Universal Windows Platform

Welcome to the Windows Platform Developer (WPDev) Feedback site. This feedback forum provides the WPDev community with a channel for feedback on the following topics:

  • Windows developer platform (APIs, runtimes, and controls)
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Your suggestions will be reviewed by the Windows platform developer team, providing feedback to help with planning ideas and to better understand how developers are using the development platform.

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If you’re new to this whole UserVoice thing, we’d like to note two important things about this site: (a) List items (and item rankings) represent community interest in features, and does not represent an actual priority list for the product team; and (b) Suggestions made using this forum will be moderated if they do not actually represent a feature request.

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  1. Modern Windows UI in Win32 desktop applications

    Bring modern Windows UI to existing Win32, WPF and Windows Forms desktop apps with the option to adopt islands of Windows.UI.Composition and Windows.UI.XAML content incrementally. Allows desktop apps to incrementally adopt UI innovations and creates a bridge to UWP for app UI.

    361 votes
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      85 comments  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
    • SwipeControl should support mouse input

      The SwipeControl control should support mouse input as well as touch input. Currently it only supports touch input.

      I appreciate that swipe controls have come out of developments around touch interfaces. However on a platform that allows for a single app to run on both desktop and touch devices I think that users will be expecting to be able to interact with the app in similar ways across devices.

      Microsoft have set precedent for this in their own apps. Outlook for example utilises a SwipeControl type arrangement (that can be interacted with using a mouse) for marking emails as read…

      10 votes
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        2 comments  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
      • 3D Volumetric Content in the Visual Layer/ XAML

        Enable 2D application developers to easily use 3D volumetric content in XAML/Composition by configuring spatial scenes and manipulating transforms and skeletal animations.

        8 votes
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          1 comment  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
        • 1803 NavigationView built-in back button placement looks terrible.

          For 1803, I like that the backbutton is now built-in to the NavigationView control. However, the placement of the button looks terrible next to the hamburger button.

          I was actually excited to see it was built into the Nav control because i can't figure out where to place the backbutton either such that it doesn;t look weird and out of place... but, the built-in nav backbutton doesn't solve the problem either... it still look weird and extreme beta...

          3 votes
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            3 comments  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
          • UWP Grid should have ShowGridLines property from WPF

            The WPF Grid control had a ShowGridLines property. This is helpful for layout debugging. This property is missing in UWP.

            3 votes
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              0 comments  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
            • Allow x:DefaultBindMode on App Element in App.xaml

              Today we have the x:DefaultBindMode attribute to define the default binding mode generated for a compiled data binding created with x:Bind.

              We can set that mode on an element or on a parent element.

              It would be a huge advantage to support this attribute also on the App-object in the App.xaml-file, and to make this the "ultimate root".

              This would allow me to specify an application wide default binding mode, and I could set it in this single place for example to OneWay.

              1 vote
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                1 comment  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
              • Issue with Scroll Bar

                Hello guys,

                I experienced problem with UWP ListView, particularly using ISupportIncrementalLoading interface as a datasource.

                A few words about problem context:
                In our UWP app there is a ListView, and it uses ISupportIncrementalLoading as a DataSource.
                And while next part of data is loading, ListView is disabled.

                So, the problem in that if you scroll ListView in way you catch ScrollBar and pull it to the down,
                when you scroll to the end of the list, ListView will be disabled for some period of time (while data is loading).
                And if you release mouse button from ScrollBar
                while ListView is…

                3 votes
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                  working on it  ·  1 comment  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
                • Add ConstraintsPanel

                  Add a panel that allows to create a design with constraints (and support in Blend)

                  2 votes
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                    2 comments  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
                  • RichTextBlock TextHighlighter crashes if used after an InlineUIElement

                    Exactly as the title says. Attempting to use TextHighlighter(s) with a StartIndex after an InlineUIElement will result in a crash. I have included code to reproduce the issue:

                    C#: https://hastebin.com/owacelasov.cs

                    XAML: https://hastebin.com/ujuxacilug.xml

                    The issue seems to be somewhere in Windows.UI.Xaml.dll!TextBlockViewHelpers::AdjustPositionByCharacterCount(). It appears that garbage data (from the stack, I assume) is being used for the value `curInlineLength`. Call stack: https://hastebin.com/legulilabu

                    1 vote
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                      1 comment  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
                    • Why is CharacterCasing not added to TextBlocks, Runs, and RichTextBlock

                      CharacterCasing has been added to the platform, but it seems to only be used on editable text controls. I have been asking for this text tranform feature since the Windows Phone 7 Silverlight days, but even though most of the All Caps and All Lowercase text styles have been left behind in the Metro design days, there is still a need and wish to display labels, and other non-editable text content, in uppercase and lowercase styles, which exists in HTML with the TextTransform property in CSS.

                      1 vote
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                        0 comments  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
                      • Support Multiple Functions for x:Bind

                        The following example doesn't show an error in the Designer, but throws errors in the generated code. If I add a (x:Int32) case before the inner function I get a 'Functions cannot have other functions as parameters' error.

                        Width="{x:Bind exf:Bind.Clamp(exf:Bind.Subtract(ContentHolder.(ex:FrameworkElementExtensions.ActualWidth), 30), 100, 300)}"

                        It'd be great if we could chain functions together in x:Bind to create more complex expressions. The above case is trying to subtract from the width of another element, but clamp it within a specific range.

