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// license:BSD-3-Clause
// copyright-holders:Aaron Giles
//============================================================
//
// winutil.c - Win32 OSD core utility functions
//
//============================================================
// standard windows headers
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
// MAMEOS headers
#include "winutil.h"
#include "strconv.h"
//============================================================
// win_error_to_file_error
//============================================================
file_error win_error_to_file_error(DWORD error)
{
file_error filerr;
// convert a Windows error to a file_error
switch (error)
{
case ERROR_SUCCESS:
filerr = FILERR_NONE;
break;
case ERROR_OUTOFMEMORY:
filerr = FILERR_OUT_OF_MEMORY;
break;
case ERROR_FILE_NOT_FOUND:
case ERROR_FILENAME_EXCED_RANGE:
case ERROR_PATH_NOT_FOUND:
filerr = FILERR_NOT_FOUND;
break;
case ERROR_ACCESS_DENIED:
filerr = FILERR_ACCESS_DENIED;
break;
case ERROR_SHARING_VIOLATION:
filerr = FILERR_ALREADY_OPEN;
break;
default:
filerr = FILERR_FAILURE;
break;
}
return filerr;
}
//============================================================
// win_attributes_to_entry_type
//============================================================
osd_dir_entry_type win_attributes_to_entry_type(DWORD attributes)
{
if (attributes == 0xFFFFFFFF)
return ENTTYPE_NONE;
else if (attributes & FILE_ATTRIBUTE_DIRECTORY)
return ENTTYPE_DIR;
else
return ENTTYPE_FILE;
}
//============================================================
// win_is_gui_application
//============================================================
BOOL win_is_gui_application(void)
{
static BOOL is_gui_frontend;
static BOOL is_first_time = TRUE;
HMODULE module;
BYTE *image_ptr;
IMAGE_DOS_HEADER *dos_header;
IMAGE_NT_HEADERS *nt_headers;
IMAGE_OPTIONAL_HEADER *opt_header;
// is this the first time we've been ran?
if (is_first_time)
{
is_first_time = FALSE;
// get the current module
module = GetModuleHandleUni();
if (!module)
return FALSE;
image_ptr = (BYTE*) module;
// access the DOS header
dos_header = (IMAGE_DOS_HEADER *) image_ptr;
if (dos_header->e_magic != IMAGE_DOS_SIGNATURE)
return FALSE;
// access the NT headers
nt_headers = (IMAGE_NT_HEADERS *) ((BYTE*)(dos_header) + (DWORD)(dos_header->e_lfanew));
if (nt_headers->Signature != IMAGE_NT_SIGNATURE)
return FALSE;
// access the optional header
opt_header = &nt_headers->OptionalHeader;
switch (opt_header->Subsystem)
{
case IMAGE_SUBSYSTEM_WINDOWS_GUI:
is_gui_frontend = TRUE;
break;
case IMAGE_SUBSYSTEM_WINDOWS_CUI:
is_gui_frontend = FALSE;
break;
}
}
return is_gui_frontend;
}
//-------------------------------------------------
// Universal way to get module handle
//-------------------------------------------------
HMODULE WINAPI GetModuleHandleUni()
{
MEMORY_BASIC_INFORMATION mbi;
VirtualQuery((LPCVOID)GetModuleHandleUni, &mbi, sizeof(mbi));
return (HMODULE)mbi.AllocationBase;
}
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