Clearly this is a major undertaking which will involve lots of work. So my advice would be to treat it like a very long term project. Have a clear goal in mind, which addresses major issues like security, resilience, maintainability and the future of your applications. Once this has been agreed on by the stake … Read more
VB6/A uses implicit two-way UTF16-ASCII translation when reading / writing files using built-in operators. Line Input treats the file as being in ASCII (a series of bytes, each represents a character), using the current system codepage for non-Unicode programs. The read characters are converted to UTF-16. When you read a UTF-8 file in this way, … Read more
When you click on a .html file, the browser that opens it is the one that has registered the .html extension. When you open a http:// link (e.g. by typing it into the “Start->Run” box), the browser that opens is the one that has registered the HTTP protocol (although it’s usually the same browser in … Read more
You don’t actually create the manifest file in VB. A Windows application manifest is a standard text document, formatted as XML. You can create it in Notepad and save it with the appropriate file name in your application’s directory (YourAppName.exe.manifest). Microsoft has more information available here: Application Manifests. It even includes a sample manifest that … Read more
On 32-bit machines: cd C:\Windows\System32 regsvr32 mscomctl.ocx regtlib msdatsrc.tlb or on 64 bit machines: cd C:\Windows\SysWOW64 regsvr32 mscomctl.ocx regtlib msdatsrc.tlb These need to be run as administrator.
That can happen when supporting libraries (dlls or ocxs) are not registered properly or the versions of the installed libraries are different (and incompatible) with the version the app was compiled against originally. Make sure all dependent libraries are registered and the proper version. You may have to recompile the app to make it work … Read more
Dim originally (in BASIC) stood for Dimension, as it was used to define the dimensions of an array. (The original implementation of BASIC was Dartmouth BASIC, which descended from FORTRAN, where DIMENSION is spelled out.) Nowadays, Dim is used to define any variable, not just arrays, so its meaning is not intuitive anymore.
Here is a pretty standard scheme for asynchronous background processing with VB6 clients and VB6 servers. (For instance it’s in Dan Appleman’s book and Microsoft’s VB6 samples.) I think it should work for a C# client too. The VB6 ActiveX EXE object should expose an event CheckQuitDoStuff(). This takes a ByRef Boolean called Quit. The … Read more
If you want to do it with code only (no Internet Transfer Control), VBNet.mvps.org has a really good how-to article that uses the URLDownloadToFile API call. From the article: The URLDownloadToFile API is available on all versions of the Windows operating system (except Win3, WinNT3.x). By passing the remote file name and the local file … Read more
I am Eugenio La Mesa, general manager at Code Architects. I read a few comments on our VB Migration Partner and conversion tools in general, and thought I might add some hopefully useful hints. First, our conversion software does support all VB6 graphic properties and methods – with the only exception of DrawMode and ClipControls. … Read more