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
Here’s how you do it : Shell “cmd echo foo”, vbNormalFocus
Legal options: There are many copies of visual studio 6.0 on eBay that look legit. Find someone that has VB6 and have them fix it. Get an MSDN subscription (unsure which level is needed – Hans says Universal includes VB6)
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
First of all, go get MZTools for Visual Basic 6, its free and invaluable. Second add a custom error handler on every function (yes, every function). The error handler we use looks something like this: On Error GoTo {PROCEDURE_NAME}_Error {PROCEDURE_BODY} On Error GoTo 0 Exit {PROCEDURE_TYPE} {PROCEDURE_NAME}_Error: LogError “Error ” & Err.Number & ” (” … Read more
Contrary to what others have said, it IS possible to get run-time type information for UDT’s in VB6 (although it is not a built-in language feature). Microsoft’s TypeLib Information Object Library (tlbinf32.dll) allows you to programmatically inspect COM type information at run-time. You should already have this component if you have Visual Studio installed: to … Read more
VB6 Installs just fine on Windows 7 (and Windows 8 / Windows 10) with a few caveats. Here is how to install it: Before proceeding with the installation process below, create a zero-byte file in C:\Windows called MSJAVA.DLL. The setup process will look for this file, and if it doesn’t find it, will force an … Read more
Property Set is for objects (e.g., class instances) Property Let is for “normal” datatypes (e.g., string, boolean, long, etc.)