Re: [MiNT] AES related question: How to keep track if my application is receiving input?

["Helmut Karlowski" <helmut.karlowski@ish.de>]

Am 23.08.2010, 11:36 Uhr, schrieb m0n0 <ole@monochrom.net>:

> I need to keep track of the mouse position and key up / down press.

For mouse you can use a timer-event and check the mouse in between (means  
polling). It works good. I don't know what you mean by key up/down: Do you  
need to know if a key is released or what?

> I would do this by using other TOS functions / interrupts, and then  
> store the data into an event pipe.
> There is one problem - how do I know if I must ignore input, because the  
> window has lost input focus or is inactive?

When you do it clean (maybe using signal-handlers) this should be  
possible. I remember having read something of integrating Fselect into  
evnt_multi or similar, but cannot remember exactly. I think it was from  
Henk (or in xaaes-source).

> Will it be enough to watch for WM_BOTTOMED / WM_BACKDROPPED / WM_ICONIFY  
> / WM_SHADED message, and if they occur, ignore further VDI mouse
> / key input until WM_TOPPED, WM_UNSHADED etc. arrives? I expect this  
> won't be OK, because the application could be yielded.

WM_UNTOPPED is missing at least. But I guess this can get a bit confusing  
anyway.

> As far as I understand evnt_keybd / evnt_multi just informs me about key  
> down.

How do you get this information?

> What I don't like about it: it costs to much CPU time, so I want to use  
> another way.

It does not use much CPU to poll - I have done this for mouse using  
evnt_multi-timeout and the usage is nearly 0.

> experience, or is there some xaees special function that could help me?
> (something like xaaes_get_input_receiver_pid() ;) )

Not that I would know of.

> Anyone has information how to do it properly?

Use MU_TIMER, and request the things when you are top. Bad example of  
course is aniplayer who always uses 99% CPU ..

--
Helmut Karlowski