C# Signature:

[DllImport("oleacc.dll", PreserveSig=false)]
[return: MarshalAs(UnmanagedType.Interface)]
static extern object ObjectFromLresult(UIntPtr lResult,
     [MarshalAs(UnmanagedType.LPStruct)] Guid refiid, IntPtr wParam);
[DllImport("oleacc.dll")]
internal static extern int ObjectFromLresult(
    IntPtr lResult,
    [In] ref Guid refiid,
    IntPtr wParam,
    [Out, MarshalAs(UnmanagedType.Interface)] out object ppvObject);

VB Signature:

Declare Auto Function ObjectFromLresult Lib "oleacc.dll" (ByVal lResult As UIntPtr, <MarshalAs(UnmanagedType.LPStruct)> ByVal refiid As Guid, ByVal wParam As IntPtr) As <MarshalAs(UnmanagedType.Interface)> Object

or

<Dllimport("oleacc.dll")> _
Shared Function ObjectFromLresult(ByVal lResult As UIntPtr, <MarshalAs(UnmanagedType.LPStruct)> ByVal refiid As Guid, ByVal wParam As IntPtr) As <MarshalAs(UnmanagedType.Interface)> Object
End Function

Declare Function ObjectFromLresult Lib "oleacc.dll" (TODO) As TODO

User-Defined Types:

None.

Notes:

None.

Tips & Tricks:

Please add some!

Sample Code:

// Get the ActiveX interface of some window of class "Internet Explorer_Server"
IntPtr hWnd = GetThatWindow(); // from wherever
uint nMsg = RegisterWindowMessage("WM_HTML_GETOBJECT");
UIntPtr lRes;
if ( SendMessageTimeout(hWnd, nMsg, UIntPtr.Zero, IntPtr.Zero,
     SendMessageTimeoutFlags.SMTO_ABORTIFHUNG, 1000, out lRes) == IntPtr.Zero )
     return null;
return (mshtml.IHTMLDocument) ObjectFromLresult(lRes,
     typeof(mshtml.IHTMLDocument).GUID, IntPtr.Zero);

Alternative Managed API:

Do you know one? Please contribute it!

Please add some!

Alternative Managed API:

Do you know one? Please contribute it!

Please edit this page!

Do you have...

• helpful tips or sample code to share for using this API in managed code?
• corrections to the existing content?
• variations of the signature you want to share?
• additional languages you want to include?

Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).