Question

I need to grab the path from the registry. The following code works except for the last part where I’m storing the path to the string. Running the debugger in Visual Studio 2008 the char array has the path, but every other character is a zero. This results in the string only being assigned the first letter. I’ve tried changing char res[1024] to char *res = new char[1024] and this just makes it store the first letter in the char array instead of the string. The rest of the program needs the path as a string datatype so it can’t stay as a char array. What am I missing here?

unsigned long type=REG_SZ, size=1024;
string path;
char res[1024];
HKEY key;

if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("SOFTWARE\\Classes\\dsn\\shell\\open\\command"), NULL, KEY_READ, &key)==ERROR_SUCCESS){

    RegQueryValueEx(key,
    NULL,// YOUR value
    NULL,
    &type,
    (LPBYTE)res,
    &size);
    RegCloseKey(key);

    path = string(res);
}

Answer 1

You’re getting back a Unicode string, but assigning it to a char-based string.

You could switch path’s class to being a ‘tstring’ or ‘wstring’, or use RegQueryValueExA (A for ASCII).