Calling C++ method from C# with pointer parameter (WCT)

Question

I am new to this concept of calling C++ methods from C#.

Assuming that I want to call a C++ function GetThreadWaitChain from C#:

https://msdn.micr

Answer 1

The GetThreadWaitChain function prototype is incorrect. It should be:

[DllImport("advapi32.dll", SetLastError = true)]
public static extern bool GetThreadWaitChain(
    IntPtr  WctHandle,
    IntPtr Context,
    UInt32 Flags,
    int ThreadId,
    ref int NodeCount,    
    [MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 4)] 
    [In, Out] 
    WAITCHAIN_NODE_INFO[] NodeInfoArray,  
    out int IsCycle
);

When calling first allocate the WAITCHAIN_NODE_INFO array.

WAITCHAIN_NODE_INFO[] data = new WAITCHAIN_NODE_INFO[16];