![uwp colorconverter uwp colorconverter](https://docs.microsoft.com/de-de/windows/uwp/design/controls-and-patterns/images/color-picker-alpha.png)
(m圜olor)Ĭonverter.ConvertToString(Color.PaleVioletRed)Į.Graphics.DrawString(colorAsString, Me.Font, _ Private Sub ShowColorConverter(ByVal e As PaintEventArgs)ĭim m圜olor As Color = Color.PaleVioletRedĭim converter As = _ String colorAsString = converter.ConvertToString(Color.PaleVioletRed) Į.Graphics.DrawString(colorAsString, this.Font, Private void ShowColorConverter(PaintEventArgs e) String^ colorAsString = converter->ConvertToString( Color::PaleVioletRed ) Į->Graphics->DrawString( colorAsString, this->Font, Brushes::PaleVioletRed, 50.0F, 50.0F ) System::ComponentModel::TypeConverter^ converter = System::ComponentModel::TypeDescriptor::GetConverter( m圜olor ) void ShowColorConverter( PaintEventArgs^ e )
#Uwp colorconverter code#
Paste this code into a form and call the ShowColorConverter method when handling the form's Paint event, passing e as PaintEventArgs.
#Uwp colorconverter windows#
This example is designed to be used with Windows Forms.
#Uwp colorconverter how to#
The following code example demonstrates how to use the ConvertToString method. The solution is available on my .WebControls.WebColorConverter Examples I have prepared a sample project that demonstrates the use of UISettings.ColorValuesChanged event including accent color and light/dark mode. The color change event handler should run any UI-related code with a dispatcher, as the changes not always fire on the UI thread.It is important to store a reference to the UISettings instance as a field in your class, otherwise the instance will get collected and no events will be delivered (the event subscription is weak only).There are two additional suggestions to improve the reliability of this event, thank you aasgenirb235 and Colin for noting them in the comments: I am afraid this is a bug and there is not much we can do about it. While it usually fires several times for each accent color change, sometimes the event doesn’t fire at all. Warning:the event is not always reliable. Var isDarkMode = backgroundColor = Colors.Black We must query the UIColorType.Background color and check if it is black or white: var backgroundColor = sender.GetColorValue(UIColorType.Background) In the event handler we can check the accent color either by directly looking up the Resources dictionary or by the GetColorValue method: Color accentColor = sender.GetColorValue(UIColorType.Accent) Ĭolor accentColor = (Color)Resources Īccessing the light/dark mode setting is a little less intuitive. UiSettings.ColorValuesChanged += ColorValuesChanged UISettings uiSettings = new UISettings() Whereas the former event deals with text scaling, the latter event is fired whenever the system color settings are changed. In stark contrast to most other similar Windows Runtime APIs, the UISettings do not provide a Current singleton instance property nor a GetForCurrentView factory method, but just have a simple constructor.Īpart from many properties that let us query various UI related information ( CaretBlinkRate, CursorSize or even HandPreference ) it also has two useful events: TextScaleFactorChanged and ColorValuesChanged . In such cases the UISettings class comes in handy. Observing changesĪlthough using ThemeResource will be sufficient for most cases, sometimes we need to be notified about color changes outside of XAML. įor convenience there is also a accent color-based SolidColorBrush resource, under the not-so intuitive SystemControlHighlightAccentBrush key. To access the current accent color, we can use the SystemAccentColor key. Anytime the user changes the accent color or switches between dark and light mode, the resource is updated. This allows us to dynamically reference resources based on the currently selected system theme. XAML has a concept of ThemeResource markup extension. But what if the user changes settings at runtime? Users love personalization and expect apps to adapt to their choices. For this purpose we can use the accent color.