vc++ mfc 操作注册表

	// 打开注册表
	HKEY hKey;
	CString subkey = _T("MIME\\Database\\Content Type");
	if (RegOpenKeyEx(HKEY_CLASSES_ROOT, subkey, 0, KEY_ALL_ACCESS, &hKey)){
		AfxMessageBox(_T("打开注册表失败！"));
		return;
	}

	//添加键值
	CString itemname = _T("zyh");
	TCHAR itemvalue[] = _T("80000");
	if (RegSetValueEx(hKey, itemname, 0, REG_MULTI_SZ, (BYTE*)itemvalue, sizeof(itemvalue))){
		AfxMessageBox(_T("写入注册表失败！"));
		return;
	}
	RegFlushKey(hKey);

	//获取注册表键值
	DWORD dwType, dwData;
	TCHAR tData[64];
	if (RegQueryValueEx(hKey, itemname, NULL, &dwType, (BYTE*)tData, &dwData)){
		AfxMessageBox(_T("获取注册表值失败！"));
		RegCloseKey(hKey);
		return;
	}
	RegCloseKey(hKey);
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