[Lazarus] creating a Lazarus package "NoGUIApplication"

[Michael Van Canneyt]

On Wed, 17 Mar 2010, Michael Schnell wrote:

> On 03/15/2010 08:54 PM, Joost van der Sluis wrote:
>>
>> Fcl-web is a framework on which you can make 'anything' you want. You
>> can use FCGI and your program will be persistent. You can use the
>> webmodules. If you do, you can let the framework create a new webmodule
>> for every call. (REST) But you can also make them persistent. You can
>> even bind them to one session. So you have one Webmodule persistent in
>> memory for every session.
>>
>
> I don't understand how this can work.
> If you install you CGI on a hired web server, same will not provide a
> GUI APi, so you can't do this program as a normal "Application" e.g.
> with GTK binding.
> If you therefor use the "nogui" Widget Type, the program can't handle
> events and thus will stop as soon as the user code is done. Thus it is
> not "persistent".

Why not ? 
It just has to persist all variables it needs in the next request.
The session takes care of that.

>
>
>> It doesn't have a queue, though. Because the web-server handles that.
>> (Each http-request is an event)
> How are such events communicated from the web server to the CGI program
> ?  What mechanism "fires" these events within the GCI code ? How is the
> program supposed to wait for such an event ?

It just waits for a request on the socket.

Michael.