有一個讀取系統資料庫資訊的程式 if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, subkeystring , 0, KEY_READ, &hKey) == ERROR_SUCCESS)/
,在32位下完全正常,但是在64位傳回值正确,但就是讀不到東西。後來單步發現讀不到東西,就搜64位讀系統資料庫失敗,發現需要加
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, subkeystring , 0,KEY_READ|KEY_WOW64_64KEY, &hKey) == ERROR_SUCCESS)就可以了,我是全部把權限提高,還可以根據不同的作業系統,設定不同的參數。
typedef BOOL (WINAPI *LPFN_ISWOW64PROCESS) (HANDLE, PBOOL);
LPFN_ISWOW64PROCESS fnIsWow64Process;
IsWow64傳回TRUE則是64位系統,否則為32位系統。
BOOL IsWow64()
{
BOOL bIsWow64 = FALSE;
fnIsWow64Process = (LPFN_ISWOW64PROCESS) GetProcAddress(
GetModuleHandle(TEXT("kernel32")),"IsWow64Process");
if(NULL != fnIsWow64Process)
{
if (!fnIsWow64Process(GetCurrentProcess(),&bIsWow64))
{
return FALSE;
}
}
return bIsWow64;
}
可參考的文獻:
http://msdn.microsoft.com/en-us/library/aa384129(v=VS.85).aspx
http://www.codeproject.com/Articles/51326/Net-Compilation-registry-accessing-and-applicatio
http://boluns.blog.163.com/blog/static/69845968201071132032313/
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The OpenSubKey will return the searched key, allowing you to specify reading from the normal registry, or from the alternative 32-bit, WOW64 registry. The following example reads from the 32-bit WOW64 registry:
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You just need to place your key name where “[Key]” is.