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In the VB6 world it was very common to use “Resizer” OCXs that you just put on your forms and that they handle all the proportional resizing needed if you changed your form. It was very simple and easy. However when I started looking for something like...
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My good friend Jafet, was recently dealing with an interesting bug in Visual Studio. He created a simple Visual Studio Project that had just an interface that he exposed thru COM. He’s intention was to compile the Class Library and use the TLB file in...
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Recently I had to deal with targeting an XBAP application that had some Windows Forms controls. The problem is that those controls can only be used in a trusted environment. If you try to debug an XBAP with some Windows Forms Controls you will get an...
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My first language ever was GW-Basic. I was a teenager doing in summer work at a company that made polls about hair products and things like that. At that time I didn’t had a computer. They were tooooo expensive. And I found a manual for GW-Basic. I stole...
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COM The idea is to make a class or several classes available thru COM. Then the compiled dll or the TLB is used to generate and Interop Assembly and call the desired functions. With this solution the current C++ code base line can be kept or might require...
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During migratio of a simple project, we found an interesting migration details. The solution has a project with two Forms. Form1 and Form2. Form1 has a command button and in the Click for that command button it performs a code like UnLoad Form2. But it...
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Recenlty following a post in an AS400 Java Group, someone asked about a method for signing and verifying a file with PGP. I though, "Damn, that seems like a very common thing, it shouldn't be that difficult", and started google'ing for...
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Just more details about scripting Using the MS Scripting Object The MS Scripting Object can be used in .NET applications. But it has several limitations. The main limitation it has is that all scripted objects must be exposed thru pure COM. The scripting...
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I saw this with Francisco and this is one possible solution: ASP Source rs.Save Response, adPersistXML rs is an ADODB.RecordSet variable, and its result is being written to the ASP Response Wrong Migration rs.Save(Response <-- The ASP.NET Response...
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In VB6 you could create an OutOfProcess instance to execute some actions. But there is not a direct equivalent for that. However you can run a class in an another application domain to produce a similar effect that can be helpful in a couple of scenarios...
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We found some machines that do not show the "Attach To Process" option. This is very important for us, specially if you are testing the migration of an VB6 ActiveX EXE or ActiveX DLL to C#. There is a bug reported by Microsoft http://support...
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Have you ever wished to modify the way Visual Studio imported a COM Class. Well finally you can. The Managed, Native, and COM Interop Team (wow what a name). It looks like the name of that goverment office in the Ironman movie. Well this fine group of...
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The WebBrowser control for .NET is just a wrapper for the IE ActiveX control. However this wrapper does not expose all the events that the IE ActiveX control exposes. For example the ActiveX control has a NewWindow2 that you can use to intercept when...
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If you have some .NET code that you want to share with VB6, COM has always been a nice option. You just add couple of ComVisible tags and that's all. But... Collections can be a little tricky. This is a simple example of how to expose your Collections...
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I am a firm believer in program understanding and in that our computer skills will allow us to develop programs that will understand programs and maybe in the future even write some of them :). I also belive that natural languages ans programming languages...
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