internal ComMethodDesc(ITypeInfo typeInfo, FUNCDESC funcDesc)
: this(funcDesc.memid)
{
InvokeKind = funcDesc.invkind;
int cNames;
string[] rgNames = new string[1 + funcDesc.cParams];
typeInfo.GetNames(DispId, rgNames, rgNames.Length, out cNames);
bool skipLast = false;
if (IsPropertyPut && rgNames[rgNames.Length - 1] == null)
{
rgNames[rgNames.Length - 1] = "value";
cNames++;
skipLast = true;
}
Debug.Assert(cNames == rgNames.Length);
_name = rgNames[0];
ParamCount = funcDesc.cParams;
ReturnType = ComUtil.GetTypeFromTypeDesc(funcDesc.elemdescFunc.tdesc);
ParameterInformation = ComUtil.GetParameterInformation(funcDesc, skipLast);
}
protected void AddParams(FUNCDESC funcDesc,
String[] names,
int paramCount)
{
IntPtr elemPtr = funcDesc.lprgelemdescParam;
for (int i = 0; i < paramCount; i++)
{
ELEMDESC elemDesc =
(ELEMDESC)Marshal.PtrToStructure(elemPtr,
typeof(ELEMDESC));
ComParamInfo pi = new ComParamInfo
(names[i + 1],
TypeLibUtil.TYPEDESCToString
(_typeLib,
_typeInfo,
elemDesc.tdesc,
TypeLibUtil.COMTYPE),
elemDesc.desc.paramdesc.wParamFlags);
_parameters.Add(pi);
// Point to the next one
elemPtr = new IntPtr(elemPtr.ToInt64() +
Marshal.SizeOf(elemDesc));
}
}
internal ComMethodDesc(ITypeInfo typeInfo, FUNCDESC funcDesc)
: this(funcDesc.memid)
{
_hasTypeInfo = true;
InvokeKind = funcDesc.invkind;
int cNames;
string[] rgNames = new string[1 + funcDesc.cParams];
typeInfo.GetNames(_memid, rgNames, rgNames.Length, out cNames);
if (IsPropertyPut && rgNames[rgNames.Length - 1] == null)
{
rgNames[rgNames.Length - 1] = "value";
cNames++;
}
Debug.Assert(cNames == rgNames.Length);
_name = rgNames[0];
_parameters = new ComParamDesc[funcDesc.cParams];
int offset = 0;
for (int i = 0; i < funcDesc.cParams; i++)
{
ELEMDESC elemDesc = (ELEMDESC)Marshal.PtrToStructure(
new IntPtr(funcDesc.lprgelemdescParam.ToInt64() + offset),
typeof(ELEMDESC));
_parameters[i] = new ComParamDesc(ref elemDesc, rgNames[1 + i]);
offset += Marshal.SizeOf(typeof(ELEMDESC));
}
}
public void GetFuncDesc(int index, out IntPtr ppFuncDesc)
{
// Fail BEFORE allocating the handle to avoid leaks. If the real COM object fails in this method
// and doesn't return the handle or clean it up itself there's not much we can do to avoid the leak.
