#ifndef __LOGWIN_H#define __LOGWIN_H#ifdef __cplusplusextern "C" {#endif  /* __cplusplus */typedef BOOL (*ONCLOSE) (HWND hWnd);HWND CreateLogWin (BOOL fVisible, ONCLOSE OnClose,                 int nr_rows, int nr_cols, int max_lines);void DestroyLogWin (HWND log_win);void LogMessage (HWND log_win, const char* format, ...);void DumpAllLogMessages (HWND log_win, FILE* fp);int IsLogWinVisible (HWND log_win);void ToggleLogWin (HWND log_win);#ifdef __cplusplus}#endif  /* __cplusplus */#endif /* __LOGWIN_H */