如果我记得,我直接在XML中添加宽瓦片。我有这种线(检查Wide310x150Logo属性):
<Application Id="xxxxx" Executable="AGHost.exe" EntryPoint="View/MainPage.xaml">
<m3:VisualElements DisplayName="SeriesManiac" Square150x150Logo="Assets\150x150.png" Square44x44Logo="Assets\Logo.png" Description="SeriesManiac" ForegroundText="light" BackgroundColor="transparent" ToastCapable="true">
<m3:DefaultTile Wide310x150Logo="Assets\WideLogo.png" Square71x71Logo="Assets\71x71.png">
</m3:DefaultTile>
<m3:SplashScreen Image="Assets\Splashscreen.png" />
</m3:VisualElements>
<Extensions>
<Extension Category="windows.backgroundTasks" EntryPoint="AgHost.BackgroundTask">
<BackgroundTasks>
<Task Type="systemEvent" />
</BackgroundTasks>
</Extension>
</Extensions>
</Application>