Qt Creator not recognising headers

[bibek]

Whenever I try including some uncommon headers, Qt Creator is failing to link them. It says those files don't exist. I searched the installation folder & found that all files are perfectly in there.

I compiled and created the sis file from the project once. It was working fine. But next day when I opened, it's giving me this error and not compiling. I'm basically stuck with the project.
Anyone has any idea what to do? Reinstalling n purging has no effect

!http://dl.dropbox.com/u/30937627/Share/Screenshots/Capture.JPG(error screenshot)!

[sierdzio]

Add the folder containing those headers to qmake project:
@
INCLUDEPATH += path/to/those/headers
@

Or even to HEADERS and SOURCES respectfully.

[bibek]

Thanks sierdzio, One more question:

I've those headers in this following address with respect to sdk install folder.
What should be the path address? Relative to project? Or relative to sdk?

I:\QtSDK\Symbian\SDKs\Symbian3Qt474\epoc32\include...\xxx.h

[bibek]

It tried doing it. Headers were recognised, but I'm getting around 2000 critical errors!! How weird!
What's wrong!!

[sierdzio]

:)

Obviously, I don't know what is wrong, you have not given us much clue ;)