[Dev-C++] c++ and c files in one project?

[GCS <gc...@ls...>]

Hi all,

 I began a wxWindows applications, so far so good. I have to add
database functionality, and I chose sqlite (www.sqlite.org). As
wxWindows is C++ only, and sqlite is simple C, I do not know how to
enforce it in the same project. When I used only C, I could compile
sqlite, but now I get from the C++ compiler:
72 sqlite\attach.c invalid conversion from `void*' to `Db*'
Which stands for:
aNew = sqliteMalloc( sizeof(db->aDb[0])*3 );
Where:
Db *aNew;
void *sqliteMalloc(int);
And:
struct Db {
  char *zName;         /* Name of this database */
  Btree *pBt;          /* The B*Tree structure for this database file */
  int schema_cookie;   /* Database schema version number for this file */
  Hash tblHash;        /* All tables indexed by name */
  Hash idxHash;        /* All (named) indices indexed by name */
  Hash trigHash;       /* All triggers indexed by name */
  Hash aFKey;          /* Foreign keys indexed by to-table */
  u8 inTrans;          /* 0: not writable.  1: Transaction.  2: Checkpoint */
  u16 flags;           /* Flags associated with this database */
}; 

My question is, is it correct that I have added typecasts to (Db*) as:
aNew = (Db*)sqliteMalloc( sizeof(db->aDb[0])*3 );

Thanks,
GCS