_faultInjector.FailurePointThrow(MockTypeLibrariesFailurePoints.ITypeInfo_GetFuncDesc);
ppFuncDesc = _memoryHelper.AllocateHandle(Marshal.SizeOf <FUNCDESC>());
_memoryHelper.EnterSubAllocationScope(ppFuncDesc);
FUNCDESC funcDesc = new FUNCDESC();
funcDesc.lprgelemdescParam = _memoryHelper.AllocateHandle(_definedFunctions[index].parameters.Length * Marshal.SizeOf <ELEMDESC>());
funcDesc.cParams = (short)_definedFunctions[index].parameters.Length;
for (int i = 0; i < _definedFunctions[index].parameters.Length; i++)
{
ELEMDESC elemDesc = new ELEMDESC();
elemDesc.tdesc = _definedFunctions[index].parameters[i].CreateTypeDesc(
new IntPtr(index * s_HREF_FUNCSPARAM_OFFSET_PERFUNC + i + s_HREF_FUNCSPARAM_OFFSET), _memoryHelper);
Marshal.StructureToPtr(
elemDesc,
new IntPtr(funcDesc.lprgelemdescParam.ToInt64() + i * Marshal.SizeOf <ELEMDESC>()),
false);
}
funcDesc.elemdescFunc.tdesc = _definedFunctions[index].returnType.CreateTypeDesc(
new IntPtr(index + s_HREF_FUNCSRET_OFFSET), _memoryHelper);
_memoryHelper.ExitSubAllocationScope();
Marshal.StructureToPtr(funcDesc, ppFuncDesc, false);
}
protected void AddDomParams(FUNCDESC funcDesc,
CodeMemberMethod meth,
int limit)
{
IntPtr elemPtr = funcDesc.lprgelemdescParam;
for (int i = 0; i < limit; i++)
{
ELEMDESC elemDesc =
(ELEMDESC)Marshal.PtrToStructure(elemPtr,
typeof(ELEMDESC));
ComParamInfo parameter = (ComParamInfo)
_parameters[i];
String paramType = TypeLibUtil.TYPEDESCToString
(_typeLib,
_typeInfo,
elemDesc.tdesc,
!TypeLibUtil.COMTYPE);
String paramInOut = null;
if ((parameter._paramFlags & PARAMFLAG.PARAMFLAG_FIN) != 0)
{
paramInOut = "In";
}
else if
((parameter._paramFlags & PARAMFLAG.PARAMFLAG_FOUT) != 0)
{
paramInOut = "Out";
// Ref becomes out for an output parameter
if (paramType.StartsWith("ref "))
{
paramType = "out " + paramType.Substring(4);
}
else
{
paramType = "out " + paramType;
}
}
CodeParameterDeclarationExpression paramExpr =
new CodeParameterDeclarationExpression
(paramType, parameter._name);
if (paramInOut != null)
{
paramExpr.CustomAttributes.Add
(new CodeAttributeDeclaration
("System.Runtime.InteropServices." + paramInOut));
}
meth.Parameters.Add(paramExpr);
// Point to the next one
elemPtr = new IntPtr(elemPtr.ToInt64() +
Marshal.SizeOf(elemDesc));
}
}
public unsafe MethodDesc(string name, string dll, string entryPoint, FUNCDESC funcdesc, string[] argumentNames, Func<uint, TypeDesc> typeFactory)
{
string tmpl = "___overloaded000";
if ((name.Length > tmpl.Length) && (name.IndexOf("___overloaded") == (name.Length - tmpl.Length)))
name = name.Substring(0, name.Length - tmpl.Length);
Name = EscapMethodName(name);
Dll = dll;
EntryPoint = entryPoint;
Offset = funcdesc.oVft;
ReturnValue = new ParameterDesc(funcdesc.elemdescFunc, string.Empty, typeFactory, 0, false, null);
List<ParameterDesc> parameters = new List<ParameterDesc>();
for (int i = 0; i < funcdesc.cParams; i++)
parameters.Add(new ParameterDesc(funcdesc.lprgelemdescParam[i], (i < argumentNames.Length) ? argumentNames[i] : "__arg" + i, typeFactory, 0, false, null));
Parameters = parameters.AsReadOnly();
//if (funcdesc.cParamsOpt != 0)
// throw new Exception("Variable number of optional parameters is not supported");
//if (funcdesc.invkind != INVOKEKIND.INVOKE_FUNC)
// throw new Exception("Only functions are currently supported");
if (funcdesc.cScodes >= 1)
throw new Exception("Only one return value is supported");
switch (funcdesc.callconv)
{
case System.Runtime.InteropServices.ComTypes.CALLCONV.CC_CDECL:
Convention = CallingConvention.Cdecl;
break;
case System.Runtime.InteropServices.ComTypes.CALLCONV.CC_STDCALL:
Convention = CallingConvention.StdCall;
break;
