#include <iostream>
#include <assert.h>
#include "windows.h"
#include "tchar.h"
#include "conio.h"
#include "stdio.h"
using namespace std;

void wcharTochar(const wchar_t* wchar, char* chr, int length)
{
	WideCharToMultiByte(CP_ACP, 0, wchar, -1,
		chr, length, NULL, NULL);
}

bool OpenRegKey(HKEY& hRetKey)
{
	LPCWSTR sw = _T("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\App Paths\\ComputerZ_CN.exe");
	wprintf(L"SW is %s\n", sw);
	if (ERROR_SUCCESS == RegOpenKey(HKEY_LOCAL_MACHINE, sw, &hRetKey))
	{
		return true;
	}
	printf("OpenRegKey return is false!\n");
	return false;
}

bool QueryRegKey(LPCWSTR strSubKey, LPCWSTR strValueName, char* strValue, int length)//這里是傳3個(gè)參數(shù)
{
	DWORD dwType = REG_SZ;//定義數(shù)據(jù)類型
	DWORD dwLen = MAX_PATH;

	wchar_t data[MAX_PATH];
	HKEY hKey;
	HKEY hSubKey;
	if (OpenRegKey(hKey))
	{
		if (ERROR_SUCCESS == RegOpenKey(HKEY_LOCAL_MACHINE, strSubKey, &hSubKey))
		{
			TCHAR buf[256] = { 0 };

			if (ERROR_SUCCESS == RegQueryValueEx(hSubKey, strValueName, 0, &dwType, (LPBYTE)data, &dwLen))
			{
				wcharTochar(data, strValue, length);
				wprintf(L"data = %s,len= %d\n", data, strlen((const char*)data));
				RegCloseKey(hKey); //關(guān)閉注冊(cè)表
				return true;
			}
		}
		RegCloseKey(hKey); //關(guān)閉注冊(cè)表
	}

	return false;
}
int main()
{
	HKEY  hKey = NULL;
	string result;
	LPCWSTR strSubKey = _T("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\App Paths\\ComputerZ_CN.exe");
	LPCWSTR strValueName = _T("Path");
	char strValue[256];
	int length = 256;
	bool status = QueryRegKey(strSubKey, strValueName, strValue, length);
	printf("status is %d\n", status);
	printf("result is %s\n", strValue);
	return 0;
}

"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\ComputerZ_CN.exe"這一部分的ComputerZ_CN.exe，可以改成當(dāng)前目錄下任意的環(huán)境
例如：

代碼執(zhí)行的結(jié)果：

補(bǔ)充：任務(wù)注冊(cè)表打開方式（其中一種）
第一步：點(diǎn)擊搜索按鈕

第二步：輸入注冊(cè)編輯器

2.組策略常用功能（禁用任務(wù)管理器）

#include<iostream>
#include<Windows.h>
#include<GPEdit.h>
#include<Guiddef.h>
using namespace std;
#define   INITGUID 
//本地組策略是否禁用任務(wù)管理器
LRESULT DisableTaskMgr(int mark)
{
	::CoInitialize(NULL);
	LRESULT status;
	LRESULT hr = S_OK;
	IGroupPolicyObject* pGPO = NULL;
	hr = CoCreateInstance(CLSID_GroupPolicyObject, NULL, CLSCTX_INPROC_SERVER, IID_IGroupPolicyObject, (LPVOID*)&pGPO);
	if (hr == S_OK)
	{
		cout << "GPO創(chuàng)建成功\n";
	}
	else
	{
		cout << "GPO創(chuàng)建失敗\n";
		return E_FAIL;
	}
	DWORD dwSection = GPO_SECTION_USER;
	HKEY hGPOKey = 0;
	hr = pGPO->OpenLocalMachineGPO(GPO_OPEN_LOAD_REGISTRY);
	if (SUCCEEDED(hr))
	{
		cout << "打開本地機(jī)器成功\n";
	}
	else
	{
		cout << "打開本地失敗\n";
		return E_FAIL;
	}
	hr = pGPO->GetRegistryKey(dwSection, &hGPOKey);
	if (SUCCEEDED(hr))
	{
		cout << "加載注冊(cè)表成功\n";
	}
	else
	{
		cout << "加載注冊(cè)表失敗\n";
		return E_FAIL;
	}
	//禁用任務(wù)管理器
	HKEY hKey = NULL;
	if (mark == 1)
	{

		status = RegOpenKeyEx(hGPOKey, "Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System", 0,
			KEY_WRITE, &hKey);
		if (status != ERROR_SUCCESS)
		{
			status = RegCreateKeyEx(hGPOKey, "Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System", 0,
				NULL, REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hKey, NULL);
			if (status == S_OK)
			{
				cout << "創(chuàng)建鍵值成功\n";
			}
			else
			{
				cout << "創(chuàng)建鍵值失敗\n";
				return E_FAIL;
			}
		}
		DWORD lpData = 1;
		status = RegSetKeyValue(hKey, NULL, "DisableTaskMgr", REG_DWORD, (LPCVOID)&lpData, 4);
		status = RegCloseKey(hKey);


	}
	GUID Registerid = REGISTRY_EXTENSION_GUID;
	GUID ThisGuid = {
		0x0F6B957E,
		0x509E,
		0x11D1,
		{ 0xA7, 0xCC, 0x00, 0x00, 0xF8, 0x75, 0x71, 0xE3 }
	};
	RegCloseKey(hGPOKey);

	status = pGPO->Save(FALSE, TRUE, &Registerid, &ThisGuid);
	pGPO->Release();
	::CoUninitialize();
}
int main()
{

	DisableTaskMgr(1);
}

成功以后：
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