IupHelp
Opens the given URL in the default application.
The URL is dispatched to the system's default handler. On Linux/Unix the browser can be overridden via the IUP_HELPAPP environment variable or the global attribute HELPAPP.
It is a non-synchronous operation, i.e., the function will return just after executing the command, and it will not wait for its result.
The URL is passed to the handler as a single argument.
Parameters/Return
int IupHelp(const char* url);
url: it may be any kind of address accepted by the Browser, that is, it can include 'http://', or be just a file name, etc.
Returns: 1 if successful, -1 if failed. In Windows can return -2 if a file is not found.