default:
throw new Exception("Calling convention " + funcdesc.callconv + " is not supported");
}
switch (funcdesc.funckind)
{
case FUNCKIND.FUNC_DISPATCH:
case FUNCKIND.FUNC_VIRTUAL:
case FUNCKIND.FUNC_PUREVIRTUAL:
case FUNCKIND.FUNC_NONVIRTUAL:
case FUNCKIND.FUNC_STATIC:
break;
default:
throw new Exception("Function kind " + funcdesc.funckind + " is not supported");
}
}
internal ComMethodDesc(ITypeInfo typeInfo, FUNCDESC funcDesc)
: this(funcDesc.memid)
{
_invokeKind = funcDesc.invkind;
string[] rgNames = new string[1 + funcDesc.cParams];
typeInfo.GetNames(DispId, rgNames, rgNames.Length, out int cNames);
if (IsPropertyPut && rgNames[rgNames.Length - 1] == null)
{
rgNames[rgNames.Length - 1] = "value";
cNames++;
}
Debug.Assert(cNames == rgNames.Length);
Name = rgNames[0];
ParamCount = funcDesc.cParams;
}
static void DealWithTypeInfo(UCOMITypeInfo it)
{
// Get the names from ITypeInfo
string name;
string docstring;
Int32 ctxt;
string helpfile;
// TypeInfo name
it.GetDocumentation(-1, out name, out docstring, out ctxt, out helpfile);
IntPtr pa;
it.GetTypeAttr(out pa);
TYPEATTR ta = (TYPEATTR)Marshal.PtrToStructure(pa, typeof(TYPEATTR));
DealWithName(name, ta.guid);
// Deal with funcs
for (int i = 0; i < ta.cFuncs; i++)
{
IntPtr pfd;
it.GetFuncDesc(i, out pfd);
FUNCDESC fd = (FUNCDESC)Marshal.PtrToStructure(pfd, typeof(FUNCDESC));
it.GetDocumentation(fd.memid, out name, out docstring, out ctxt, out helpfile);
DealWithName(name, Guid.Empty);
}
// Deal with vars
for (int i = 0; i < ta.cVars; i++)
{
IntPtr pvd;
it.GetVarDesc(i, out pvd);
VARDESC vd = (VARDESC)Marshal.PtrToStructure(pvd, typeof(VARDESC));
it.GetDocumentation(vd.memid, out name, out docstring, out ctxt, out helpfile);
DealWithName(name, Guid.Empty);
}
}
internal ComMemberInfo(BasicInfo parent,
TYPEKIND typeKind,
UCOMITypeInfo typeInfo,
int index,
bool dispatch,
FUNCDESC funcDesc) :
base(typeInfo)
{
int actLen;
String[] memberNames = new String[100];
_typeInfo.GetNames(funcDesc.memid, memberNames,
memberNames.Length,
out actLen);
_memberId = funcDesc.memid;
// the high order part of the memberId is flags
// for a dispatch interface
if (dispatch)
{
_memberId &= 0xffff;
// Make sure we get a 16 bit integer so that negative
// DISPIDs show up correctly
_memberId = (Int16)_memberId;
}
String docString;
// Note, use the original unmasked memberId
_typeInfo.GetDocumentation(funcDesc.memid, out _name,
out docString, out _helpContext,
out _helpFile);
// Set using property so that nulls are checked
DocString = docString;
_parameters = new ArrayList();
_typeLib = parent.TypeLib;
_index = index;
_container = parent;
_printName = _name;
_nameKey = (String)_name;
// Add the DISPID to the dispatch interfaces
if (dispatch)
{
_dispatch = true;
_printName += " - " + _memberId;
}
if (TraceUtil.If(this, TraceLevel.Verbose))
{
Trace.WriteLine("MemberInfo: " + _name);
}
_type = TypeLibUtil.TYPEDESCToString
(_typeLib,
_typeInfo,
funcDesc.elemdescFunc.tdesc,
TypeLibUtil.COMTYPE);
if (funcDesc.invkind == INVOKEKIND.INVOKE_FUNC)
{
_infoType = "Function";
_property = false;
if (funcDesc.cParams > 0)
{
AddParams(funcDesc, memberNames, funcDesc.cParams);
}
}
else
{
if (funcDesc.invkind == INVOKEKIND.INVOKE_PROPERTYGET)
{
_printName += " (get)";
_nameKey += NAMEKEY_GET;
}
else if (funcDesc.invkind == INVOKEKIND.INVOKE_PROPERTYPUT)
{
_printName += " (put)";
_nameKey += NAMEKEY_SET;
}
else if (funcDesc.invkind == INVOKEKIND.INVOKE_PROPERTYPUTREF)
{
_printName += " (put ref)";
_nameKey += NAMEKEY_SETREF;
}
_infoType = "Property";
_property = true;
}
_flagsString = FlagsString((FUNCFLAGS)funcDesc.wFuncFlags);
if (_property)
{
_presInfo = PresentationMap.
