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Re: How to write a daemon/background app?
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Re: How to write a daemon/background app?


  • Subject: Re: How to write a daemon/background app?
  • From: James Chen <email@hidden>
  • Date: Tue, 16 Dec 2003 19:40:59 +0800

Thanks, Stephane
That resolves my problem.

In that case, you can write a Background Cocoa app which when it's launched for the first time (or when it's installed) decalres itself to be a Login Item (I think there's some code available somewhere explaining how to do this).
I have no clue to find such stuff.
Could you point me to the place you mentioned?
Very appreciate,
Jam
On Dec 16, 2003, at 7:28 PM, Stephane Sudre wrote:

In that case, you can write a Background Cocoa app which when it's launched for the first time (or when it's installed) decalres itself to be a Login Item (I think there's some code available somewhere explaining how to do this).

Then you also need to state that the application is a background app by adding the following key in the Info.plist

NSUIElement "string" 1

In PB, you add it in the Target Info.plist entries expert view.

In XCode, I don't know as I'm not using it.

On Tuesday, December 16, 2003, at 12:06 PM, James Chen wrote:

I think it runs only when the user logged in?
Actually, I'd like to write a program which will inform me it's time to take a break. So that I won't work too hard to forget to relax.
(something like "screen saver", I'd like to call it "Energy" Saver maybe)

Jam

On Dec 16, 2003, at 6:42 PM, Stephane Sudre wrote:

Does this background app need to run forever or just when a user is login?

On Tuesday, December 16, 2003, at 11:30 AM, James Chen wrote:

Hi,
I'd like to write a simple alarm app which runs in the background.
And then prompts a Alert Dialog when the time is out.
The issue is, I usually wrote a "normal" application, I don't know how to write a daemon.
So I start with the Cocoa Application Project Template from XCode. (I will use Cocoa in this daemon)
And try some codes from Apple like this:
int main()
{
daemon(0,0);
while(1) {
syslog(1, "test");
sleep(5);
}
}
Yes, the program works but I can see my application's icon appears on Dock and vanish.
Although it happens in less a second, that isn't what I want it to be.

Could someone teach/help me to figure it out or point me some useful references?
Appreciate for any comment and help,
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 >Re: How to write a daemon/background app? (From: Stephane Sudre <email@hidden>)

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