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MING-W compiler:

#include <tchar.h>
...
...
#define _UNICODE
_T("World"); // L"World" -> wchar_t
#undef _UNICODE
_T("World"); // "World" -> char

no entender

I'm reviewing your code I also am developing a project with the same resource, by the time I leave these examples:

FoosYerDoos - C++ Programming
FoosYerDoos - C++ Programming

Regards

Configurar la consola de cmd o ventana de msdos

Project Progress Bar in Codeblocks - XP Visual Style:
Win API - Capítulo 50 Barra de progreso

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For compatibility ANSI - UNICODE:

#include <tchar.h>
...
hInstance = GetModuleHandle(_T("TS104.dll"));

Used in CodeBlocks:

#if defined __MINGW_H
#define _WIN32_IE 0x400
#endif
#include <commctrl.h>

Linked libcomctl32.a