GetInfo(PresentationMap.COM_PROPERTY);
}
else
{
_presInfo = PresentationMap.
GetInfo(PresentationMap.COM_METHOD);
}
}
/// <summary>
/// Helper method for retrieving the function description structure for the given function index.
/// This method needs to also return the native pointer to be released when we're done with our FUNCDESC.
/// It's not really possible to copy everything to a managed struct and then release the ptr immediately
/// here, since FUNCDESCs contain other native pointers we may need to access.
/// </summary>
internal static void GetFuncDescForDescIndex(ITypeInfo typeInfo, int funcIndex, out FUNCDESC funcDesc, out IntPtr funcDescHandle)
{
typeInfo.GetFuncDesc(funcIndex, out IntPtr pFuncDesc);
// GetFuncDesc should never return null, this is just to be safe
if (pFuncDesc == IntPtr.Zero)
{
throw new COMException(
ResourceUtilities.GetResourceString("ResolveComReference.CannotRetrieveTypeInformation"));
}
funcDesc = (FUNCDESC)Marshal.PtrToStructure(pFuncDesc, typeof(FUNCDESC));
funcDescHandle = pFuncDesc;
}
public FuncDesc(int index, ITypeInfo typeinfo)
{
m_typeinfo = typeinfo;
m_ipFuncDesc = TypeLibResourceManager.GetDaemon().GetFuncDesc(typeinfo, index);
m_funcdesc = (FUNCDESC)Marshal.PtrToStructure(m_ipFuncDesc, typeof(FUNCDESC));
}
/// <summary>
/// Determines whether the name belongs to a COM property on the given raw COM object.
/// </summary>
/// <remarks>
/// Looks up type information using the COM ITypeInfo interface.
/// Caches the result in the object's built-in COM data area so that subsequent queries for the same name are fast.
/// </remarks>
/// <param name="obj"></param>
/// <param name="memberName"></param>
/// <returns>false if no type information is available, or for any error condition.</returns>
///
internal static bool IsCOMProp(object obj, string memberName)
{
if (Utils.IsMono)
{
return(false);
}
// The memberName can be changed by the call to GetMemberDispID below (U to _ conversion), but we want
// to cache the isComProp value for the unmodified member name, so we save it.
string unmodifiedMemberName = memberName;
object cachedValue = Marshal.GetComObjectData(obj, "NETLinkIsCOMProp" + unmodifiedMemberName);
if (cachedValue != null)
{
return((bool)cachedValue);
}
else
{
UCOMIDispatch iDisp;
UCOMITypeInfo iTypeInfo;
try {
iDisp = GetIDispatch(obj);
iTypeInfo = GetITypeInfo(obj, iDisp);
} catch (Exception) {
Marshal.SetComObjectData(obj, "NETLinkIsCOMProp" + unmodifiedMemberName, false);
return(false);
}
// GetMemberDispID() does not throw on failure--it returns -1.
int memberDispId = GetMemberDispID(obj, iDisp, ref memberName);
if (memberDispId == -1)
{
Marshal.SetComObjectData(obj, "NETLinkIsCOMProp" + unmodifiedMemberName, false);
return(false);
}
// We have successfully passed GetIDsOfNames() and GetITypeInfo(), so we know that type info is available and that
// the name is a member of the dispatch interface. The name may also have been modified to reflect U to _ conversion.
// Previous versions of this method acquired an ITypeInfo2 from the ITypeInfo and called GetFuncIndexOfMemId() to get
// a function index suitable for GetFuncDesc(). There were problems with that technique, in that the index returned
// sometimes (not always) needed to have 7 added to it. Because we cache the T/F result from this method anyway,
// we now just exhaustively call GetFuncDesc() on all the members, looking for one with the right memberDispId.
