com

问题 I am building a GIS Application but whenever I run the code it's giving me this error System.Runtime.InteropServices.COMException was unhandled Retrieving the COM class factory for component with CLSID {FBF5715D-A05D-11D4-A64C-0008C711C8C1} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)). Also, in the Project Properties the Option for Register For COM Interop is disabled. 回答1: This could also be an issue of building

问题 I need to process a number of dll's and exe files in a folder and determine what type of file I am dealing with: .NET, COM, Win32 or some other alien life form. I've been trying to determine the easiest way to detect the type of a DLL, what do you think of this: COM dll => I do a LoadLibrary, then GetProcAddress for " DllRegisterServer ". If I get a valid return, it's a COM file. .NET dll => If the dll depends on MSCOREE.DLL it's always a .NET dll? Win32 dll => If both the above tests fail,

问题 Sometimes when I end the application and it tries to release some COM objects, I receive a warning in the debugger: RaceOnRCWCleanUp was detected If I write a class which uses COM objects, do I need to implement IDisposable and call Marshal.FinalReleaseComObject on them in IDisposable.Dispose to properly release them? If Dispose is not called manually then, do I still need to release them in the finalizer or will the GC release them automatically? Now I call Dispose(false) in the finalizer

问题 I have an application that uses Office interop assemblies. I am aware about the "Runtime Callable Wrapper (RCW)" managed by the runtime. But I am not very sure how the reference count gets incremented. MSDN says, RCW keeps just one reference to the wrapped COM object regardless of the number of managed clients calling it. If I understand it correctly, on the following example, using Microsoft.Office.Interop.Word; static void Foo(Application wrd) { /* .... */ } static void Main(string[] args)

问题 While working with COM in C++ the strings are usually of BSTR data type. Someone can use BSTR wrapper like CComBSTR or MS's CString . But because I can't use ATL or MFC in MinGW compiler, is there standard code snippet to convert BSTR to std::string (or std::wstring ) and vice versa? Are there also some non-MS wrappers for BSTR similar to CComBSTR ? Update Thanks to everyone who helped me out in any way! Just because no one has addressed the issue on conversion between BSTR and std::string ,

问题 What criteria should I use to decide whether I write VBA code like this: Set xmlDocument = New MSXML2.DOMDocument or like this: Set xmlDocument = CreateObject("MSXML2.DOMDocument") ? 回答1: As long as the variable is not typed as object Dim xmlDocument as MSXML2.DOMDocument Set xmlDocument = CreateObject("MSXML2.DOMDocument") is the same as Dim xmlDocument as MSXML2.DOMDocument Set xmlDocument = New MSXML2.DOMDocument both use early binding. Whereas Dim xmlDocument as Object Set xmlDocument =

问题 .NET objects are free-threaded by default. If marshaled to another thread via COM, they always get marshaled to themselves, regardless of whether the creator thread was STA or not, and regardless of their ThreadingModel registry value. I suspect, they aggregate the Free Threaded Marshaler (more details about COM threading could be found here). I want to make my .NET COM object use the standard COM marshaller proxy when marshaled to another thread. The problem: using System; using System

问题 Say I have a class BaseClass that implements IBaseClass Then I have an interface IClass that inherits IBaseClass. Then I have a class named class that implements IClass. For example: [ComVisible(true), InterfaceType(ComInterfaceType.IsDual), Guid("XXXXXXX")] public interface IBaseClass { [PreserveSig] string GetA() } [ComVisible(true), InterfaceType(ComInterfaceType.IsDual), Guid("XXXXXXX")] public interface IClass : IBaseClass { [PreserveSig] string GetB() } [ComVisible(true), ClassInterface

问题 Say I have a class BaseClass that implements IBaseClass Then I have an interface IClass that inherits IBaseClass. Then I have a class named class that implements IClass. For example: [ComVisible(true), InterfaceType(ComInterfaceType.IsDual), Guid("XXXXXXX")] public interface IBaseClass { [PreserveSig] string GetA() } [ComVisible(true), InterfaceType(ComInterfaceType.IsDual), Guid("XXXXXXX")] public interface IClass : IBaseClass { [PreserveSig] string GetB() } [ComVisible(true), ClassInterface

问题 I am interested in using/learning RoR in a project where I have to use a .NET dll. Is Ruby capable of importing a .NET dll? 回答1: While IronRuby will make short work of talking to your .NET dll (it'll be literally no code at all), it was abandoned by microsoft, and it never got a large enough open source community to keep it going after that event. I wouldn't recommend it these days Regarding the COM solution, this may actually be a good way to go. You don't need the RubyCOM library - that