static string CFStringGetString (IntPtr handle)
{
if (handle == IntPtr.Zero)
return null;
string str;
int length = CFStringGetLength (handle);
IntPtr unicode = CFStringGetCharactersPtr (handle);
IntPtr buffer = IntPtr.Zero;
if (unicode == IntPtr.Zero) {
CFRange range = new CFRange (0, length);
buffer = Marshal.AllocCoTaskMem (length * 2);
CFStringGetCharacters (handle, range, buffer);
unicode = buffer;
}
unsafe {
str = new string ((char *) unicode, 0, length);
}
if (buffer != IntPtr.Zero)
Marshal.FreeCoTaskMem (buffer);
return str;
}
extern static void CFDataGetBytes (IntPtr handle, CFRange range, IntPtr buffer);
extern static void CFDataGetBytes(IntPtr handle, CFRange range, IntPtr buffer);
extern static IntPtr CFStringGetCharacters (IntPtr handle, CFRange range, IntPtr buffer);