public void GetElementNames(System.Runtime.InteropServices.ComTypes.INVOKEKIND kind, Action <String, Int32> add)
{
try {
for (int i = 0; i < this.TypeAttr.cFuncs; i++)
{
IntPtr pFuncDesc = IntPtr.Zero;
System.Runtime.InteropServices.ComTypes.FUNCDESC funcDesc;
string strName, strDocString, strHelpFile;
int dwHelpContext;
_typeInfo.GetFuncDesc(i, out pFuncDesc);
funcDesc = (System.Runtime.InteropServices.ComTypes.FUNCDESC)
Marshal.PtrToStructure(pFuncDesc, typeof(System.Runtime.InteropServices.ComTypes.FUNCDESC));
if (funcDesc.invkind == kind)
{
_typeInfo.GetDocumentation(funcDesc.memid, out strName, out strDocString, out dwHelpContext, out strHelpFile);
add(strName, funcDesc.cParams);
}
}
}
catch (System.Exception ex) {
throw ex;
}
}
internal static COM.FUNCDESC GetFuncDesc(COM.ITypeInfo typeinfo, int index)
{
IntPtr pFuncDesc;
typeinfo.GetFuncDesc(index, out pFuncDesc);
COM.FUNCDESC funcdesc = Marshal.PtrToStructure <COM.FUNCDESC>(pFuncDesc);
typeinfo.ReleaseFuncDesc(pFuncDesc);
return(funcdesc);
}
private static IEnumerable <ComTypes.FUNCDESC> GetFuncDescs(ComTypes.ITypeInfo typeInfo, ComTypes.TYPEATTR typeAttr)
{
for (var iFunc = 0; iFunc < typeAttr.cFuncs; iFunc++)
{
IntPtr pFuncDesc;
typeInfo.GetFuncDesc(iFunc, out pFuncDesc);
var funcDesc = (ComTypes.FUNCDESC)Marshal.PtrToStructure(pFuncDesc, typeof(ComTypes.FUNCDESC));
yield return(funcDesc);
typeInfo.ReleaseFuncDesc(pFuncDesc);
}
}
private static void GetFuncDescForDescIndex(ComTypes.ITypeInfo typeInfo, int funcIndex, out ComTypes.FUNCDESC funcDesc, out IntPtr funcDescHandle)
{
IntPtr pFuncDesc = IntPtr.Zero;
typeInfo.GetFuncDesc(funcIndex, out pFuncDesc);
// GetFuncDesc should never return null, this is just to be safe
if (pFuncDesc == IntPtr.Zero)
{
throw Error.CannotRetrieveTypeInformation();
}
funcDesc = (ComTypes.FUNCDESC)Marshal.PtrToStructure(pFuncDesc, typeof(ComTypes.FUNCDESC));
funcDescHandle = pFuncDesc;
}
/// <summary>
/// Converts a MethodBase[] into a MethodInformation[]
/// </summary>
/// <returns>the ComMethodInformation[] corresponding to methods</returns>
internal static ComMethodInformation[] GetMethodInformationArray(COM.ITypeInfo typeInfo, Collection <int> methods, bool skipLastParameters)
{
int methodCount = methods.Count;
int count = 0;
ComMethodInformation[] returnValue = new ComMethodInformation[methodCount];
foreach (int index in methods)
{
IntPtr pFuncDesc;
typeInfo.GetFuncDesc(index, out pFuncDesc);
COM.FUNCDESC funcdesc = ClrFacade.PtrToStructure <COM.FUNCDESC>(pFuncDesc);
returnValue[count++] = ComUtil.GetMethodInformation(funcdesc, skipLastParameters);
typeInfo.ReleaseFuncDesc(pFuncDesc);
}
return(returnValue);
}
internal string GetDefinition()
{
IntPtr pFuncDesc = IntPtr.Zero;
try
{
_typeInfo.GetFuncDesc(GetFuncDescIndex(), out pFuncDesc);
COM.FUNCDESC funcdesc = Marshal.PtrToStructure <COM.FUNCDESC>(pFuncDesc);
return(ComUtil.GetMethodSignatureFromFuncDesc(_typeInfo, funcdesc, !IsGettable));
}
finally
{
if (pFuncDesc != IntPtr.Zero)
{
_typeInfo.ReleaseFuncDesc(pFuncDesc);
}
}
}
/// <summary>
/// Returns the different method overloads signatures.
