'type cast' : cannot convert from 'System::IntPtr' to 'PDEV_BROADCAST_HDR'

Statement

void ProcMsg::getMessage(Message *m, Boolean Inserted)
{
PDEV_BROADCAST_HDR lpdb = (PDEV_BROADCAST_HDR)m->LParam;
}

above statement was came out with error 'type cast' : cannot convert from 'System::IntPtr' to 'PDEV_BROADCAST_HDR'

Question:

May i know how to cast the structure PDEV_BROADCAST_HDR to System::IntPtr.

D. Choquette
Information provided is not enough to answer this question.

Could you tells us if this application is a mixed mode (being compiled with /Clr).

How have you defined Message class\struct.

In Message have you deined LParam as IntPtr or LPARAM

If you are using mix mode application i.e (compiling with /Clr) and LParam is defined as IntPtr you should use

System::Runtime::InteropServices::Marshal::PtrToStructure

Hope this helps
paolod
http://msdn2.microsoft.com/en-us/library/4ca6d5z7(VS.80).aspx

Hope this gives you some idea
FLDaveM

yes I compiling with /Clr.

How to use System::Runtime::InteropServices::Marshal::PtrToStructure
'type cast' : cannot convert from 'System::IntPtr' to 'PDEV_BROADCAST_HDR'