String callback_name, XtCallbackProc call‐
	      back, XtPointer client_data);

       void XtAddCallbacks(Widget w, String callback_name, XtCallbackList

       void XtRemoveCallback(Widget w, String callback_name, XtCallbackProc
	      callback, XtPointer client_data);

       void XtRemoveCallbacks(Widget w, String callback_name, XtCallbackList

       void XtRemoveAllCallbacks(Widget w, String callback_name,

       callback	 Specifies the callback procedure.

       callbacks Specifies the null-terminated list of callback procedures and
		 corresponding client data.

		 Specifies the callback list to which the procedure is to be
		 appended or deleted.

		 Specifies the argument that is to be passed to the specified
		 procedure when it is invoked by XtCallbacks or NULL, or the
		 client data to match on the registered callback procedures.

       w	 Specifies the widget.

       The XtAddCallback function adds the specified callback procedure to the
       specified widget's callback list.

       The XtAddCallbacks add the specified list of callbacks to the specified
       widget's callback list.

       The XtRemoveCallback function removes a callback only if both the pro‐
       cedure and the client data match.

       The XtRemoveCallbacks function removes the specified callback proce‐
       dures from the specified widget's callback list.

       The XtRemoveAllCallbacks function removes all the callback procedures
       from the specified widget's callback list.

       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface

X Version 11			  libXt 1.0.8		      XtAddCallback(3)
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                         \ \| |/ / \ \| |/ / \ \| |/ /  
                          \ \ / /   \ \ / /   \ \ / /   
                           \   /     \   /     \   /    
                            \_/       \_/       \_/ 
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