枚举注册表键名与键值
枚举注册表键名与键值的一个函数：
// QueryKey - Enumerates the subkeys of key, and the associated
// values, then copies the information about the keys and values
// into a pair of edit controls and list boxes.
// hDlg - Dialog box that contains the edit controls and list boxes.
// hKey - Key whose subkeys and values are to be enumerated.
void QueryKey(HWND hDlg, HANDLE hKey)
{
CHAR achKey[MAX_PATH];
CHAR achClass[MAX_PATH] = ""; // buffer for class name
DWORD cchClassName = MAX_PATH; // size of class string
DWORD cSubKeys; // number of subkeys
DWORD cbMaxSubKey; // longest subkey size
DWORD cchMaxClass; // longest class string
DWORD cValues; // number of values for key
DWORD cchMaxValue; // longest value name
DWORD cbMaxValueData; // longest value data
DWORD cbSecurityDescriptor; // size of security descriptor
FILETIME ftLastWriteTime; // last write time
DWORD i, j;
DWORD retCode, retValue;
CHAR achValue[MAX_VALUE_NAME];
DWORD cchValue = MAX_VALUE_NAME;
CHAR achBuff[80];
// Get the class name and the value count.
RegQueryInfoKey(hKey, // key handle
achClass, // buffer for class name
&cchClassName, // size of class string
NULL, // reserved
&cSubKeys, // number of subkeys
&cbMaxSubKey, // longest subkey size
&cchMaxClass, // longest class string
&cValues, // number of values for this key
&cchMaxValue, // longest value name
&cbMaxValueData, // longest value data
&cbSecurityDescriptor, // security descriptor
&ftLastWriteTime); // last write time
SetDlgItemText(hDlg, IDE_CLASS, achClass);
SetDlgItemInt(hDlg, IDE_CVALUES, cValues, FALSE);
SendMessage(GetDlgItem(hDlg, IDL_LISTBOX),
LB_ADDSTRING, 0, (LONG) "..");
// Enumerate the child keys, until RegEnumKeyEx fails. Then
// get the name of each child key and copy it into the list box.
SetCursor(LoadCursor(NULL, IDC_WAIT));
for (i = 0, retCode = ERROR_SUCCESS;
retCode == ERROR_SUCCESS; i++)
{
retCode = RegEnumKeyEx(hKey,
i,
achKey,
MAX_PATH,
NULL,
NULL,
NULL,
&ftLastWriteTime);
if (retCode == (DWORD)ERROR_SUCCESS)
{
SendMessage(GetDlgItem(hDlg, IDL_LISTBOX),
LB_ADDSTRING, 0, (LONG) achKey);
}
}
SetCursor(LoadCursor (NULL, IDC_ARROW));
// Enumerate the key values.
SetCursor(LoadCursor(NULL, IDC_WAIT));
if (cValues)
{
for (j = 0, retValue = ERROR_SUCCESS;
j < cValues; j++)
{
cchValue = MAX_VALUE_NAME;
achValue[0] = '/0';
retValue = RegEnumValue(hKey, j, achValue,
&cchValue,
NULL,
NULL, // &dwType,
NULL, // &bData,
NULL); // &bcData
if (retValue == (DWORD) ERROR_SUCCESS )
{
achBuff[0] = '/0';
// Add each value to a list box.
if (!lstrlen(achValue))
lstrcpy(achValue, "<NO NAME>");
wsprintf(achBuff, "%d) %s ", j, achValue);
SendMessage(GetDlgItem(hDlg,IDL_LISTBOX2),
LB_ADDSTRING, 0, (LONG) achBuff);
}
}
SetCursor(LoadCursor(NULL, IDC_ARROW));
}