Fix #20 and #21: file association + clipboard copy#22
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#20: Register .msix/.msixbundle/.appx/.appxbundle as supported file types via a windows.fileTypeAssociation extension in Package.appxmanifest. Right- click `Open with MSIXplainer` now launches the app and loads the package. Wiring: * MainPageViewModel.LoadPackageFromPath(string) extracted as public so it can be reused by the picker and by file activation. * App.OnLaunched captures PendingFileActivationPath from AppInstance.GetCurrent().GetActivatedEventArgs() BEFORE new MainWindow() so the path is available when MainPage_Loaded fires. * MainPage_Loaded calls App.ConsumePendingFileActivationPath() and invokes the VM. Avoids a DispatcherQueue.TryEnqueue race where the lambda ran before Frame.Content was set. #21: WinUI 3 Clipboard.SetContent was throwing CO_E_NOTINITIALIZED (0x800401F0). Root cause: Program.cs Main was marked [MTAThread]. Because the .csproj sets DISABLE_XAML_GENERATED_MAIN, the auto-generated [STAThread] Main is suppressed and our hand-written one wins. Everything else (XAML, bindings, pickers) worked on MTA, but WinRT OLE-backed APIs like DataTransfer.Clipboard refuse to run there. One-line fix: [STAThread]. Added a comment in Program.cs so nobody silently flips it back. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Closes #20 and #21.
#20 — Right-click
Open with MSIXplainerRegisters
.msix/.msixbundle/.appx/.appxbundleviawindows.fileTypeAssociationso Explorer can hand a file to the app.MainPageViewModel.LoadPackageFromPathis now public and shared by the picker and file activation.App.OnLaunchedcaptures the activation path BEFORE constructingMainWindowsoMainPage_Loadedcan consume it synchronously.#21 — Copy button did nothing
Clipboard.SetContentwas throwingCO_E_NOTINITIALIZED(0x800401F0). Root cause:Program.csMainwas marked[MTAThread]. Because the csproj setsDISABLE_XAML_GENERATED_MAIN, the auto-generated[STAThread]Mainis suppressed and ours wins. Everything else (XAML, bindings, pickers) ran fine on MTA but WinRT OLE-backed APIs refuse to. One-line fix:[STAThread]— with a guardrail comment so nobody flips it back.Testing
BuildAndRun.ps1.