那些遇到过的问题

WPF-无边界窗口无法正确最大化

Ben*_*man 5 c# wpf xaml

好吧，所以我一直在搜索Google几个小时，似乎无法找到我所遇到问题的直接答案。我有一个自定义窗口WindowStyle = "None"和AllowsTransparency = "True"当我点击我的最大化按钮：

    private void MaximizeButton_Click(object sender, RoutedEventArgs e)
    {
        if(this.WindowState == WindowState.Normal)
        {

            App.Current.MainWindow.WindowState = WindowState.Maximized;
        }
        else
        {
            App.Current.MainWindow.WindowState = WindowState.Normal;
        }
    }
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它几乎完全按照预期的方式最大化，除了在窗口的顶部和左侧似乎有-6px的空白。

这是它的样子

我不希望有空白（只有白色，因为Google Chrome在它后面是开放的，实际上是透明的）。我需要使应用程序最大化以适合整个屏幕（任务栏除外）。到目前为止，我发现的唯一解决方法是将窗口的边距设置Margin = "6, 6, 0, 0"为按下最大化按钮时。这是其余的代码供参考：

启动文件

<Window x:Class="Expense_Calculator.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:Expense_Calculator"
    mc:Ignorable="d"
    Title="MainWindow" Height="350" Width="525"
    WindowStartupLocation="CenterScreen"
    WindowStyle="None"
    AllowsTransparency="True">
<Grid Name="Container" Background="#323232">
    <Grid.RowDefinitions>
        <RowDefinition Height="33"/>
        <RowDefinition Height="*"/>
    </Grid.RowDefinitions>
    <Grid>
        <DockPanel Style="{StaticResource TitleDockPanel}">
            <Label Style="{StaticResource TitleBarTitle}">App Name</Label>
            <Button Name="CloseButton" Click="CloseButton_Click" DockPanel.Dock="Right" Style="{StaticResource TitleBarButtonClose}">
                <Image Source="images/close.png"/>
            </Button>
            <Button Name="MaximizeButton" Click="MaximizeButton_Click" DockPanel.Dock="Right" Style="{StaticResource TitleBarButton}">
                <Image Source="images/maximize.png"/>
            </Button>
            <Button Name="MinimizeButton" Click="MinimizeButton_Click" DockPanel.Dock="Right" Style="{StaticResource TitleBarButton}">
                <Image Source="images/minimize.png"/>
            </Button>
        </DockPanel>
    </Grid>
    <Grid Style="{StaticResource UserArea}" Grid.Row="1">
        <Grid Name="WelcomePage">
            <Grid.RowDefinitions>
                <RowDefinition/>
                <RowDefinition/>
            </Grid.RowDefinitions>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto"/>
            </Grid.ColumnDefinitions>
            <Label Style="{StaticResource Label1}">Welcome to your Expense Calculator!</Label>
            <Button Cursor="Hand" Style="{StaticResource Button1}" Grid.Row="1">Get Started</Button>
        </Grid>
    </Grid>
</Grid>
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StartUp.xaml.cs

using System.Windows;

namespace Expense_Calculator
{
    /// <summary>
    /// Interaction logic for StartUp.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            this.MaxHeight = SystemParameters.WorkArea.Height;
            this.MaxWidth = SystemParameters.WorkArea.Width;
            InitializeComponent();
        }

        private void CloseButton_Click(object sender, RoutedEventArgs e)
        {
            Application.Current.Shutdown();
        }

        private void MaximizeButton_Click(object sender, RoutedEventArgs e)
        {
            if(this.WindowState == WindowState.Normal)
            {
                App.Current.MainWindow.WindowState = WindowState.Maximized;
            }
            else
            {
                App.Current.MainWindow.WindowState = WindowState.Normal;
            }
        }

        private void MinimizeButton_Click(object sender, RoutedEventArgs e)
        {
            this.WindowState = WindowState.Minimized;
        }
    }
}
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应用程式

<Application x:Class="Expense_Calculator.App"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:local="clr-namespace:Expense_Calculator"
         StartupUri="StartUp.xaml">
<Application.Resources>

