Removes callback from the list of functions called when the value of a dialog item within window changes value, or when another window-level event occurs. If window is invalid, or callback is not on the callback list for the window, $ERROR is set and 0 is returned. If successful, the function returns the unique window identifier.

The window parameter is a window identifier. The cbtype parameter needs to be a valid callback type (valid callbacks are listed under the window_add_callback function). The callback parameter specifies the actual callback to remove.

Example