Vb6 Error Handling

Applies the CSEH (Code Style for Error Handler) pattern when adding or editing error handling in Visual Basic 6 procedures. Covers the structured On Error GoTo template with EhHeader/EhFooter regions, two CSEH styles (ErrRaise for utility functions that propagate to callers, and MsgBox for top-level UI procedures), line numbering (starting at 100, increments of 5) to enable Erl in error handlers, structured re-raise via Err.Raise with vbObjectError offset and qualified source string in App.Module.Procedure format, error message format including Err.Number, Err.Description and Erl, cleanup-before-raise discipline, and the legitimate use of On Error Resume Next strictly limited to cleanup and dispose routines. Activates whenever modifying VB6 procedures that have or need On Error handlers, the CSEH marker comment, numbered code lines, Err.Raise calls, or any discussion of error propagation, error logging, or fault tolerance in VB6.

'CSEH: ErrRaise
Public Function GetActiveCustomer(...) As Object

mkdir -p ~/.claude/skills/vb6-error-handling
curl -L https://claudskills.com/skills/vb6-error-handling/SKILL.md \
  -o ~/.claude/skills/vb6-error-handling/SKILL.md

@misc{vb6-error-handling-2026,
  author    = {alexcassol},
  title     = {Vb6 Error Handling [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/vb6-error-handling/}
}