How pass autoit variant to a COM method

[mLipok]

I thought about documentation in PDF or something similar.

As far I was able to find only this:

http://forums.zeiss.com/microscopy/community/showthread.php?t=921

http://forums.zeiss.com/microscopy/community/showthread.php?t=1623

 

[aiter]

I have no idea, but perhaps this means something.  Just trying my luck here.

[jugador]

Search Dllcall and VARIANT but not find anything except this thread.

while trying to convert the c++ code without using ObjCreate from this link for fun
https://learn.microsoft.com/en-us/windows/win32/winhttp/iwinhttprequest-open

got stuck on this line

hr = pIWinHttpRequest->Open(bstrMethod, bstrUrl, varFalse);

as varFalse is declared as VARIANT

VariantInit(&varFalse);
V_VT(&varFalse)   = VT_BOOL;
V_BOOL(&varFalse) = VARIANT_FALSE;

by winhttp header file

HRESULT Open(
    [in] BSTR method,
    [in] BSTR url,
    [in, optional] VARIANT async);

so try 

Local Const $tagVARIANT = "word vt;word r1;word r2;word r3;ptr data; ptr"
Local $tVariant = DllStructCreate($tagVARIANT)
$tVariant.vt = 11
$tVariant.data = 0

hr = DllCallAddress(...............'ptr', DllStructGetPtr($tVariant))   ;~ crash
hr = DllCallAddress(...............'struct*', $tVariant)                ;~ crash

hr = DllCallAddress(...............'struct', $tVariant)                 ;~ tada

So for VARIANT we should use 'struct' and not 'ptr' or 'struct*' in Autoit.