|This page contains an entry from the official DM Reference.|
The __MAIN__ macro is defined in the main
.dme file being
compiled. In all other files included by this file, __MAIN__ is not defined.
The purpose of this is for library writers to package a small demo of their
library directly in the library source code. When users compile the library
directly, the library's own
.dme is the main file and can include
extra files that are not normally part of the library.
#ifdef __MAIN__ #include "demo.dm" #include "demo.dmm" #endif
If the demo requires a lot of extra resources, it is probably better to
package the demo as a separate project. Small demos, however, are nice and
convenient using this "auto-demo" technique--especially since Dream Seeker
automatically launches Dream Maker after installing a library containing a