Help me with this

[asdfg]

Hello,

I am not very good at C. Below is a code snippet I found on the net. I couldnt understand the line "pDosHeader = (PIMAGE_DOS_HEADER) lpFileBase;"
What kind of a usage is it?
Could anyone explain that line?
Thanks.

void SomeFunction(SomeParameters)
;local variables
-------------------
PIMAGE_DOS_HEADER pDosHeader;
LPVOID lpFileBase;

.....
.....

lpFileBase = MapViewOfFile (hFileMapping, FILE_MAP_READ, 0, 0, 0);

pDosHeader = (PIMAGE_DOS_HEADER) lpFileBase;

if (pDosHeader->e_magic != IMAGE_DOS_SIGNATURE)
   {
       fprintf (stderr, "DOS header missing\n");
       UnmapViewOfFile (lpFileBase);
   }
....
....

}

[matsp]

It is a cast to convert a pointer of type LPVOID (lpFileBase) to PIMAGE_DOS_HEADER.

--
Mats