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b/images/image.png new file mode 100644 index 0000000000000000000000000000000000000000..42ca3ece7a7f5ce23e5cc87e38d81211754d510f Binary files /dev/null and b/images/image.png differ diff --git a/lab_2_7.md b/lab_2_7.md new file mode 100644 index 0000000000000000000000000000000000000000..765968040f4a467127e27479dac17d9c4d5cade0 --- /dev/null +++ b/lab_2_7.md @@ -0,0 +1,69 @@ +# 注册表结构和注册表值类型 + + + + + +*** + +## 1 结构 + +包含关于一个注册表值的信息。列表中的RegQueryMultipleValues函数使用此结构。 + +```cpp +typedef struct value_entW { + LPWSTR ve_valuename; + DWORD ve_valuelen; + DWORD_PTR ve_valueptr; + DWORD ve_type; +} VALENTW, *PVALENTW; +``` + +**ve_valuename** +要检索的值的名称。请确保在调用RegQueryMultipleValues之前设置此成员然后再调用RegQueryMultipleValues。 + +**ve_valuelen** +ve_valueptr所指向的数据的大小，以字节为单位。 + +**ve_valueptr** +一个指向值输入数据的指针。这是一个指针，指向在lpValueBuf缓冲区中返回的值的数据的指针，由RegQueryMultipleValues填写的缓冲区中的值的指针。 + +**ve_type** +ve_valueptr所指向的数据类型。关于可能的类型列表可能的类型，请看注册表值类型。 + + +## 2 值的类型 + +下面的例子是走一个REG_MULTI_SZ字符串。 +```cpp +#include +#include +#include + +void SampleSzz(PTSTR pszz) +{ + _tprintf(_TEXT("\tBegin multi-sz string\n")); + while (*pszz) + { + _tprintf(_TEXT("\t\t%s\n"), pszz); + pszz = pszz + _tcslen(pszz) + 1; + } + _tprintf(_TEXT("\tEnd multi-sz\n")); +} + +int __cdecl main(int argc, char **argv) +{ + // Because the compiler adds a \0 at the end of quoted strings, + // there are two \0 terminators at the end. + + _tprintf(_TEXT("Conventional multi-sz string:\n")); + SampleSzz(_TEXT("String1\0String2\0String3\0LastString\0")); + + _tprintf(_TEXT("\nTest case with no strings:\n")); + SampleSzz(_TEXT("")); + + return 0; +} +``` + + diff --git a/lab_2_8.md b/lab_2_8.md new file mode 100644 index 0000000000000000000000000000000000000000..44e7bcec6246e93dcac9073569eb7544190a3090 --- /dev/null +++ b/lab_2_8.md @@ -0,0 +1,122 @@ +# 枚举注册表子键 + + + + +*** + +这个经验样本使用RegQueryInfoKey、RegEnumKeyEx,和RegEnumValue函数来列举指定键的子键。传递给每个函数的hKey参数是一个打开的钥匙的句柄。这个键必须在函数调用前被打开调用之前打开之后关闭。 + +```cpp +// QueryKey - 枚举键的子键及其相关值。 +// hKey - 要列举其子键和值的键。 + +#include +#include +#include + +#define MAX_KEY_LENGTH 255 +#define MAX_VALUE_NAME 16383 + +void QueryKey(HKEY hKey) +{ + TCHAR achKey[MAX_KEY_LENGTH]; // 子键名称的缓冲区 + DWORD cbName; // 名称字符串的大小 + TCHAR achClass[MAX_PATH] = TEXT(""); // 类名的缓冲区 + DWORD cchClassName = MAX_PATH; // 类字符串的大小 + DWORD cSubKeys=0; // 子密钥的数量 + DWORD cbMaxSubKey; // 最大的子键尺寸 + DWORD cchMaxClass; // 最长级别的字符串 + DWORD cValues; // 键值的数量 + DWORD cchMaxValue; // 最长的值名称 + DWORD cbMaxValueData; // 最长值数据 + DWORD cbSecurityDescriptor; // 安全描述符的大小 + FILETIME ftLastWriteTime; // 最后写入时间 + + DWORD i, retCode; + + TCHAR achValue[MAX_VALUE_NAME]; + DWORD cchValue = MAX_VALUE_NAME; + + // 获取类的名称和值的数量。 + retCode = RegQueryInfoKey( + hKey, // 钥匙柄 + achClass, // 类名的缓冲区 + &cchClassName, // 类字符串的大小 + NULL, // 保留 + &cSubKeys, // 子密钥的数量 + &cbMaxSubKey, // 最长的子键尺寸 + &cchMaxClass, // 最长级别的字符串 + &cValues, // 这个键的值的数量 + &cchMaxValue, // 最长的值名称 + &cbMaxValueData, // 最长值数据 + &cbSecurityDescriptor, //安全描述符 + &ftLastWriteTime); // 最后写作时间 + + //枚举子键，直到RegEnumKeyEx失败。 + + if (cSubKeys) + { + printf( "\nNumber of subkeys: %d\n", cSubKeys); + + for (i=0; i