使用VC ++访问注册表键路径 [英] accessing registry key path using VC++

问题描述

嗨大家从以下代码我试图找出是否存在该注册表路径，它成功地给了我一个输出。但是我在这段代码中注意到的是，由于64位操作系统，它默认只检查wow6432Node。现在我想要做的是我想提出一个特定的条件来检查它的路径，即它检查

SOFTWARE \\ Microsoft \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\Windows®更新\\Auto Update \\Power以及此

SOFTWARE \\wow6432Node \\ Microsoft \\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\ WindowsUpdate \\Auto Update \\Power

Hi guys from the following code i try to find out whether that registry path exists or not and it successfully gives me an output. but the thing that i noticed in this code is it checks only wow6432Node by default due to 64 bit OS. now what i want to do is i want to put a specific condition through which it checks both the path i.e it checks
"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\WindowsUpdate\\Auto Update\\Power" as well as this
"SOFTWARE\\wow6432Node\\Microsoft\\Windows\\CurrentVersion\\WindowsUpdate\\Auto Update\\Power"

// letsc.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"

//#include <winreg.h>
#include<Windows.h>
#include<string>

bool function();
int _tmain(int argc, _TCHAR* argv[])
{
	if (function())
	{
      //hello

	}
	getchar;
	return 0;
	
}

bool function()
{
	HKEY hKey;
	LPCTSTR subKey;
	LPCTSTR subValue;
	HKEY resKey;
	DWORD dataLen;
	hKey = HKEY_LOCAL_MACHINE;
	//subKey = "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Component Based Servicing\\Version";
	subKey = "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\WindowsUpdate\\Auto Update\\Power";
	//subKey = "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Component Based Servicing\\Version";


	//HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\WindowsUpdate\\Auto Update\\RebootRequired"
	long key = RegOpenKeyExA(hKey, subKey, 10, KEY_READ | 0 , &resKey);
	if (key == ERROR_SUCCESS)
		{
		printf("Power folder exists");
		/*subValue = "Power";
		long key = RegQueryValueExA(resKey, subValue, NULL, NULL, NULL, NULL);
		if (key == ERROR_FILE_NOT_FOUND)
		{
			return false;
		}
		else
		{
			std::string data = "C:\\WINDOWS\\system32\\program.exe";
			DWORD dataLen = data.size() + 1;

			long key = RegSetValueExA(resKey, subValue, 0, REG_SZ, (const BYTE*)data.c_str(), dataLen);
			if (key == ERROR_SUCCESS)
			{
				return true;
			}
			else
			{
				return false;
			}
		}*/
	}
	else
	{
		printf("power folder doesnot exists");
		return false;
	}
}

注意上面的代码虽然我给了一个路径为SOFTWARE \\ Microsoft \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\只有





从此我必须做什么才能同时访问这两条路径？

Note in above code though i have given a path as "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\WindowsUpdate\\Auto Update\\Power"
but still it checks wow registry only


henceforth what must i do to get access to both path simultaneously?

推荐答案

hi，

一般意图是只在其中一个路径下创建注册表项。因此，如果用户安装了64位版本，那么我无法猜测为什么应用程序也会在wow6432Node节点下创建注册表项。 （可能是注册表重定向或其他东西）

检查确定系统是64位还是32位就足以应对这种情况，然后相应地检查密钥。



查看Raymond Chen的建议 [< a href =http://blogs.msdn.com/b/oldnewthing/archive/2005/02/01/364563.aspxtarget =_ blanktitle =New Window> ^ ]



希望这会有所帮助！



终于在这些旗帜的帮助下解决了：

https://msdn.microsoft.com/ en-us / library / windows / desktop / aa384129％28v = vs.85％29.aspx [ ^ ]



请参阅评论如下。

generally the intention is that the registry entry will be created under one of the paths only. So if the user has installed the 64 bit version, then i can not guess why would the application create the registry key under wow6432Node node also. (maybe registry redirection or something)
A check to determine whether the system is 64 bit or 32 bit is enough for this situation and then check for the key accordingly.

check out Raymond Chen's suggestion[^]

hope this helps !

was finally solved with the help of these flags:
https://msdn.microsoft.com/en-us/library/windows/desktop/aa384129%28v=vs.85%29.aspx[^]

please refer the comments below.

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