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
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
If you have a window handle for the form (from the COM DLL) then you can disable visual styles on that form using the Win32 API: SetWindowTheme( hwnd, “”, “” ); I believe you’ll have to P/Invoke the API. Here’s the definition: [DllImport(“uxtheme.dll”, ExactSpelling=true, CharSet=CharSet.Unicode)] public static extern int SetWindowTheme( IntPtr hWnd, String pszSubAppName, String … Read more
I’m pretty sure there’s no good way to force VB6 to unload the control. Here’s what I do… instead of running Visual C and Visual Basic side-by-side, run VB6 under VC : Load up VC Open the project containing your COM objects Edit, change, etc. In VC, set the Output Executable to be VB6.EXE with … Read more
VisualStudio offers (or at least offered) a wizard to do a conversion from VB6 to VB.NET (which could then be converted to C# with a bit of work, possibly helped by #develop’s VB.NET <-> C# converter), but when last I used it, for anything non-trivial there was a lot of manual work needing to be … Read more
Try &HABCD, that’s how it works for most BASIC languages.
VB is a full-fledged programming language which can be used to create compiled applications, while VBScript is a sub-set of VB and is a scripting language that can be used to run a set of commands, similar to an old-school DOS batch file. Generally, a scripting language can not be used to create a full-fledged … Read more
Property Set is for objects (e.g., class instances) Property Let is for “normal” datatypes (e.g., string, boolean, long, etc.)
VB doesn’t have such a construct at the language level. It has single line comments using apostrophe character: ‘ hello world ‘ this is a comment Rem this is also a comment However, Visual Studio has a functionality to automate this task. Select the lines you want and press Ctrl+K+C for commenting and Ctrl+K+U for … Read more
Windows 10 has thin invisible borders on left, right, and bottom, it is used to grip the mouse for resizing. The borders might look like this: 7,0,7,7 (left, top, right, bottom) When you call SetWindowPos to put the window at this coordinates: 0, 0, 1280, 1024 The window will pick those exact coordinates, and GetWindowRect … Read more