[Bug]: `GetOpenFileName` & `IFileDialog` don't support DPI Scaling in AppSilo

[AndromedaMelody]

Version

Windows Version: 10.0.25370.1 Win32 app isolation release version: 0.1.0

Repro Steps

1. Write an application using winrt::com_ptr<IFileDialog>/GetOpenFileNameW()/GetSaveFileNameW().
2. Write an fusion manifest and declare PerMonitorV2.

   ……
   <application xmlns="urn:schemas-microsoft-com:asm.v3">
   <windowsSettings>
   <dpiAwareness xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">PerMonitorV2</dpiAwareness>
   </windowsSettings>
   </application>
   ……

3. Package the app and run it in AppSilo.

   <?xml version="1.0" encoding="utf-8"?>
   <Package ……
   xmlns:previewsecurity2="http://schemas.microsoft.com/appx/manifest/preview/windows10/security/2" 
   IgnorableNamespaces="… previewsecurity2">
   ……
   <Dependencies>
   <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.25229.0" MaxVersionTested="10.0.25229.0" />
   </Dependencies>
   <Applications>
   <Application … uap10:TrustLevel="appContainer" previewsecurity2:RuntimeBehavior="appSilo"> …… </Application>
   </Applications>
   </Package>

Unexpected Results

Open File Dialog is blurred.

[macruzco]

Thanks for reporting this @AndromedaMelody ! Indeed we have to include support for DPI scaling options when brokering the file dialog.

Could you please clarify what exactly is blurry and where to look for the blur? I haven't been able to spot the blur myself, so it would be helpful to know exactly what to look for.

Thanks!