VB6 to C# Upgrade Demo: gmStudio FileExplorer Sample (Tool-Assisted Rewrite)

Описание: Modernizing a VB6/ActiveX application is rarely “just a rewrite.” In this gmStudio FileExplorer sample demo, we walk end-to-end through a small but realistic upgrade—starting with a standard translation that builds, then moving into a custom upgrade where COM components and APIs are systematically replaced so the WinForms UI renders correctly and the app runs.

You’ll see how gmStudio supports an agile, tool-assisted rewrite methodology: using translation scripts (gmPL), snapshots/comparisons, refactor libraries, and targeted rule changes to incrementally improve accuracy, remove interop dependencies, and apply upgrades like Twips-to-Pixels and custom assembly references. The result is a repeatable modernization process that shifts effort away from manual construction and toward higher-value technical design and optimization.
Learn more about gmStudio and Great Migrations’ modernization approach at https://www.greatmigrations.com.

#LegacyModernization #VB6 #VB6toCSharp #COMInterop #ActiveX #WinForms #ToolAssistedRewrite #SoftwareModernization #ApplicationModernization #CodeMigration
#VB6Upgrade #SoftwareReengineering #MigrationStrategy #ModernizationStrategy

00:00 Overview: GM Studio FileExplorer upgrade demo (end-to-end)
00:38 Legacy VB6 app tour (ActiveX controls + behaviors)
01:55 Standard upgrade via Wizard (auto translate/build/reports)
03:26 Workspace tour (rules, IDFs, translations, reports)
04:05 Why the form looks “off” (stub framework in standard builds)
05:03 Custom upgrade strategy (translation tuning + upgrade features)
07:23 Translation tuning loop: translate / deploy / build / compare
09:45 Two-job setup for side-by-side configurations
11:46 Snapshots & comparisons (inspect rule impact)
13:45 Translation scripts (gmPL): templates, options, processing pipeline
16:00 Switching to custom script (refactoring + custom rules loaded)
21:11 Runnable WinForms result (what’s improved / known deltas)
24:17 COM/API replacements: refactor libraries + IDFs + deep migrations
46:55 Refactoring example: Twips-to-Pixels (and related fixes)
52:13 Build models + GM runtime library (gmRTL) usage
55:08 Recap + what’s next (ASP/ASP.NET, deeper COM/control migrations)