These are the files I found in Qt Source code....

qeffects.cpp and qeffects_p.h are found in the "gui" folder of the "src"

I want to use these files in my application ....
As far as the information i have on these files is that these file are used to create some fading effect in our application...but I'm not able to understand how to used them in my application...

Thanks
Naveen.....