有谁能告诉我 怎么用RegQueryValue 函数去得到一个注册表里的数值呢！

[cherryppp]

[lvlu]

RegOpenKeyEx(HKEY_CURRENT_USER, szRegPath,0, KEY_READ, &hkey);
...//定义dwType,cbData,buffer
RegQueryValueEx(hkey,NULL,NULL,&dwType,(LPBYTE)&buffer,&cbData);
RegCloseKey(hkey);

[shadowac]

查MSDN啊！！！！！

[huangw]

有一段代码，你看看就知道怎么用了。
//读键值
void CReg01Dlg::OnReadValue()
{
LONG lRes;
HKEY hBootKey;
int iIndex;
CString sSubKeyName;
CString sTempPath;

iIndex = m_SubKey_List.GetCurSel();
if (iIndex == LB_ERR)
{
return;
}
m_SubKey_List.GetText(iIndex,sSubKeyName);
sTempPath = KEYPATH;
sTempPath = sTempPath + "\\";
sTempPath = sTempPath + sSubKeyName;

lRes = ::RegOpenKeyEx(
HKEY_LOCAL_MACHINE,
LPCTSTR(sTempPath),
0,
KEY_ALL_ACCESS,
&hBootKey);
if (lRes == ERROR_SUCCESS)
{
UpdateData(TRUE);
if (m_Name == "")
{
//显示该子键下所有值
CReg01Dlg::ShowNameValueMsg(hBootKey);
}
else
{
//显示指定名称的值
DWORD dwType;
unsigned char* lpValue = new unsigned char[1025];
DWORD dwValueLen = 1024; // 注意：必须先赋值

lRes = ::RegQueryValueEx(
hBootKey,
LPCTSTR(m_Name),
NULL,
&dwType,
lpValue,
&dwValueLen);
if (lRes == ERROR_SUCCESS)
{
lpValue[dwValueLen] = NULL;
m_Value = (CString)((char*)lpValue);
UpdateData(FALSE);
}
delete lpValue;
}
}
::RegCloseKey(hBootKey);
return;
}