    <!--Title Bar-->
    <Style x:Key="TitleDockPanel" TargetType="DockPanel">
        <Setter Property="VerticalAlignment" Value="Top"/>
        <Setter Property="Background" Value="#323232"/>
        <Setter Property="Height" Value="33"/>
    </Style>
    <Style x:Key="TitleBarTitle" TargetType="Label">
        <Setter Property="Foreground" Value="White"/>
        <Setter Property="VerticalAlignment" Value="Center"/>
        <Setter Property="FontSize" Value="13"/>
        <Setter Property="FontWeight" Value="DemiBold"/>
        <Setter Property="Padding" Value="10, 0"/>
    </Style>
    <Style x:Key="TitleBarButton" TargetType="Button">
        <Setter Property="Cursor" Value="Hand"/>
        <Setter Property="HorizontalAlignment" Value="Right"/>
        <Setter Property="VerticalAlignment" Value="Center"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Button">
                    <Border x:Name="border" Background="#323232" Height="33" Width="33">
                        <ContentPresenter VerticalAlignment="Center" HorizontalAlignment="Center" Width="15" Height="15"></ContentPresenter>
                        <VisualStateManager.VisualStateGroups>
                            <VisualStateGroup x:Name="CommonStates">
                                <VisualStateGroup.Transitions>
                                    <VisualTransition GeneratedDuration="0:0:.1"/>
                                </VisualStateGroup.Transitions>
                                <VisualState x:Name="Normal"/>
                                <VisualState x:Name="MouseOver">
                                    <Storyboard>
                                        <ColorAnimation Storyboard.TargetName="border" Storyboard.TargetProperty="Background.Color" To="#464646" Duration="0"/>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Pressed">
                                    <Storyboard>
                                        <ColorAnimation Storyboard.TargetName="border" Storyboard.TargetProperty="Background.Color" To="#3774FF" Duration="0"/>
                                    </Storyboard>
                                </VisualState>
                            </VisualStateGroup>
                        </VisualStateManager.VisualStateGroups>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <Style x:Key="TitleBarButtonClose" TargetType="Button">
        <Setter Property="Cursor" Value="Hand"/>
        <Setter Property="HorizontalAlignment" Value="Right"/>
        <Setter Property="VerticalAlignment" Value="Center"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Button">
                    <Border x:Name="border" Background="#323232" Height="33" Width="33">
                        <ContentPresenter VerticalAlignment="Center" HorizontalAlignment="Center" Width="15" Height="15"></ContentPresenter>
                        <VisualStateManager.VisualStateGroups>
                            <VisualStateGroup x:Name="CommonStates">
                                <VisualStateGroup.Transitions>
                                    <VisualTransition GeneratedDuration="0:0:.1"/>
                                </VisualStateGroup.Transitions>
                                <VisualState x:Name="Normal"/>
                                <VisualState x:Name="MouseOver">
                                    <Storyboard>
                                        <ColorAnimation Storyboard.TargetName="border" Storyboard.TargetProperty="Background.Color" To="Firebrick" Duration="0"/>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Pressed">
                                    <Storyboard>
                                        <ColorAnimation Storyboard.TargetName="border" Storyboard.TargetProperty="Background.Color" To="#781414" Duration="0"/>
                                    </Storyboard>
                                </VisualState>
                            </VisualStateGroup>
                        </VisualStateManager.VisualStateGroups>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <!--End - Title Bar-->

