This can happen for a few reasons, the big ones I know of are below. Event Handlers Without Strong References to the Delegate A caller subscribes to an event on the com object without keeping a strong reference to the callback delegate. Here is an example of how to do this correctly and how to … Read more
It is actually pretty easy. Just use NuGet to add the “UnmanagedExports” package to your .Net project. See https://sites.google.com/site/robertgiesecke/Home/uploads/unmanagedexports for details. You can then export directly, without having to do a COM layer. Here is the sample C# code: using System; using System.Collections.Generic; using System.Linq; using System.Runtime.InteropServices; using System.Text; using System.Threading.Tasks; using RGiesecke.DllExport; class Test … Read more
You can do that if the member function is static. Non-static member functions of class A have an implicit first parameter of type class A* which corresponds to this pointer. That’s why you could only register them if the signature of the callback also had the first parameter of class A* type.
When you write code in VB6, the compiled result is a COM component. COM components provide interfaces, coclasses, structs and enums, which are normally described using a COM type library. However, to consume that COM component in .NET, you need type description in a format that .NET understands – that is, a .NET assembly (since … Read more
You access inner classes with $ java.nio.channels.FileChannel$MapMode/READ_ONLY Mind that if you are importing FileChannel you should also import FileChannel$MapMode.
When using C# or VB.Net to either get or set a range, figure out what the total size of the range is, and then get one large 2 dimensional object array… //get values object[,] objectArray = shtName.get_Range(“A1:Z100”).Value2; iFace = Convert.ToInt32(objectArray[1,1]); //set values object[,] objectArray = new object[3,1] {{“A”}{“B”}{“C”}}; rngName.Value2 = objectArray; Note that its important … Read more
Your Maven configuration adds the Kotlin compiler plugin, but doesn’t adjust the Java compiler plugin execution so that the Java compiler runs after the Kotlin compiler. Therefore, the Java compiler runs before Kotlin, and doesn’t see Kotlin-compiled classes. Here’s a snippet showing the correct configuration for a mixed-language project (taken from the documentation): <build> <plugins> … Read more
I haven’t tried this, but there seems to be a git-hg project. The project describes itself on the page and the README as: A git-hg utility for checking out and tracking a mercurial repo. A set of scripts for checking out and tracking a mercrial [sic] project. It doesn’t seem to work bi-directionally though (see … Read more
You can’t use Microsoft.Office.Interop.Excel without having ms office installed. Just search in google for some libraries, which allows to modify xls or xlsx: http://code.google.com/p/excellibrary/ http://simpleooxml.codeplex.com/ (only xlsx)
If I recall correctly — and my memory on this is a bit fuzzy, it has been a long time since I took the Excel PIA apart — it’s like this. An event is essentially a method that an object calls when something happens. In .NET, events are delegates, plain and simple. But in COM, … Read more