public object InvokeScript(HTMLDocument htmlDocument_, string scriptName, params object[] args)
{
var htmlDocument = htmlDocument_ as IHTMLDocument2;
object invokeScript = null;
var pDispParams = new DispParams
{
rgvarg = IntPtr.Zero
};
try
{
var script = htmlDocument.Script as IDispatch;
if (script == null)
{
return(null);
}
var empty = Guid.Empty;
string[] rgszNames = { scriptName };
int[] rgDispId = { -1 };
var iDsOfNames = script.GetIDsOfNames(ref empty, rgszNames, 1,
Win32Interop.GetThreadLCID(), rgDispId);
if (!MsHtmlNativeUtility.Succeeded(iDsOfNames) || rgDispId[0] == -1)
{
return(null);
}
if (args != null)
{
Array.Reverse(args);
}
pDispParams.rgvarg = args == null ? IntPtr.Zero : MsHtmlNativeUtility.ArrayToVariantVector(args);
pDispParams.cArgs = args?.Length ?? 0;
pDispParams.rgdispidNamedArgs = IntPtr.Zero;
pDispParams.cNamedArgs = 0;
var pVarResult = new object[1];
var pExcepInfo = new ExcepInfo();
if (script.Invoke(rgDispId[0], ref empty, Win32Interop.GetThreadLCID(), 1, pDispParams, pVarResult,
pExcepInfo, null) == 0)
{
invokeScript = pVarResult[0];
}
}
catch (Exception exception)
{
if (MsHtmlNativeUtility.IsSecurityOrCriticalException(exception))
{
throw;
}
}
finally
{
if (pDispParams.rgvarg != IntPtr.Zero)
{
if (args != null)
{
MsHtmlNativeUtility.FreeVariantVector(pDispParams.rgvarg, args.Length);
}
}
}
return(invokeScript);
}
