version 1.5 compling error

[AnthonyYao1]

When I run gcc -o test test.c minIni.c at minIni-1.5/dev, it says as follow.

In file included from test.c:8:
minIni.h:54:24: error: unknown type name ‘TCHAR’
   54 | int  ini_putbool(const TCHAR *Section, const TCHAR *Key, int Value, const TCHAR *Filename);
      |                        ^~~~~
minIni.h:54:46: error: unknown type name ‘TCHAR’
   54 | int  ini_putbool(const TCHAR *Section, const TCHAR *Key, int Value, const TCHAR *Filename);
      |                                              ^~~~~
minIni.h:54:75: error: unknown type name ‘TCHAR’
   54 | int  ini_putbool(const TCHAR *Section, const TCHAR *Key, int Value, const TCHAR *Filename);
      |                                                                           ^~~~~
In file included from minIni.c:33:
minIni.h:54:24: error: unknown type name ‘TCHAR’
   54 | int  ini_putbool(const TCHAR *Section, const TCHAR *Key, int Value, const TCHAR *Filename);
      |                        ^~~~~
minIni.h:54:46: error: unknown type name ‘TCHAR’
   54 | int  ini_putbool(const TCHAR *Section, const TCHAR *Key, int Value, const TCHAR *Filename);
      |                                              ^~~~~
minIni.h:54:75: error: unknown type name ‘TCHAR’
   54 | int  ini_putbool(const TCHAR *Section, const TCHAR *Key, int Value, const TCHAR *Filename);
      |                                                                           ^~~~~
minIni.c:961:5: error: conflicting types for ‘ini_putbool’; have ‘int(const char *, const char *, int,  const char *)’
  961 | int ini_putbool(const TCHAR *Section, const TCHAR *Key, int Value, const TCHAR *Filename)
      |     ^~~~~~~~~~~
minIni.h:54:6: note: previous declaration of ‘ini_putbool’ with type ‘int(const int *, const int *, int,  const int *)’
   54 | int  ini_putbool(const TCHAR *Section, const TCHAR *Key, int Value, const TCHAR *Filename);
      |      ^~~~~~~~~~~

I noticed that I changed line 54 of the minIni.h file and the compling is OK. Is this a code error?

- int  ini_putbool(const TCHAR *Section, const TCHAR *Key, int Value, const TCHAR *Filename);
+ int  ini_putbool(const mTCHAR *Section, const mTCHAR *Key, int Value, const mTCHAR *Filename);