PInvoke Interop Assistant

I noticed a new tool on CodePlex the other day called the PInvoke Interop Assistant that automatically converts between managed and unmanaged type signatures. In addition to converting API functions, it also pulls together all of the structures and types used by the API. Here's a sample showing how it handles CoCreateInstance.

 [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
public struct IUnknown {
    
    /// IUnknownVtbl*
    public System.IntPtr lpVtbl;
}

[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential, CharSet=System.Runtime.InteropServices.CharSet.Ansi)]
public struct GUID {
    
    /// unsigned int
    public uint Data1;
    
    /// unsigned short
    public ushort Data2;
    
    /// unsigned short
    public ushort Data3;
    
    /// unsigned char[8]
    [System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.ByValTStr, SizeConst=8)]
    public string Data4;
}

[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
public struct IUnknownVtbl {
    
    /// IUnknownVtbl_QueryInterface
    public IUnknownVtbl_QueryInterface AnonymousMember1;
    
    /// IUnknownVtbl_AddRef
    public IUnknownVtbl_AddRef AnonymousMember2;
    
    /// IUnknownVtbl_Release
    public IUnknownVtbl_Release AnonymousMember3;
}

/// Return Type: HRESULT->LONG->int
///This: IUnknown*
///riid: IID*
///ppvObject: void**
[System.Runtime.InteropServices.UnmanagedFunctionPointerAttribute(System.Runtime.InteropServices.CallingConvention.StdCall)]
public delegate int IUnknownVtbl_QueryInterface(ref IUnknown This, ref GUID riid, ref System.IntPtr ppvObject);

/// Return Type: ULONG->unsigned int
///This: IUnknown*
[System.Runtime.InteropServices.UnmanagedFunctionPointerAttribute(System.Runtime.InteropServices.CallingConvention.StdCall)]
public delegate uint IUnknownVtbl_AddRef(ref IUnknown This);

/// Return Type: ULONG->unsigned int
///This: IUnknown*
[System.Runtime.InteropServices.UnmanagedFunctionPointerAttribute(System.Runtime.InteropServices.CallingConvention.StdCall)]
public delegate uint IUnknownVtbl_Release(ref IUnknown This);

public partial class NativeMethods {
    
    /// Return Type: HRESULT->LONG->int
    ///rclsid: IID*
    ///pUnkOuter: LPUNKNOWN->IUnknown*
    ///dwClsContext: DWORD->unsigned int
    ///riid: IID*
    ///ppv: LPVOID*
    [System.Runtime.InteropServices.DllImportAttribute("ole32.dll", EntryPoint="CoCreateInstance", CallingConvention=System.Runtime.InteropServices.CallingConvention.StdCall)]
public static extern  int CoCreateInstance(ref GUID rclsid, ref IUnknown pUnkOuter, uint dwClsContext, ref GUID riid, ref System.IntPtr ppv) ;

}

Comments

• Anonymous
  June 25, 2008
  Via Nicholas Allen's post . "new tool on CodePlex the other day called the PInvoke Interop Assistant

• Anonymous
  July 08, 2008
  Hi, Another nice tool - WCF Visualzers : http://www.codeplex.com/WCFVisualizer

• Anonymous
  January 15, 2009
  Via Nicholas Allen's post . "new tool on CodePlex the other day called the PInvoke Interop Assistant