public unsafe void ITypeInfo_GetVarDesc_Invoke_Success()
{
using var image = new Bitmap(16, 32);
IPictureDisp picture = SubAxHost.GetIPictureDispFromPicture(image);
IDispatch dispatch = (IDispatch)picture;
ITypeInfo typeInfo;
HRESULT hr = dispatch.GetTypeInfo(0, Kernel32.GetThreadLocale(), out typeInfo);
Assert.Equal(HRESULT.S_OK, hr);
VARDESC *pVarDesc = null;
try
{
hr = typeInfo.GetVarDesc(3, &pVarDesc);
Assert.Equal(HRESULT.S_OK, hr);
Assert.Equal((DispatchID)4, pVarDesc->memid);
Assert.Equal(IntPtr.Zero, pVarDesc->lpstrSchema);
Assert.Equal(IntPtr.Zero, pVarDesc->unionMember);
Assert.Equal(VARENUM.USERDEFINED, pVarDesc->elemdescVar.tdesc.vt);
Assert.NotEqual(IntPtr.Zero, pVarDesc->elemdescVar.tdesc.union.lpadesc);
Assert.Equal(IntPtr.Zero, pVarDesc->elemdescVar.paramdesc.pparamdescex);
Assert.Equal(PARAMFLAG.NONE, pVarDesc->elemdescVar.paramdesc.wParamFlags);
Assert.Equal(VARFLAGS.FREADONLY, pVarDesc->wVarFlags);
Assert.Equal(VARKIND.DISPATCH, pVarDesc->varkind);
}
finally
{
typeInfo.ReleaseVarDesc(pVarDesc);
}
}
private ParameterDesc CreateFieldDesc(uint index)
{
if (typeInfo == null)
{
throw new ObjectDisposedException(Name);
}
VARDESC *vardesc = null;
char ** stringArray = stackalloc char *[1024];
uint numArgumentNames = 0;
try
{
typeInfo.GetVarDesc(index, out vardesc);
typeInfo.GetNames(vardesc->memid, stringArray, 1024, out numArgumentNames);
object value = null;
bool hasValue = false;
switch (vardesc->varkind)
{
case VARKIND.VAR_CONST:
IntPtr valueAddress = new IntPtr(vardesc->__union1.lpvarValue);
if (valueAddress == null)
{
throw new Exception("Value address is null");
}
value = Marshal.GetObjectForNativeVariant(valueAddress);
hasValue = true;
break;
case VARKIND.VAR_PERINSTANCE:
//offset = (int)vardesc->__union1.oInst;
break;
default:
throw new Exception("Variable kind " + vardesc->varkind + " is not supported");
}
return(new ParameterDesc(vardesc->elemdescVar, new string(stringArray[0]), GetReferencedType, (VARFLAGS)vardesc->wVarFlags, hasValue, value));
}
finally
{
if (vardesc != null)
{
typeInfo.ReleaseVarDesc(vardesc);
}
for (int j = 0; j < numArgumentNames; j++)
{
NativeMethods.SysFreeString(stringArray[j]);
}
}
}
public void ReleaseVarDesc(VARDESC *pVarDesc)
{
((delegate * unmanaged <ITypeInfo *, VARDESC *, void>)(lpVtbl[21]))((ITypeInfo *)Unsafe.AsPointer(ref this), pVarDesc);
}
public int AddVarDesc([NativeTypeName("UINT")] uint index, [NativeTypeName("VARDESC *")] VARDESC *pVarDesc)
{
return(((delegate * stdcall <ICreateTypeInfo2 *, uint, VARDESC *, int>)(lpVtbl[14]))((ICreateTypeInfo2 *)Unsafe.AsPointer(ref this), index, pVarDesc));
}
public HRESULT AddVarDesc(uint index, VARDESC *pVarDesc)
{
return(((delegate * unmanaged <ICreateTypeInfo *, uint, VARDESC *, int>)(lpVtbl[14]))((ICreateTypeInfo *)Unsafe.AsPointer(ref this), index, pVarDesc));
}
public void ReleaseVarDesc([NativeTypeName("VARDESC *")] VARDESC *pVarDesc)
{
((delegate * stdcall <ITypeInfo *, VARDESC *, void>)(lpVtbl[21]))((ITypeInfo *)Unsafe.AsPointer(ref this), pVarDesc);
}