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Modify Windows registry reading to check both 32-bit and 64-bit key locations.

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git-svn-id: https://svn.eduke32.com/eduke32@6111 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
hendricks266 2017-04-09 13:08:53 +00:00
parent f4fa0ceafd
commit 8cf65eb180
1 changed files with 18 additions and 7 deletions
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25
source/duke3d/src/common.cpp
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@ -13,6 +13,9 @@
# define NEED_SHLWAPI_H
# include "windows_inc.h"
# include "winbits.h"
# ifndef KEY_WOW64_64KEY
# define KEY_WOW64_64KEY 0x0100
# endif
# ifndef KEY_WOW64_32KEY
# define KEY_WOW64_32KEY 0x0200
# endif
@ -509,18 +512,26 @@ void G_LoadGroups(int32_t autoload)
#ifdef _WIN32
static int G_ReadRegistryValue(char const * const SubKey, char const * const Value, char * const Output, DWORD * OutputSize)
{
HKEY hkey;
LONG keygood = RegOpenKeyEx(HKEY_LOCAL_MACHINE, NULL, 0, KEY_READ | KEY_WOW64_32KEY, &hkey);
// KEY_WOW64_32KEY gets us around Wow6432Node on 64-bit builds
REGSAM const wow64keys[] = { KEY_WOW64_32KEY, KEY_WOW64_64KEY };
if (keygood != ERROR_SUCCESS)
return 0;
for (size_t k = 0; k < ARRAY_SIZE(wow64keys); ++k)
{
HKEY hkey;
LONG keygood = RegOpenKeyEx(HKEY_LOCAL_MACHINE, NULL, 0, KEY_READ | wow64keys[k], &hkey);
LONG retval = SHGetValueA(hkey, SubKey, Value, NULL, Output, OutputSize);
if (keygood != ERROR_SUCCESS)
continue;
RegCloseKey(hkey);
LONG retval = SHGetValueA(hkey, SubKey, Value, NULL, Output, OutputSize);
return retval == ERROR_SUCCESS;
RegCloseKey(hkey);
if (retval == ERROR_SUCCESS)
return 1;
}
return 0;
}
#endif