www.pudn.com > truecrypt-4.2-source-code.zip > Registry.h

int ReadRegistryInt (char *subKey, char *name, int defaultValue); 
char *ReadRegistryString (char *subKey, char *name, char *defaultValue, char *str, int maxLen); 
DWORD ReadRegistryBytes (char *path, char *name, char *value, int maxLen); 
void WriteRegistryInt (char *subKey, char *name, int value); 
void WriteRegistryString (char *subKey, char *name, char *str); 
BOOL WriteRegistryBytes (char *path, char *name, char *str, DWORD size); 
void DeleteRegistryValue (char *subKey, char *name);