Are you sure your .qrc file is in the good directory ?

It should be like this :

qrc_sample.qrc
qrc_sample.cpp <generated by compiler>
images/
|_ fully.bmp

By the way, in your code..to load the pixmap from resource, you have to do like this :
pixmap.load(":/images/fully.bmp");

Don't forget the ':/' before the path !

Guilugi.