How to remove underline when Entry receives focus in maui for windows?

Jeff Pfahl 91

When an Entry receives focus it displays a border and underline. I am handling focus indication in a different way and do not what the default styling.

Setting UseSystemFocusVisuals to false does not fix it.

balintn 11 Reputation points

2022-12-30T21:41:51.407+00:00

This seems like a good answer, but it doesn't remove the underline as the poster asked, does it?

1 answer

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 25,996 Reputation points Microsoft Vendor

2022-06-20T08:42:59.507+00:00
Hello @Jeff Pfahl ,

Please check TextControlBorderThemeThicknessFocused in Windows UI Library, and set Thickness 0. Try to add the following code in App.xaml under Platforms/ Windows :

<maui:MauiWinUIApplication.Resources> <Thickness x:Key="TextControlBorderThemeThickness">0</Thickness> <Thickness x:Key="TextControlBorderThemeThicknessFocused">0</Thickness> </maui:MauiWinUIApplication.Resources>

Best Regards,
Wenyan Zhang

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2 people found this answer helpful.
Jeff Pfahl 91 Reputation points

2022-06-20T16:10:38.43+00:00

I thought handler mappers was the preferred way to customize platform rendering.

When I add the above code to app.xaml it works but I get the following compiler errors:

Error XLS0414 The type 'MauiWinUIApplication' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built. MauiDev C:\Dev\Projects\MauiDev\MauiDev\Platforms\Windows\App.xaml 7

Error XLS0414 The type 'Thickness' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built. MauiDev C:\Dev\Projects\MauiDev\MauiDev\Platforms\Windows\App.xaml 8

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 25,996 Reputation points Microsoft Vendor

2022-06-21T09:35:03.823+00:00

We can modify the BorderThickness by Handler, but we can't use handler to set TextControlBorderThemeThicknessFocused, because TextControlBorderThemeThicknessFocused is not the property of a native control (TextBox), please check Win UI ResourceDictionary Class and ResourceDictionary.ThemeDictionaries Property.

Handler

Microsoft.Maui.Handlers.EntryHandler.Mapper.AppendToMapping("MyCustomization", (handler, view) => { #if WINDOWS handler.PlatformView.BorderThickness = new Microsoft.UI.Xaml.Thickness(0); handler.PlatformView.GettingFocus += PlatformView_GettingFocus;// you can change Thickness in PlatformView_GettingFocus method handler.PlatformView.LosingFocus += PlatformView_LosingFocus; #endif });

About compiler errors, you could report to the product team, see Report a problem with the Visual Studio product or installer

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 25,996 Reputation points Microsoft Vendor

2022-06-24T07:19:41.077+00:00

I have not heard from you for a couple of days. Please let me know if there is anything that I can help here.
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