// Then we can check its func info to see if it is a property with no args.
bool result = false;
IntPtr pTypeAttr;
iTypeInfo.GetTypeAttr(out pTypeAttr);
TYPEATTR typeAttr = (TYPEATTR)Marshal.PtrToStructure(pTypeAttr, typeof(TYPEATTR));
int numFuncs = typeAttr.cFuncs;
iTypeInfo.ReleaseTypeAttr(pTypeAttr);
for (int i = 0; i < numFuncs; i++)
{
IntPtr pFuncDesc;
iTypeInfo.GetFuncDesc(i, out pFuncDesc);
FUNCDESC funcDesc = (FUNCDESC)Marshal.PtrToStructure(pFuncDesc, typeof(FUNCDESC));
int thisMemberID = funcDesc.memid;
INVOKEKIND invokeKind = funcDesc.invkind;
int numParams = funcDesc.cParams;
iTypeInfo.ReleaseFuncDesc(pFuncDesc);
if (thisMemberID == memberDispId)
{
result = invokeKind == INVOKEKIND.INVOKE_PROPERTYGET && numParams == 0;
break;
}
}
Marshal.SetComObjectData(obj, "NETLinkIsCOMProp" + unmodifiedMemberName, result);
return(result);
}
}
/// <summary>
/// Gets parameter information for the given member.
/// </summary>
/// <remarks>
/// Uses the COM ITypeInfo interface to get the information. Does not throw. If it returns false then the out params
/// will not hold useful information.
/// </remarks>
/// <param name="obj"></param>
/// <param name="memberName"></param>
/// <param name="callType"></param>
/// <param name="isBeingCalledWithZeroArgs"></param>
/// <param name="paramTypes"></param>
/// <param name="paramFlags"></param>
/// <param name="endsWithParamArray"></param>
/// <returns>true if the name refers to a valid member or if no type information is available</returns>
///
internal static bool GetMemberInfo(object obj, ref string memberName, int callType, bool isBeingCalledWithZeroArgs,
out Type[] paramTypes, out PARAMFLAG[] paramFlags, out bool endsWithParamArray)
{
// There are some early returns in this method, so we initialize the out params right away. To the caller, if these values
// come back null it means that the information could not be determined.
paramTypes = null;
paramFlags = null;
endsWithParamArray = false;
int defaultLCID = GetUserDefaultLCID();
try {
// Throws in this outer try cause true to be returned. They mean "type info could not be obtained, so the member is not
// known to be invalid."
UCOMIDispatch iDisp = GetIDispatch(obj);
int memberDispId = GetMemberDispID(obj, iDisp, ref memberName);
if (memberDispId == -1)
{
// Name not found by GetIDsOfNames.
return(false);
}
// If no args are being passed, then we can skip all the machinations below about type info.
if (isBeingCalledWithZeroArgs)
{
return(true);
}
UCOMITypeInfo iTypeInfo = GetITypeInfo(obj, iDisp);
IntPtr pFuncDesc;
// Check to see if the func index for this member name is already cached from a previous call.
FuncIndexHolder fih = (FuncIndexHolder)Marshal.GetComObjectData(obj, "NETLinkFuncIndex" + memberName);
if (fih == null)
{
// This will be populated below.
fih = new FuncIndexHolder();
Marshal.SetComObjectData(obj, "NETLinkFuncIndex" + memberName, fih);
}
int funcIndex = -1;
if (callType == Install.CALLTYPE_FIELD_OR_SIMPLE_PROP_GET)
{
if (fih.funcIndexForCALLTYPE_FIELD_OR_SIMPLE_PROP_GET != -1)
{
funcIndex = fih.funcIndexForCALLTYPE_FIELD_OR_SIMPLE_PROP_GET;
}
}
else if (callType == Install.CALLTYPE_FIELD_OR_SIMPLE_PROP_SET || callType == Install.CALLTYPE_PARAM_PROP_SET)
{
if (fih.funcIndexForCALLTYPE_FIELD_OR_ANY_PROP_SET != -1)
{
funcIndex = fih.funcIndexForCALLTYPE_FIELD_OR_ANY_PROP_SET;
}
}
else if (callType == Install.CALLTYPE_METHOD || callType == Install.CALLTYPE_PARAM_PROP_GET)
{
// COM objects are treated by M code as if they all have indexers, so calls like obj[1] will
// come in as CALLTYPE_PARAM_PROP_GET with a property name of Item. We can just treat these like
// method calls.
