Input handling in a GL window

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#681

From: Tom Zhou
Date: Wed, 30 Sep 1992 22:09

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Hi, there,

My GL window doesn't seem to take device input!
I'm using a variation of GLContext. I used an InputHandler to wrap the
GLContext instance (or to be wrapped by the GLContext -- I tried both
ways). But this InputHandler doesn't receive anything but key stroke
events. (I figure key strokes reach the GL input handler through some 
weird focusing mechanism that I don't understand yet). A trace reveals 
that GLWindow::receive(Event&) never gets called. My guess is the
following:

1. GL intercepts events in the GL window, so the call XNextEvent in
Display::get(Event&) gets no X event from the GL window. Or

2. InterViews' input mechanism doesn't recognize the GL window, so the
call WindowRep::find(...) in Display::get(Event&)
doesn't return a valid window when an event happens in the GL window.

Both conditions can result in receive(Event&) not being called.

Can anybody shed a light? How can I get out of this?

-Tom
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From: zhou@m.cs.uiuc.edu (Tom Zhou)
Newsgroups: comp.windows.interviews
Subject: Input handling in a GL window
Message-ID: <1992Sep30.220957.31057@m.cs.uiuc.edu>
Date: 30 Sep 92 22:09:57 GMT
Article-I.D.: m.1992Sep30.220957.31057
Organization: University of Illinois, Dept. of Comp. Sci., Urbana, IL
Lines: 27