                        Rather than writing a specific function for this purpose, it'd be nice if it could be composed of individual pieces that…

                        3 votes
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                          on the backlog  ·  1 comment  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
                        • Improve MarkupExtension and relatives (as Binding, name scope and the XAML interpreter)

                          The current implementation of MarkupExtension in UWP is hardly usable as it is.
                          And some implementation choices are unfortunate.

                          My proposal:

                          1. A GetTarget() function should be added to MarkupExtension.
                          Because ProvideValue() does not give any way to retrieve the target control and property.
                          Knowing the XAML Control and property that have instantiated the markup extension is essential in many, if not most, scenarios.
                          Please note WPF let retrieve this information.

                          2. For the class that inherit MarkupExtension, the constructor parameters should be taken into consideration by the XAML interpreter.
                          In order to be able to write things like:
                          Property="{MyMarkupExtension…

                          1 vote
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                            0 comments  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
                          • With Sets should come some clear and carefully set out guidance for App UI and Top Bars in apps

                            Sets is set to be the biggest change to Window and App UI, and so before it goes live, Microsoft needs to establish clear UI goals for making apps look like they belong and fit into these Tabs.

                            I have been exploring how you would go about making App layouts "work" within their Tab, and thought I would share and pass it on.

                            I am open to be convinced, but without a Top Bar of some kind, I don't think Apps can look good with Sets.

                            https://imgur.com/4LvK4ux.png

                            1 vote
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                              0 comments  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
                            • Load PathIcon "data" from svg file added to project

                              Suggestion for Pathicon "DataUri Property" for loading PathIcon from a Svg File, instead of specifying messy vector strings, nobody really wanted to put this stuff ("F1 M 16,12 20,2L 20,16 1,16") in their xaml. Example:

                              <PathIcon
                              DataUri="ms-appx:///Svg/MyButton.svg"
                              HorizontalAlignment="Center"/>

                              Notice: "DataUri Property" and Resource path ms-appx:/// pointing to svg file added to visual studio project under an Svg folder.

                              Another possibility is to allow DataUri to point to a text file holding this type of stuff: "F1 M 16,12 20,2L 20,16 1,16". Example:

                              <PathIcon
                              DataUri="ms-appx:///PathIcons/MyButton.txt"
                              HorizontalAlignment="Center"/>

                              Then, MyButton.txt can contain:

                              "F1 M 16,12 20,2L 20,16 1,16".

                              1 vote
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                                1 comment  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
                              • Add Binding by DependencyProperty in addition to string in PropertyPath (code behind)

                                It's not possible to bind to a custom attached property in a different namespace in code behind. Binding in WPF the PropertyPath took the DependencyProperty itself as an argument, so you could do this. In UWP, it only takes a string instead which will throw an exception if given a namespace. It'd be great for the PropertyPath in UWP to also work the way WPF did and take the DependencyProperty to create the binding path from any source.

                                1 vote
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                                  0 comments  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
                                • TextBox control need HeightLines property

                                  Would be nice if you could set the height of a TextBox using number of Lines. Example:

                                  <!-- Set TextBox Height to 10 lines (REQUESTED FEATURE)-->
                                  <TextBox HeightLines="10" AcceptsReturn="true"/>

                                  <!-- Set TextBox Height to 300 pixels (CURRENT ONLY PIXELS)-->
                                  <TextBox Height="300" AcceptsReturn="true"/>

                                  The reason why its a good idea to add a HeightLine property is that it allows everything to be done in XAML, setup the FontSize, FontFamily, and the Pixels size automatically to expand to match exactly 10 lines. Previously, this is messy because it requires setting from C# code, to measure height of font and multiply by number…

                                  2 votes
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                                    0 comments  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
                                  • 1 vote
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                                      0 comments  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
                                    • UIElement.PreviewKeyDown Event unreliable

                                      Super glad you guys added this event to the UWP controls. It is the only way I have found to grab keyboard events before a control does something I don't want in my app. I do wish it was more reliable though. Events don't always route up to the root control (in my case a Page) as one might expect with an event that uses the "Tunneling Routing Strategy" as described in the docs. In particular I've found if a Windows.UI.Xaml.Controls.ScrollViewer has focus then the PreviewKeyDownEvent on the root Page control never gets fired. The PreviewKeyDownEvent is still useful for…

                                      1 vote
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                                        0 comments  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
                                      • controls for move and resizing controllers by user

                                        the user should move and resize the element by mouse and keyboard.
                                        there is floating panel in Xamlbrewer. but it doesn't support select multiple controls and resizing.
                                        that would support selecting multiple controls as property and then could move in parent and resizing them by user

                                        1 vote
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                                          0 comments  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
                                        • Add "Delay" or "KeyTime" property to Setter

                                          With Composition Behaviors we have a very nice way to do animations using just setters, however if you want to change Visibility of a control after performing animation you have to add a storyboard to your visual state, otherwise it will be changed immediately.

                                          Would be great if setter had "Delay" property to only execute it after a certain amount of time.

                                          1 vote
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                                            0 comments  ·  XAML/Controls/Composition  ·  Flag idea as inappropriate…  ·  Admin →
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