if (fih.funcIndexForCALLTYPE_METHOD != -1)
{
funcIndex = fih.funcIndexForCALLTYPE_METHOD;
}
}
// Did not have the func index for this call type cached.
if (funcIndex == -1)
{
IntPtr pTypeAttr;
iTypeInfo.GetTypeAttr(out pTypeAttr);
TYPEATTR typeAttr = (TYPEATTR)Marshal.PtrToStructure(pTypeAttr, typeof(TYPEATTR));
int numFuncs = typeAttr.cFuncs;
iTypeInfo.ReleaseTypeAttr(pTypeAttr);
bool foundDispId = false;
for (int thisIndex = 0; thisIndex < numFuncs; thisIndex++)
{
// Be aware that GetFuncDesc() can (I think) throw a cryptic "Element not found" exception,
// such as for a hidden property like (Excel) _Application.ActiveDialog.
iTypeInfo.GetFuncDesc(thisIndex, out pFuncDesc);
FUNCDESC funcDesc = (FUNCDESC)Marshal.PtrToStructure(pFuncDesc, typeof(FUNCDESC));
int thisMemberId = funcDesc.memid;
INVOKEKIND invokeKind = funcDesc.invkind;
iTypeInfo.ReleaseFuncDesc(pFuncDesc);
if (thisMemberId == memberDispId)
{
foundDispId = true;
// Verify that it is a member of the correct call type.
if (callType == Install.CALLTYPE_FIELD_OR_SIMPLE_PROP_GET && invokeKind == INVOKEKIND.INVOKE_PROPERTYGET)
{
fih.funcIndexForCALLTYPE_FIELD_OR_SIMPLE_PROP_GET = thisIndex;
funcIndex = thisIndex;
break;
}
else if ((callType == Install.CALLTYPE_FIELD_OR_SIMPLE_PROP_SET || callType == Install.CALLTYPE_PARAM_PROP_SET) &&
(invokeKind == INVOKEKIND.INVOKE_PROPERTYPUT || invokeKind == INVOKEKIND.INVOKE_PROPERTYPUTREF))
{
fih.funcIndexForCALLTYPE_FIELD_OR_ANY_PROP_SET = thisIndex;
funcIndex = thisIndex;
break;
}
else if ((callType == Install.CALLTYPE_METHOD && (invokeKind == INVOKEKIND.INVOKE_FUNC || invokeKind == INVOKEKIND.INVOKE_PROPERTYGET)) ||
(callType == Install.CALLTYPE_PARAM_PROP_GET && invokeKind == INVOKEKIND.INVOKE_PROPERTYGET))
{
// Parameterized prop gets, not sets, look like CALLTYPE_METHOD. Also, as discussed in an earlier comment,
// indexer notation calls (obj[1]) are supported for all COM objects and come in as CALLTYPE_PARAM_PROP_GET.
fih.funcIndexForCALLTYPE_METHOD = thisIndex;
funcIndex = thisIndex;
break;
}
}
}
if (funcIndex == -1)
{
// We didn't find the member in our search. This can happen in two ways. First, the member might
// exist but not be the right call type. For this case we want to return false. Second, we didn't
// even find the dispid. This can happen in unusual cases I don't understan An example of this
// is the IWebBrowser2 interface obtained by CreateCOMObject["InternetExplorer.Application"].
// For this case we want to return true, as if there was no type info at all available, so the
// call can still proceed.
return(!foundDispId);
}
}
// If we get to here, we have a valid funcIndex and memberDispId, and the member is of the correct variety
// that corresponds to how it was called (e.g., it's a method and it was called as such). All that
// remains is to get the parameter types.
iTypeInfo.GetFuncDesc(funcIndex, out pFuncDesc);
try {
FUNCDESC funcDesc = (FUNCDESC)Marshal.PtrToStructure(pFuncDesc, typeof(FUNCDESC));
Debug.Assert(funcDesc.memid == memberDispId);
int paramCount = funcDesc.cParams;
// Functions that end with a VB-style ParamArray (a variable-length argument sequence) have -1 for the
// cParamsOpt member. It is convenient to treat them specially, hence the 'endsWithParamArray' variable
// (which is an out param for this method). The special treatment involves leaving the ParamArray arg off
// the list of paramFlags and paramTypes. We just pretend there is one less arg to the function but
// record that it ends with a ParamArray. We always know the type of this arg anyway: ByRef Variant[].
