Bernie wrote: > All my windows have the standard handler attribute and the mouse > wheel works great for scrolling controls such as data browsers. > What I really hate is that when the cursor is over a browser in an > inactive window, the browser still scrolls. > How can we block the mouse event for inactive windows? > Installing _kEventMouseWheelMoved on the application or the windows > and returning _noErr doesn't help as it appears that this event is > called *after* the event... so to speak. > My guess is that your handler is not being called at all. Try installing it on the control. Robert P.