I have inspected wine source code and found the following information: environ.c implements the function as follows:
HANDLE <http://www.winehq.com/source/memory/ident?i=HANDLE> WINAPI <http://www.winehq.com/source/memory/ident?i=WINAPI> GetStdHandle <http://www.winehq.com/source/memory/ident?i=GetStdHandle>( DWORD <http://www.winehq.com/source/memory/ident?i=DWORD> std_handle ) 609 <http://www.winehq.com/source/memory/source/memory/environ.c#L609> { 610 <http://www.winehq.com/source/memory/source/memory/environ.c#L610> switch(std_handle) 611 <http://www.winehq.com/source/memory/source/memory/environ.c#L611> { 612 <http://www.winehq.com/source/memory/source/memory/environ.c#L612> case STD_INPUT_HANDLE <http://www.winehq.com/source/memory/ident?i=STD_INPUT_HANDLE>: return current_envdb <http://www.winehq.com/source/memory/ident?i=current_envdb>.hStdin; 613 <http://www.winehq.com/source/memory/source/memory/environ.c#L613> case STD_OUTPUT_HANDLE <http://www.winehq.com/source/memory/ident?i=STD_OUTPUT_HANDLE>: return current_envdb <http://www.winehq.com/source/memory/ident?i=current_envdb>.hStdout; 614 <http://www.winehq.com/source/memory/source/memory/environ.c#L614> case STD_ERROR_HANDLE <http://www.winehq.com/source/memory/ident?i=STD_ERROR_HANDLE>: return current_envdb <http://www.winehq.com/source/memory/ident?i=current_envdb>.hStderr; 615 <http://www.winehq.com/source/memory/source/memory/environ.c#L615> } 616 <http://www.winehq.com/source/memory/source/memory/environ.c#L616> SetLastError( ERROR_INVALID_PARAMETER <http://www.winehq.com/source/memory/ident?i=ERROR_INVALID_PARAMETER> ); 617 <http://www.winehq.com/source/memory/source/memory/environ.c#L617> return INVALID_HANDLE_VALUE <http://www.winehq.com/source/memory/ident?i=INVALID_HANDLE_VALUE>; 618 <http://www.winehq.com/source/memory/source/memory/environ.c#L618> } 619 <http://www.winehq.com/source/memory/source/memory/environ.c#L619> So the function returns current_envdb.hStdin. or current_envdb.hStdout. Inspecting current_envdb structure also in environ.c: 92 <http://www.winehq.com/source/memory/source/memory/environ.c#L92> ENVDB <http://www.winehq.com/source/memory/ident?i=ENVDB> current_envdb <http://www.winehq.com/source/memory/ident?i=current_envdb> = 93 <http://www.winehq.com/source/memory/source/memory/environ.c#L93> { 94 <http://www.winehq.com/source/memory/source/memory/environ.c#L94> 0, /* environ */ 95 <http://www.winehq.com/source/memory/source/memory/environ.c#L95> 0, /* unknown1 */ 96 <http://www.winehq.com/source/memory/source/memory/environ.c#L96> 0, /* cmd_line */ 97 <http://www.winehq.com/source/memory/source/memory/environ.c#L97> 0, /* cur_dir */ 98 <http://www.winehq.com/source/memory/source/memory/environ.c#L98> ¤t_startupinfo <http://www.winehq.com/source/memory/ident?i=current_startupinfo>, /* startup_info */ 99 <http://www.winehq.com/source/memory/source/memory/environ.c#L99> 0, /* hStdin */ 100 <http://www.winehq.com/source/memory/source/memory/environ.c#L100> 0, /* hStdout */ 101 <http://www.winehq.com/source/memory/source/memory/environ.c#L101> 0, /* hStderr */ 102 <http://www.winehq.com/source/memory/source/memory/environ.c#L102> 0, /* unknown2 */ 103 <http://www.winehq.com/source/memory/source/memory/environ.c#L103> 0, /* inherit_console */ 104 <http://www.winehq.com/source/memory/source/memory/environ.c#L104> 0, /* break_type */ 105 <http://www.winehq.com/source/memory/source/memory/environ.c#L105> 0, /* break_sem */ 106 <http://www.winehq.com/source/memory/source/memory/environ.c#L106> 0, /* break_event */ 107 <http://www.winehq.com/source/memory/source/memory/environ.c#L107> 0, /* break_thread */ 108 <http://www.winehq.com/source/memory/source/memory/environ.c#L108> 0 /* break_handlers */ 109 <http://www.winehq.com/source/memory/source/memory/environ.c#L109> }; hStdin and hStdout are always 0. So that's the value the function always will return. I've tested it in Win32 enviroment and returns a number corresponding to the specific handler for each call. 7 and 8 are the usual numbers. I could supose 0 as a valid number in wine, but FlushConsoleInputBuffer(conhanin) fails and tells me I'm using a wrong handler. Does anyone know more about this GetStdHandle implementation ? Why is current_envdb set to 0 values ? Thanks in advance, Ignasi Villagrasa.
