diff --git a/c/c.go b/c/c.go
index 9cb38db..ce4cf09 100644
--- a/c/c.go
+++ b/c/c.go
@@ -21,12 +21,19 @@ import (
 )
 
 type (
-	Void    = [0]byte
+	Void = [0]byte
+
 	Char    = int8
-	Float   = float32
-	Double  = float64
+	Char8T  = uint8
+	Char16T = uint16
+	Char32T = uint32
+
+	Float  = float32
+	Double = float64
+
 	Pointer = unsafe.Pointer
 	VaList  = Pointer
+
 	FilePtr = *FILE
 
 	Int  = int32
diff --git a/c/ctypes_32bit.go b/c/ctypes_32bit.go
index 7d64ca5..d9ba12f 100644
--- a/c/ctypes_32bit.go
+++ b/c/ctypes_32bit.go
@@ -25,3 +25,7 @@ type (
 	Long  = int32
 	Ulong = uint32
 )
+
+type (
+	WcharT = int32
+)
diff --git a/c/ctypes_windows.go b/c/ctypes_windows.go
index 1ca0749..f4897db 100644
--- a/c/ctypes_windows.go
+++ b/c/ctypes_windows.go
@@ -24,3 +24,7 @@ type (
 	Long  = int32
 	Ulong = uint32
 )
+
+type (
+	WcharT = uint16
+)
diff --git a/c/llcppg.pub b/c/llcppg.pub
index 66f8ef8..0c53833 100644
--- a/c/llcppg.pub
+++ b/c/llcppg.pub
@@ -1,6 +1,10 @@
 D github.com/goplus/lib/c/os
 D github.com/goplus/lib/c/time
 T FILE FILE
+T wchar_t WcharT
+T char8_t Char8T
+T char16_t Char16T
+T char32_t Char32T
 T size_t SizeT
 T ssize_t SsizeT
 T ptrdiff_t PtrdiffT