Skip to main content

UWP - How to set app launch window size

UWP - Set app launch window size
The following Universal Windows Platform application development tutorial demonstrates how we can set the app launch window size programmatically.

In this UWP tutorial, we will set the ApplicationView class PreferredLaunchViewSize property value to set the app window preferred launch view size. We will also set the ApplicationView class PreferredLaunchWindowingMode property value to set the app window preferred launch windowing mode.

The ApplicationView class represents the active application view and associated states and behaviors.

The ApplicationView class PreferredLaunchViewSize property gets or sets the size that the app launches with when the ApplicationView class PreferredLaunchWindowingMode property is set to PreferredLaunchViewSize, except in cases where the system manages the window size directly. The PreferredLaunchViewSize property value is a Size.

The ApplicationView class PreferredLaunchWindowingMode property gets or sets a value that indicates the windowing mode the app launches with. This property value is an ApplicationViewWindowingModeenumeration value that indicates the windowing mode of the app. By default, PreferredLaunchWindowingMode is set to Auto.

The ApplicationViewWindowingMode enumeration defines constants that specify whether the app window is auto-sized, full-screen, or set to a specific size on launch. The PreferredLaunchViewSize value specifies the window is sized as specified by the ApplicationView class PreferredLaunchViewSize property.
MainPage.xaml

<Page
    x:Class="UniversalAppTutorials.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:UniversalAppTutorials"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    >
    <StackPanel Padding="50">
    </StackPanel>
</Page>
MainPage.xaml.cs

using Windows.UI.Xaml.Controls;
using Windows.UI.ViewManagement;
using Windows.Foundation;


namespace UniversalAppTutorials
{
    public sealed partial class MainPage : Page
    {
        public MainPage()
        {
            this.InitializeComponent();

            /*
                ApplicationView
                    Represents the active application view and
                    associated states and behaviors.

                PreferredLaunchViewSize
                    Gets or sets the size that the app launches with when the
                    ApplicationView.PreferredLaunchWindowingMode property is set
                    to PreferredLaunchViewSize, except in cases
                    where the system manages the window size directly.

                ApplicationViewWindowingMode
                    PreferredLaunchViewSize: When launched, the window is sized
                    as specified by the ApplicationView.PreferredLaunchViewSize property.
            */

            // Set the app window preferred launch view size
            ApplicationView.PreferredLaunchViewSize = new Size(Height = 300, Width = 450);

            // Set app window preferred launch windowing mode
            ApplicationView.PreferredLaunchWindowingMode = ApplicationViewWindowingMode.PreferredLaunchViewSize;
        }
    }
}
Labels:

Popular posts from this blog

Restricting Jetpack Compose TextField to Numeric Input Only

Jetpack Compose has revolutionized Android development with its declarative approach, enabling developers to build modern, responsive UIs more efficiently. Among the many components provided by Compose, TextField is a critical building block for user input. However, ensuring that a TextField accepts only numeric input can pose challenges, especially when considering edge cases like empty fields, invalid characters, or localization nuances. In this blog post, we'll explore how to restrict a Jetpack Compose TextField to numeric input only, discussing both basic and advanced implementations. Why Restricting Input Matters Restricting user input to numeric values is a common requirement in apps dealing with forms, payment entries, age verifications, or any data where only numbers are valid. Properly validating input at the UI level enhances user experience, reduces backend validation overhead, and minimizes errors during data processing. Compose provides the flexibility to implement ...
Read more

jetpack compose - TextField remove underline

Compose TextField Remove Underline The TextField is the text input widget of android jetpack compose library. TextField is an equivalent widget of the android view system’s EditText widget. TextField is used to enter and modify text. The following jetpack compose tutorial will demonstrate to us how we can remove (actually hide) the underline from a TextField widget in an android application. We have to apply a simple trick to remove (hide) the underline from the TextField. The TextField constructor’s ‘colors’ argument allows us to set or change colors for TextField’s various components such as text color, cursor color, label color, error color, background color, focused and unfocused indicator color, etc. Jetpack developers can pass a TextFieldDefaults.textFieldColors() function with arguments value for the TextField ‘colors’ argument. There are many arguments for this ‘TextFieldDefaults.textFieldColors()’function such as textColor, disabledTextColor, backgroundColor, cursorC...
Read more

jetpack compose - Image clickable

Compose Image Clickable The Image widget allows android developers to display an image object to the app user interface using the jetpack compose library. Android app developers can show image objects to the Image widget from various sources such as painter resources, vector resources, bitmap, etc. Image is a very essential component of the jetpack compose library. Android app developers can change many properties of an Image widget by its modifiers such as size, shape, etc. We also can specify the Image object scaling algorithm, content description, etc. But how can we set a click event to an Image widget in a jetpack compose application? There is no built-in property/parameter/argument to set up an onClick event directly to the Image widget. This android application development tutorial will demonstrate to us how we can add a click event to the Image widget and make it clickable. Click event of a widget allow app users to execute a task such as showing a toast message by cli...
Read more