windows c++ RegSetValueEx 在注册表中只设置一个字符值
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c++ RegSetValueEx sets only one char value in registry
提问by Tom
I'm casting (char * ) on data and i'm getting only one char value in the registry. if i don't use the casting msvc 2010 tells me that the argument type LPCTSTR is incompatible with const char *.
我正在对数据进行 (char * ) 转换，但我在注册表中只获得了一个 char 值。如果我不使用强制转换 msvc 2010 会告诉我参数类型 LPCTSTR 与 const char * 不兼容。
can someone help me?
有人能帮我吗？
HKEY hKey;
LPCTSTR sk = TEXT("SOFTWARE\Microsoft\Windows\CurrentVersion\Run");
LONG openRes = RegOpenKeyEx(HKEY_CURRENT_USER, sk, 0, KEY_ALL_ACCESS , &hKey);
if (openRes==ERROR_SUCCESS) {
printf("Success opening key.");
} else {
printf("Error opening key.");
}
LPCTSTR value = TEXT("SomeKey");
LPCTSTR data = L"TestDataLPCTSTR value = TEXT("SomeKey");
LPCTSTR data = TEXT("TestData");
LONG setRes = RegSetValueEx(hKey, value, 0, REG_SZ, (LPBYTE)data, _tcslen(data) * sizeof(TCHAR));
";
LONG setRes = RegSetValueEx (hKey, value, 0, REG_SZ, (LPBYTE)data, strlen(data)+1);
if (setRes == ERROR_SUCCESS) {
printf("Success writing to Registry.");
} else {
printf("Error writing to Registry.");
}
cout << setRes << endl;
LONG closeOut = RegCloseKey(hKey);
if (closeOut == ERROR_SUCCESS) {
printf("Success closing key.");
} else {
printf("Error closing key.");
}
回答by Joel Rondeau
strlen(data)is probably returning a value of 1, as strlen expects a char* and L"TestData\0"is wide. Use TEXT("TestData\0")and call _tcslen(data).
Note that RegSetValueExexpects the sizeof the data, so use _tcslen(data) * sizeof(TCHAR)
strlen(data)可能返回值 1，因为 strlen 需要一个 char* 并且L"TestData\0"是宽的。使用TEXT("TestData\0")和调用_tcslen(data)。
请注意，RegSetValueEx期望数据的大小，因此请使用_tcslen(data) * sizeof(TCHAR)
回答by zenzelezz
Where are you casting data?
你在哪里投射数据？
Either way, it looks like you may be working with wide characters, but you seem to be using "plain old" strlen - instead of wcslen or some other function intended to work with wide-character strings.
无论哪种方式，看起来您可能正在使用宽字符，但您似乎正在使用“普通旧” strlen - 而不是 wcslen 或其他一些旨在处理宽字符串的函数。
回答by vnduan
replace the L"TestData"by _T("TestData");and strlen(data)+1by tcslen(data) * sizeof(TCHAR));
替换L"TestData"by_T("TestData");和strlen(data)+1bytcslen(data) * sizeof(TCHAR));
so your code looks like this :
所以你的代码看起来像这样：
##代码##