Bool vs. BOOLEAN in guided prototypes

Question

I am trying to create a managed prototype in C # for an [CreateSymbolicLink][1]API function . The prototype in WinBase.h is:

BOOLEAN APIENTRY CreateSymbolicLink (
    __in LPCWSTR lpSymlinkFileName,
    __in LPCWSTR lpTargetFileName,
    __in DWORD dwFlags
    );

And BOOLEAN is defined as BYTEin WinNT.h. Good. Therefore, my guided prototype should be:

[DllImport("kernel32.dll", SetLastError = true)]
static extern bool CreateSymbolicLink(string SymlinkFileName, string TargetFileName, UInt32 Flags);

At least I would think so. boolis just an alias for a System.Booleansingle-byte value. But it doesn't seem to work.

I am executing this code:

bool retval = CreateSymbolicLink(LinkFilename, TargetFilename, 0);

He returns true. But a symbolic link has not been created. The reason it was not created is because I do not work with elevated privileges. GetLastErrorreturns 1314, which according to WinError.h means that I do not have the required permission. As expected. But why is my return value true?

, :

static extern byte CreateSymbolicLink(string SymlinkFileName, string TargetFileName, UInt32 Flags);

:

byte retval = CreateSymbolicLink(LinkFilename, TargetFilename, 0);

: retval 0, , .

, , bool BOOLEAN ?

Answer 1

MarshalAs:

[DllImport("kernel32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.U1)]
static extern bool CreateSymbolicLink(string SymlinkFileName, 
    string TargetFileName, UInt32 Flags);

bool native 4 - , , true bool, . ( .)

Answer 2

PInvoke - bools. , .

• http://blogs.msdn.com/jaredpar/archive/2008/10/14/pinvoke-and-bool-or-should-i-say-bool.aspx

.