diff --git a/src/c_types.rs b/src/c_types.rs
index 1345ae5..de9c837 100644
--- a/src/c_types.rs
+++ b/src/c_types.rs
@@ -67,3 +67,26 @@ pub enum CVoid
    #[doc(hidden)]
    _Variant2
 }
+
+
+
+// String types.
+/*
+#[derive(PartialEq, PartialOrd, Eq, Ord, Hash, Clone)]
+pub struct CString
+{
+   chars: Box<[u8]>
+}
+
+#[derive(Hash)]
+pub struct CStr
+{
+   inner: [CChar]
+}
+*/
+#[cfg(feature="use_std")]
+pub type CStr = ::std::ffi::CStr;
+#[cfg(feature="use_std")]
+pub type CString = ::std::ffi::CString;
+#[cfg(feature="use_std")]
+pub type NullByteError = ::std::ffi::NulError;
diff --git a/src/lib.rs b/src/lib.rs
index 3e16e47..d44d364 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -30,4 +30,6 @@ pub use self::c_types::{CChar, CUChar};
 pub use self::c_types::{CShort, CUShort, CInt, CUInt, CLong, CULong};
 pub use self::c_types::{CLongLong, CULongLong, CFloat, CDouble};
 pub use self::c_types::{CVoid, CReturnVoid};
+#[cfg(feature = "client")]
+pub use self::c_types::{CStr, CString, NullByteError};
 pub use self::raw::{AsRaw, AsRawMut, AsRawPtr, AsRawMutPtr, FromRaw, IntoRaw};