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April 19th, 2012, 07:39 PM
#1
win registry function help
i have this code to list registry key values and subkeys
Code:
#include <windows.h>
#include <stdio.h>
#include <tchar.h>
#define MAX_KEY_LENGTH 255
#define MAX_VALUE_NAME 16383
void QueryKey(HKEY hKey)
{
TCHAR achKey[MAX_KEY_LENGTH]; // buffer for subkey name
DWORD cbName; // size of name string
TCHAR achClass[MAX_PATH] = TEXT(""); // buffer for class name
DWORD cchClassName = MAX_PATH; // size of class string
DWORD cSubKeys=0; // 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, retCode;
TCHAR achValue[MAX_VALUE_NAME];
DWORD cchValue = MAX_VALUE_NAME;
// Get the class name and the value count.
retCode = 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
// Enumerate the subkeys, until RegEnumKeyEx fails.
if (cSubKeys)
{
printf( "\nNumber of subkeys: %d\n", cSubKeys);
for (i=0; i<cSubKeys; i++)
{
cbName = MAX_KEY_LENGTH;
retCode = RegEnumKeyEx(hKey, i,
achKey,
&cbName,
NULL,
NULL,
NULL,
&ftLastWriteTime);
if (retCode == ERROR_SUCCESS)
{
_tprintf(TEXT("(%d) %s\n"), i+1, achKey);
}
}
}
// Enumerate the key values.
if (cValues)
{
printf( "\nNumber of values: %d\n", cValues);
for (i=0, retCode=ERROR_SUCCESS; i<cValues; i++)
{
const DWORD maxValueBytes=300;
BYTE valueBytes[maxValueBytes];
DWORD valueSize=maxValueBytes;
DWORD valueType=0;
cchValue = MAX_VALUE_NAME;
achValue[0] = '\0';
retCode = RegEnumValue(hKey, i,
achValue,
&cchValue,
NULL,
&valueType,
valueBytes,
&valueSize);
if (retCode == ERROR_SUCCESS )
{
_tprintf(TEXT("(%d) %s (%d - %d bytes)\n"), i+1, achValue,valueType,valueSize);
switch (valueType) {
case REG_BINARY:
_tprintf(TEXT(" The value is binary (0x%X, 0x%X, 0x%X ...)\n"),valueBytes[0],valueBytes[1],valueBytes[2]);
break;
case REG_DWORD:
//case REG_DWORD_LITTLE_ENDIAN:
_tprintf(TEXT(" The value is a DWORD (%d)\n"),*(DWORD *)valueBytes);
break;
case REG_DWORD_BIG_ENDIAN:
_tprintf(TEXT(" The value is a DWORD (big endian) (%d)\n"),(valueBytes[0]<<24)|(valueBytes[1]<<16)|(valueBytes[2]<<8)|valueBytes[3]);
break;
case REG_EXPAND_SZ:
case REG_SZ:
_tprintf(TEXT(" The value is a string\n"));
break;
case REG_LINK:
_tprintf(TEXT(" The value is a link\n"));
break;
case REG_MULTI_SZ:
_tprintf(TEXT(" The value is a multi-string\n"));
break;
case REG_NONE:
_tprintf(TEXT(" There is no spoon... sorry, value\n"));
break;
case REG_RESOURCE_LIST:
_tprintf(TEXT(" The value is a resource list\n"));
break;
default:
_tprintf(TEXT(" Unknown value type\n"));
break;
}
}
else
{
_tprintf(TEXT("error reading value %d - %d\n"),i+1,retCode);
}
}
}
}
void __cdecl _tmain(void)
{
HKEY hTestKey;
// if( RegOpenKeyEx( HKEY_CURRENT_USER,
// TEXT("SOFTWARE\\Microsoft"),
if( RegOpenKeyEx( HKEY_LOCAL_MACHINE,
TEXT("SYSTEM\\Setup"),
0,
KEY_READ,
&hTestKey) == ERROR_SUCCESS
)
{
QueryKey(hTestKey);
}
RegCloseKey(hTestKey);
system("pause");
}
how can i modify the function void QueryKey(HKEY hKey) to return registry key values and subvalues and list/print them in void __cdecl _tmain(void) function
thanks a lot
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