最终，我选择在我的工作区（Windows 任务栏上方的屏幕区域）中最大化我的 UWP 应用程序（用 C# 编写）。我想提供一些关于创建您知道可以运行的最大化应用程序的最少说明。
我在 Visual Studio Community 2019 中使用 C# 创建了一个新的默认空白应用程序（通用 Windows），称为“绘制边界框”。我在此处添加了空格，以便我可以从“开始”菜单中访问带有空格的“绘制边界框”。
我用以下代码块替换了“App.xaml.cs”的内容。
namespace Draw_Bounding_Boxes
{
/// <summary>
/// Provides application-specific behavior to supplement the default Application class.
/// </summary>
sealed partial class App : Windows.UI.Xaml.Application
{
/// <summary>
/// Invoked when the application is launched normally by the end user. Other entry points
/// will be used such as when the application is launched to open a specific file.
/// </summary>
/// <param name="e">Details about the launch request and process.</param>
protected override void OnLaunched(Windows.ApplicationModel.Activation.LaunchActivatedEventArgs e)
{
// Resize app.
uint screenWidthInRawPixels = Windows.Graphics.Display.DisplayInformation.GetForCurrentView().ScreenWidthInRawPixels;
uint screenHeightInRawPixels = Windows.Graphics.Display.DisplayInformation.GetForCurrentView().ScreenHeightInRawPixels;
double rawPixelsPerViewPixel = Windows.Graphics.Display.DisplayInformation.GetForCurrentView().RawPixelsPerViewPixel;
double screenWidthInViewPixels = System.Convert.ToDouble(screenWidthInRawPixels) / rawPixelsPerViewPixel;
double screenHeightInViewPixels = System.Convert.ToDouble(screenHeightInRawPixels) / rawPixelsPerViewPixel;
// If offsetToScreenWidthInViewPixels is less than 15,
// on first load app will be of default size, and on second load app will be full screen.
// A loaded image will have height equal to full screen height minus app title bar height minus app toolbar height minus 5 view pixels of padding.
// Part of a loaded image with aspect ratio less than one will be behind Windows taskbar.
// This is all very complicated and undesirable.
// If offsetToScreenHeightInViewPixels is less than 40,
// on first load app will be of default size, and on second load app will be full screen.
// A loaded image will have height equal to full screen height minus app title bar height minus app toolbar height minus 5 view pixels of padding.
// Part of a loaded image with aspect ratio less than one will be behind Windows taskbar.
// This is all very complicated and undesirable.
// If offsetToScreenWidthInViewPixels is greater than or equal to 15 and offsetToScreenHeightInViewPixels is greater than or equal to 40,
// on first load app will be of PreferredLaunchViewSize, and a loaded image with aspect ratio less than one will have height exactly equal to height of app minus app title bar height minus app toolbar height.
// If PreferredLaunchViewSize.Height is only screenHeightInViewPixels - offsetToScreenHeightInViewPixels,
// part of app and a loaded image with aspect ratio less than one will be behind taskbar.
// If taskbarHeight is taken off of screenHeightInViewPixels - offsetToScreenHeightInViewPixels,
// bottom of app and coincident bottom of loaded image will be slightly above taskbar.
// I consider this ideal.
double offsetToScreenWidthInViewPixels = 15;
double offsetToScreenHeightInViewPixels = 40;
double taskbarHeight = 40;
Windows.UI.ViewManagement.ApplicationView.PreferredLaunchViewSize = new Windows.Foundation.Size(screenWidthInViewPixels - offsetToScreenWidthInViewPixels, screenHeightInViewPixels - offsetToScreenHeightInViewPixels - taskbarHeight);
Windows.UI.ViewManagement.ApplicationView.PreferredLaunchWindowingMode = Windows.UI.ViewManagement.ApplicationViewWindowingMode.PreferredLaunchViewSize;
// Set the app window to a new Frame.
Windows.UI.Xaml.Controls.Frame rootFrame = new Windows.UI.Xaml.Controls.Frame();
Windows.UI.Xaml.Window.Current.Content = rootFrame;
// Navigate the frame to the initial default page.
rootFrame.Navigate(typeof(MainPage), e.Arguments);
// Attempts to activate the application window by bringing it to the foreground and setting the input focus to it.
Windows.UI.Xaml.Window.Current.Activate();
} // protected override void OnLaunched
} // sealed partial class App
} // namespace Draw_Bounding_Boxes
我将属性x:Name="page" 添加到“MainPage.xaml”中的<Page> 标记中。
我从 MainPage.xaml 中删除了 <Grid> </Grid> 环境。
我用以下代码块替换了“MainPage.xaml.cs”的内容。
// Create namespace Draw_Bounding_Boxes to contain all classes associated with our app.
namespace Draw_Bounding_Boxes
{
// Create class MainPage that inherits fields and methods from Windows.UI.Xaml.Controls.Page and
// is used to declare and define user-interface elements and functionality.
public sealed partial class MainPage : Windows.UI.Xaml.Controls.Page
{
// Create constructor public MainPage.
public MainPage()
{
// Necessary to instantiate this Page, add a stackPanel to this Page, et cetera.
this.InitializeComponent();
// Find width of app in view pixels and height between bottom of app and bottom of title bar in view pixels.
double widthOfAppInViewPixels = Windows.UI.ViewManagement.ApplicationView.PreferredLaunchViewSize.Width;
double heightBetweenBottomOfAppAndBottomOfTitleBarInViewPixels = Windows.UI.ViewManagement.ApplicationView.PreferredLaunchViewSize.Height;
// Create a stackPanel.
Windows.UI.Xaml.Controls.StackPanel stackPanel = new Windows.UI.Xaml.Controls.StackPanel();
// Create a toolbar with width equal to the width of the app, height equal to 50 view pixels, and background color of light blue that has one row and four columns.
Windows.UI.Xaml.Controls.Grid toolbar = new Windows.UI.Xaml.Controls.Grid();
toolbar.Width = widthOfAppInViewPixels;
toolbar.Height = 50;
toolbar.Background = new Windows.UI.Xaml.Media.SolidColorBrush(Windows.UI.Colors.AliceBlue);
Windows.UI.Xaml.Controls.RowDefinition row = new Windows.UI.Xaml.Controls.RowDefinition();
toolbar.RowDefinitions.Add(row);
Windows.UI.Xaml.Controls.ColumnDefinition column = new Windows.UI.Xaml.Controls.ColumnDefinition();
column.Width = new Windows.UI.Xaml.GridLength(widthOfAppInViewPixels);
toolbar.ColumnDefinitions.Add(column);
stackPanel.Children.Add(toolbar);
page.Content = stackPanel;
}
}
}