So far I've figured out how to pass Unicode strings, bSTRs, to and from a Euphoria DLL using a Typelib. What I can't figure out, thus far, is how to create and pass back an array of BSTRs. The code I have thus far (along with includes for EuCOM itself and parts of Win32lib): global function REALARR() sequence seq atom psa atom va...
Hi guys, This most likely has a very simple answer, but I can't figure it out. I'm trying to refactor some code that looks like this: SAFEARRAY* psa; long* count; HRESULT hr = pSomeInterface->ListSomething(&psa, &count); if (SUCCEEDED(hr)) { CComSafeArray<BSTR> sa; if (*count > 0) { sa.Attach(psa); } } // perf...
Hi, how can one use a Safearray to pass an array of custom types (a class containing only properties) from C++ to C#? Is using the VT_RECORD type the right way to do it? I am trying in the following way, but SafeArrayPutElement returns an error when trying to fill the safearray the reference to the array of classes gets to the managed ...
We have a COM component who’s implementation and interface definition exist in managed code but is driven by a native component. The managed component is returning a SafeArray back to the native code via the following method declaration. interface IExample { <return: MarshalAs(UnmanagedType.SafeArray, SafeArraySubType=VarEnum.VT_UNKN...
I have a .NET assembly. It happens to be written in C++/CLI. I am exposing a few objects via COM. Everything is working fine, but I cannot for the life of me figure out how to return an array of my own objects from a method. Every time I do, I get a type mismatch error at runtime. I can return an array of ints or strings just fine. ...
I have a COM function that should return a SafeArray via a LPSAFEARRAY* out parameter. The function creates the SafeArray using ATL's CComSafeArray template class. My naive implementation uses CComSafeArray<T>::Detach() in order to move ownership from the local variable to the output parameter: void foo(LPSAFEARRAY* psa) { CComSafeA...
I'm trying to use a COM component with the following method: HRESULT _stdcall Run( [in] SAFEARRAY(BSTR) paramNames, [in] SAFEARRAY(VARIANT *) paramValues ); How can I create in C/C++ the paramValues array? ...
Hello! There is the function GetLinksFromPage. She have created a links array, then I wanna pass that array to COM-object (only URLs), thus I have to convert CAtlArray< CComPtr< IDispatch> > to CComSafeArray< BSTR>. How I can do it ? HRESULT myclass::GetLinksFromPage( const CComPtr<IHTMLDocument2>& pDoc, CAtlArray<CComPtr<IDispatch> > &...
I have the following code in C++ which I need to be able to call from C#: struct Inner { double data1; double data2; }; struct Outer { double data3; SAFEARRAY innerData; }; int WINAPI ProcessData (Outer& outer ) { ... } I tried the following but it did not work What am I doing wrong? [StructLayoutAttribute(LayoutKind.Sequent...
Hi there, I need to read a textfile and store the data into a Safearray. I tried it with this function: bool Parse::LoadTxtFileIntoSafearray(string* strPath, SAFEARRAY** pByteArray) { bool bReturn = false; string line; int iOffset = 0; char* pcBuffer = NULL; std::ifstream infile ( strPath->data() ); if ( !infile.fail() ) { infil...
I also used VT_RECORD. But didn't got success in passing safearray of UDTs. [ComVisible(true)] [StructLayout(LayoutKind.Sequential)] public class MY_CLASS { [MarshalAs(UnmanagedType.U4)] public Int32 width; [MarshalAs(UnmanagedType.U4)] public Int32 height; ...
Hi, I have an ATL COM object that I am using from C#. The interface currently looks like: interface ICHASCom : IDispatch{ [id(1), helpstring("method Start")] HRESULT Start([in] BSTR name, [out,retval] VARIANT_BOOL* result); ... [id(4), helpstring("method GetCount")] HRESULT GetCount([out,retval] LONG* numPorts); ... [id(7)...
Hello. I have an .NET (4.0) interface which is implemented with a ServicedComponent COM+ class: interface DotNetIface { void MethodRef(var System.Guid guid); void MethodArray(System.Guid[] guids, params object[] parameters); void MethodCStyle([MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.Struct, SizeConst=5)]S...
I have a COM object that takes a 0 bounded safearray of two dimensions. I need to pass this array into my C++ COM object. I can pass the VB6 multidim arrays into the C++ side without a problem, but I have no idea how to set this up in C# so that it will be marshalled correctly. Does anyone know the steps to set up a mulitidimensional arr...
Am relatively new to the world of C++. I wish to access the data from a multi-dimensional SAFEARRAY. However when I try to retrieve the value, I get the error 0xC0000005: Access violation reading location 0x40e3e300. Attached below is my code and the marked line is where it errors out. Hopefully someone can shed some light as to how to a...
I am trying to pass an array of ints from C# to C++/CLI. Here's my code: // SafeArrayTesting_PlusPlus.cpp #include "stdafx.h" #include <comdef.h> using namespace System; namespace SafeArrayTesting_PlusPlus { public ref class MyCppClass { public: MyCppClass(); ~MyCppClass(); ...
I am trying to pass an array of interfaces from C# to C++/CLI. Here is the code: // *** SafeArrayTesting_PlusPlus.cpp *** #include "stdafx.h" #include <comdef.h> using namespace System; using namespace System::Runtime::InteropServices; namespace SafeArrayTesting_PlusPlus { public ref class MyCppClass { public: M...
Hi guys, i am having trouble importing c++ unmanaged dll into C# [winform]. Can someone help? Basically i am just trying to create a safearray of strings in c++ and trying to send it to C#. Here is my c++ code. extern "C" __declspec(dllexport) BOOL GetStringArr(SAFEARRAY* arr) { SAFEARRAY* myArray; SAFEARRAYBOUND rgsabound[1]; ...
My C# method needs to be invoked from C++ Originally my C# method takes a parameter of type double[], but when calling from C++ it becomes a SAFEARRAY In C++ I need to take data from an array of doubles, and populate a SAFEARRAY. I have not found any sample code to do this. Any help is appreciated ...
can safearrays be passed across process boundaries through com objects ? ...