Read the string send through PostMessage

[MGupta123]

I have an application which has 2 components. One component is a COM dll (C++). The other is the Dot Net (C#) User Interface. I am Doing a PostMessage in the COM dll and handling this postmessage in the C# User Interface. My problem is that I am not ablr to get the string which I am sending through postmessage LPAram.

Here is the code.
COM code to send the string :

CString sRestoreProg(_T("CHKPT_RESTORE_DEVICE"));
UINT nRestoreDevice = RegisterWindowMessage(sRestoreProg);
CString name = "Kdevice ";
CString * s = new CString(name);
int i = name.GetLength();
PostMessage( hRestHWnd, nRestoreDevice , i+1, (LPARAM)s );

Here is the C# code:

int m_gettext = RegisterWindowMessageA("CHKPT_RESTORE_DEVICE");

public struct MyStruct
{
public string str;
}

In the wndproc()...

if(m.Msg == m_gettext)
{
MyStruct strLPARAM = (MyStruct) m.GetLParam(typeof(MyStruct));
}


Result : strLParam.str gives "K".. which is the first alphabet of the sent string "kdevice".

How to get the whole string put of this IntPtr?