Wt

Hi,

What is the correct way to build "Hello World" from listing 1 of:

A gentle introduction to the Wt C++ Toolkit for Web Applications.

This article is a tutorial distributed with Wt 3.1.1. The code is:

#include <WApplication> 
     #include <WText> 
     #include <WPushButton>

int wmain(int argc, char **argv) 
{ 
        WApplication appl(argc, argv);

// Widgets can be added to a parent
        // by calling addWidget() ...
        appl.root()->addWidget(new Wtext("<h1>Hello, World!</h1>"));

// ... or by specifying a parent at
        // construction time
        WPushButton *Button = new WPushButton("Quit", appl.root());
        Button->clicked.connect(SLOT(&appl, Wapplication::quit));

return appl.exec();
     }

I am confused by the lack of a definition for main() in the code.

A different but related question follows.
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A different version of "Hello" is distributed in the examples of Wt 3.1.1.
It is hello.C. I won't include the listing, but it does include a
definition for main() (and no definition for wmain()).

I have successfully compiled this version with the command:

gcc -o hello.wthttp hello.C -I/usr/local/include -I/usr/local/include/Wt -L/usr/local/lib -lwt -lwthttp

It successfully runs on the wt-server with the command:

./hello.wthttp --docroot . --http-address 192.168.0.100  --http-port 8080

However, my compilation fails when I change -lwthttp to -lfcgi and try to compile with

gcc -o hello.fcgi hello.C -I/usr/local/include -I/usr/local/include/Wt -L/usr/local/lib -lwt -lfcgi

This is an attempt to make a FastCGI executable.
But compilation fails because Wt::WRun() is not defined in -lfgci (in otherwords libfgci.so).
This makes some sense since WRun() launches the wt-server, while FastCGI wouldn't need such a launch.

What is the correct way to compile this code for FastCGI?

Thanks.