com

问题 To add support for some new features in a VB3.0 legacy application, I need to create a COM object in Java. I found some tutorials in the Internet, but they all refer to the discontinued javareg.exe tool distributed by Microsoft. I was unable to find a download place nor the MSJVM virtual machine required to run the COM object's code. So, in nowadays, how can I expose a COM-object written in Java to any other application? 回答1: Check the ActiveX Bridge. The ActiveX Bridge allow a component

问题 How do i import an Interface Definition Language ( idl ) file into Delphi; converting the types and interfaces to a pascal file? I've tried: File , Open : it just shows the text of the .idl text file Project , Add to project : It just (acts like) it adds a .idl text file to the project Component , Install component , Import a Type Library , Add : But it causes a handled crash Component , Install component , Import ActiveX Control , Add : But it causes a handled crash using Embarcadero's

问题 For years I've been avoiding the use of Public Type UDT's in VBA, because they're hard to pass around and I never really bothered trying to understand why.. until now - it was simply easier to just create a class module and work with actual objects instead. But recently I gave it a shot, and once I figured they had to be passed ByRef (as an array would), things started to look like I could start using them. So I defined a Public Type in a standard module, got this compile error: So I moved

问题 I have asp.net Web Api 2 Application that is working with External COM Object (pvxcom) . In Some reasons COM Object is hanging, there is no chance for me to report bug for pvxcom . I need to figure out something to bypass this issue. I want to clarify some points. How can I set maximimum execution time for external source ? How can I force browser to resent request ? ( is it possible ? ) How can I figure out in which procedure of COM Object is hanging ? Is it good practice to dispose com

问题 I'm attempting to call the following method: https://msdn.microsoft.com/en-us/library/dn469242(v=vs.85).aspx The corresponding powershell is: wmic /namespace:\\ROOT\Microsoft\Windows\DesiredStateConfiguration class MSFT_DSCLocalConfigurationManager call GetConfigurationStatus I can't quite figure out how to do it correctly using go-ole. Here's what I have so far. It fails with: invoke_test.go:47: wmi: error calling method GetConfiguration: Exception occurred. Generic failure ) When I try

问题 I've got a utility class with a few method relating to XML schemas. Without any code changes nor any know changes to the environment, it has suddenly started to fail systematically. The method that fails: public static XmlSchema GetSchema(string xsdFileName) { string path = MyConfiguration.XmlSchemaLocation; if (!path.EndsWith(@"\")) { path += @"\"; } path += xsdFileName; return XmlSchema.Read(File.OpenRead(path), null); } The stack trace shows XmlSchema.Read is internally attempting to

问题 I am creating a COM client within a thread and performing several operations with this client. Each thread is spawned from a server that uses Python's socketserver module which has built-in threading support. When I am loading and using this COM object there is an expected spike in memory usage by python.exe. With 10 concurrent threads there is a peak in memory usage of about 500Mb. However when the operations are finished and the COM object is apparently released, there are 50Mb of

问题 In order to learn multithreading, I've created a thread inside a COM Thread ( TRemoteDataModule ). This is my Component Factory: TComponentFactory.Create(ComServer, TServerConn2, Class_ServerConn2, ciMultiInstance, tmApartment); Inside the Thread, I didn't needed to Call CoInitialize to use TADOQuery.Create , .Open ... .Exec I read that I need to initialize the COM library on a thread before you call any of the library functions except CoGetMalloc, to get a pointer to the standard allocator,

问题 i have an ADO Recordset object that is created in a background thread: var conn: TADOConnection; rs: _Recordset; begin conn := CreateDatabaseConnection(); rs := conn.Execute(CommandText, cmdText, []); conn.Free; //Give the recordset to the UI thread //Don't forget to add a reference before we stuff it into a 32-bit variable rs._AddRef(); PostMessage(hwndUIThreadWindow, WM_HeresTheRecordsetYouAskedFor, WPARAM(rs), 0); end; And then the Recordset is handed to my "main" thread: procedure

问题 I'm debugging C++/COM application, looking at how we AddRef and Release COM objects. I came around weird case when AddRef returns 0. Here is how I get the return value: ULONG TraceAddRef(LPUNKNOWN pUnk, const std::string &a_msg) { ULONG count = pUnk->AddRef(); // count == 0 at some point after execution ATLTRACE("%s *** AddRef: pUnk = 0x%p, referenceCount = %lu\n", a_msg.c_str(), pUnk, count); return count; } pUnk is actually IWebBrowser2 COM interface to a web control: pUnk 0x20d763ac