i want view the code of nxz generator

i put(drag and drop) the map file on nxz generator program,
then it was create nxz file at folder of map file...
how to use 'drag and drop' event?
and nxz generator base on C languge?
i wonder that...
then it was create nxz file at folder of map file...
how to use 'drag and drop' event?
and nxz generator base on C languge?
i wonder that...