// To the caller, though, the individual args are sent as a sequence, not packed into an array.
endsWithParamArray = funcDesc.cParamsOpt == -1;
if (endsWithParamArray)
{
paramCount--;
}
paramTypes = new Type[paramCount];
paramFlags = new PARAMFLAG[paramCount];
IntPtr pElemDescArray = funcDesc.lprgelemdescParam;
for (int paramIndex = 0; paramIndex < paramCount; paramIndex++)
{
ELEMDESC elemDesc = (ELEMDESC)Marshal.PtrToStructure((IntPtr)(pElemDescArray.ToInt64() +
paramIndex * Marshal.SizeOf(typeof(ELEMDESC))), typeof(ELEMDESC));
TYPEDESC typeDesc = elemDesc.tdesc;
paramFlags[paramIndex] = elemDesc.desc.paramdesc.wParamFlags;
// I think I should never see a retval param here. They have been automatically converted to return types.
Debug.Assert((paramFlags[paramIndex] & PARAMFLAG.PARAMFLAG_FRETVAL) == 0);
VarEnum variantType = (VarEnum)typeDesc.vt;
bool isArray = variantType == VarEnum.VT_SAFEARRAY;
bool isPtr = variantType == VarEnum.VT_PTR;
bool isOut = (paramFlags[paramIndex] & PARAMFLAG.PARAMFLAG_FOUT) != 0;
// VB array params will have isPtr and !isArray, because they are always ByRef (thus ptrs).
// In general (always?), out params will be VT_PTR.
if (isArray || isPtr)
{
IntPtr pElementTypeDesc = typeDesc.lpValue;
TYPEDESC elementTypeDesc = (TYPEDESC)Marshal.PtrToStructure(pElementTypeDesc, typeof(TYPEDESC));
variantType = (VarEnum)elementTypeDesc.vt;
// If the arg was a ptr to an array (e.g., as in VB objects), do it again to get the element type.
if (variantType == VarEnum.VT_SAFEARRAY)
{
isArray = true;
pElementTypeDesc = elementTypeDesc.lpValue;
elementTypeDesc = (TYPEDESC)Marshal.PtrToStructure(pElementTypeDesc, typeof(TYPEDESC));
variantType = (VarEnum)elementTypeDesc.vt;
}
}
paramTypes[paramIndex] = managedTypeForVariantType(variantType, isArray, isPtr, isOut);
}
} finally {
iTypeInfo.ReleaseFuncDesc(pFuncDesc);
}
return(true);
} catch (Exception) {
return(true);
}
}
public unsafe int RemoteGetFuncDesc(uint index, FUNCDESC** ppFuncDesc, CLEANLOCALSTORAGE* pDummy)
{
ITypeInfo_vtbl** @this = (ITypeInfo_vtbl**)reference;
ITypeInfo_vtbl* vtbl = *@this;
if (vtbl == null)
throw new InvalidComObjectException();
Delegate genericDelegate = Marshal.GetDelegateForFunctionPointer(vtbl->method_5, typeof(delegate_5));
delegate_5 method = (delegate_5)genericDelegate;
return method(@this, index, ppFuncDesc, pDummy);
}
public unsafe int RemoteBind(char* szName, uint lHashVal, ushort wFlags, ITypeInfo* ppTInfo, DESCKIND* pDescKind, FUNCDESC** ppFuncDesc, VARDESC** ppVarDesc, ITypeComp* ppTypeComp, CLEANLOCALSTORAGE* pDummy)
{
ITypeComp_vtbl** @this = (ITypeComp_vtbl**)reference;
ITypeComp_vtbl* vtbl = *@this;
if (vtbl == null)
throw new InvalidComObjectException();
Delegate genericDelegate = Marshal.GetDelegateForFunctionPointer(vtbl->method_3, typeof(delegate_3));
delegate_3 method = (delegate_3)genericDelegate;
return method(@this, szName, lHashVal, wFlags, ppTInfo, pDescKind, ppFuncDesc, ppVarDesc, ppTypeComp, pDummy);
}