/// </summary>
/// <returns></returns>
internal Collection <string> MethodDefinitions()
{
Collection <string> result = new Collection <string>();
foreach (int index in _methods)
{
IntPtr pFuncDesc;
_typeInfo.GetFuncDesc(index, out pFuncDesc);
COM.FUNCDESC funcdesc = Marshal.PtrToStructure <COM.FUNCDESC>(pFuncDesc);
string signature = ComUtil.GetMethodSignatureFromFuncDesc(_typeInfo, funcdesc, false);
result.Add(signature);
_typeInfo.ReleaseFuncDesc(pFuncDesc);
}
return(result);
}
/// <summary>
/// Creates an entity support list for a proxy
/// </summary>
/// <param name="factory">core to perform searching</param>
/// <param name="comProxy">proxy to analyze</param>
/// <returns>supported methods and properties as name/kind dictionary</returns>
/// <exception cref="COMException">Throws generaly if any exception occurs. See inner exception(s) for details</exception>
internal Dictionary <string, string> GetSupportedEntities(Core factory, object comProxy)
{
try
{
Guid parentLibraryGuid = CoreFactoryExtensions.GetParentLibraryGuid(factory, comProxy);
if (Guid.Empty == parentLibraryGuid)
{
return(null);
}
string className = TypeDescriptor.GetClassName(comProxy);
string key = (parentLibraryGuid.ToString() + className).ToLower();
Dictionary <string, string> supportList = null;
if (factory.EntitiesListCache.TryGetValue(key, out supportList))
{
return(supportList);
}
supportList = new Dictionary <string, string>();
IDispatch dispatch = comProxy as IDispatch;
if (null == dispatch)
{
throw new COMException("Unable to cast underlying proxy to IDispatch.");
}
COMTypes.ITypeInfo typeInfo = dispatch.GetTypeInfo(0, 0);
if (null == typeInfo)
{
throw new COMException("GetTypeInfo returns null.");
}
IntPtr typeAttrPointer = IntPtr.Zero;
typeInfo.GetTypeAttr(out typeAttrPointer);
COMTypes.TYPEATTR typeAttr = (COMTypes.TYPEATTR)Marshal.PtrToStructure(typeAttrPointer, typeof(COMTypes.TYPEATTR));
for (int i = 0; i < typeAttr.cFuncs; i++)
{
string strName, strDocString, strHelpFile;
int dwHelpContext;
IntPtr funcDescPointer = IntPtr.Zero;
COMTypes.FUNCDESC funcDesc;
typeInfo.GetFuncDesc(i, out funcDescPointer);
funcDesc = (COMTypes.FUNCDESC)Marshal.PtrToStructure(funcDescPointer, typeof(COMTypes.FUNCDESC));
switch (funcDesc.invkind)
{
case COMTypes.INVOKEKIND.INVOKE_PROPERTYGET:
case COMTypes.INVOKEKIND.INVOKE_PROPERTYPUT:
case COMTypes.INVOKEKIND.INVOKE_PROPERTYPUTREF:
{
typeInfo.GetDocumentation(funcDesc.memid, out strName, out strDocString, out dwHelpContext, out strHelpFile);
string outValue = "";
bool exists = supportList.TryGetValue("Property-" + strName, out outValue);
if (!exists)
{
supportList.Add("Property-" + strName, strDocString);
}
break;
}
case COMTypes.INVOKEKIND.INVOKE_FUNC:
{
typeInfo.GetDocumentation(funcDesc.memid, out strName, out strDocString, out dwHelpContext, out strHelpFile);
string outValue = "";
bool exists = supportList.TryGetValue("Method-" + strName, out outValue);
if (!exists)
{
supportList.Add("Method-" + strName, strDocString);
}
break;
}
}
typeInfo.ReleaseFuncDesc(funcDescPointer);
}
typeInfo.ReleaseTypeAttr(typeAttrPointer);
Marshal.ReleaseComObject(typeInfo);
factory.EntitiesListCache.Add(key, supportList);
return(supportList);
}
catch (Exception exception)
{
throw new COMException("An unexpected error occurs.", exception);
}
}