    <!--Welcome Page-->
    <Style x:Key="UserArea" TargetType="Grid">
        <Setter Property="HorizontalAlignment" Value="Center"/>
        <Setter Property="VerticalAlignment" Value="Center"/>
    </Style>
    <Style x:Key="Label1" TargetType="Label">
        <Setter Property="FontSize" Value="20"/>
        <Setter Property="Foreground" Value="White"/>
        <Setter Property="Margin" Value="0, 0, 0, 25"/>
    </Style>
    <Style x:Key="Button1" TargetType="Button">
        <Setter Property="Width" Value="Auto"/>
        <Setter Property="VerticalAlignment" Value="Center"/>
        <Setter Property="HorizontalAlignment" Value="Center"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Button">
                    <Border x:Name="border" Background="#323232" CornerRadius="16" BorderBrush="#505050" BorderThickness="1" Padding="15, 6">
                        <ContentPresenter x:Name="content" HorizontalAlignment="Center" VerticalAlignment="Center">
                            <TextBlock.Foreground>
                                <SolidColorBrush Color="#7D7D7D"/>
                            </TextBlock.Foreground>
                            <TextBlock.FontSize>14</TextBlock.FontSize>
                        </ContentPresenter>
                        <VisualStateManager.VisualStateGroups>
                            <VisualStateGroup x:Name="CommonStates">
                                <VisualStateGroup.Transitions>
                                    <VisualTransition GeneratedDuration="0:0:0.15"/>
                                </VisualStateGroup.Transitions>
                                <VisualState x:Name="Normal"/>
                                <VisualState x:Name="MouseOver">
                                    <Storyboard>
                                        <ColorAnimation Storyboard.TargetName="border" Storyboard.TargetProperty="Background.Color" To="#3C3C3C" Duration="0"/>
                                        <ColorAnimation Storyboard.TargetName="content" Storyboard.TargetProperty="(TextBlock.Foreground).Color" To="White" Duration="0"/>
                                        <ColorAnimation Storyboard.TargetName="border" Storyboard.TargetProperty="BorderBrush.Color" To="#C8C8C8" Duration="0"/>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Pressed">
                                    <Storyboard>
                                        <ColorAnimation Storyboard.TargetName="border" Storyboard.TargetProperty="Background.Color" To="#282828" Duration="0"/>
                                        <ColorAnimation Storyboard.TargetName="content" Storyboard.TargetProperty="(TextBlock.Foreground).Color" To="White" Duration="0"/>
                                        <ColorAnimation Storyboard.TargetName="border" Storyboard.TargetProperty="BorderBrush.Color" To="#C8C8C8" Duration="0"/>
                                    </Storyboard>
                                </VisualState>
                            </VisualStateGroup>
                        </VisualStateManager.VisualStateGroups>
                    </Border>

                    <ControlTemplate.Triggers>
                        <Trigger Property="IsEnabled" Value="False">
                            <Setter TargetName="border" Property="Opacity" Value=".25"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <!--End - Welcome Page-->
</Application.Resources>
</Application>
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Pet*_*iho 5

通过设计（出于什么原因，我不知道），当您拥有WindowStyle="None"并最大化窗口时，它将超出屏幕的实际边缘，在所有面上延伸几个像素。

在您的代码中，您将窗口的实际大小限制为工作区的确切尺寸。由于窗口的最大化仍将窗口的左上角放在工作区域左上角的上方和左下角几个像素，因此窗口的可见部分必定小于作品的整个宽度区域，因此右侧和底部的裸露区域。

正如评论者Evk所指出的，通过消除窗口的大小限制（您可以根据需要仅在最大化窗口时执行此操作），窗口可以扩展到WPF所需的完整大小，从而确保完整覆盖工作区域。

在后续评论中，尚不清楚您是否确实希望覆盖任务栏。无论哪种情况，您都可以发现这些链接对于满足这方面的特定需求很有用：
使用WindowState最大化窗口问题（应用程序将隐藏Windows任务栏
）考虑Taskbar最大化窗口（WindowStyle = None）

或者，您仍然可以设置大小限制，但要考虑到WPF在最大化窗口时坚持的附加像素裕度，将尺寸设置为大于所需的尺寸，以使没有暴露区域。

对于它的价值，这是一个简化的代码示例，仅重点关注此处的特定行为：

<Window x:Class="TestSO39578992MaximizeBorderless.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:p="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:TestSO39578992MaximizeBorderless"
        mc:Ignorable="d" Background="Yellow" 
        WindowStyle="None" AllowsTransparency="True"
        Title="MainWindow" Height="350" Width="525">
  <Window.Style>
    <p:Style TargetType="Window">
      <Setter Property="WindowState" Value="Normal"/>
      <!-- Uncomment "Topmost" setters to experiment with its effect on the task bar visibility -->
      <!--<Setter Property="Topmost" Value="False"/>-->
      <p:Style.Triggers>
        <DataTrigger Binding="{Binding IsChecked, ElementName=checkBox1}" Value="True">
          <Setter Property="WindowState" Value="Maximized"/>
          <!--<Setter Property="Topmost" Value="True"/>-->
        </DataTrigger>
      </p:Style.Triggers>
    </p:Style>
  </Window.Style>
  <!-- set the margin here, to account for the extra space WPF is adding -->
  <!-- <Grid Margin="6"> -->
  <Grid>
    <Grid.ColumnDefinitions>
      <ColumnDefinition/>
      <ColumnDefinition/>
    </Grid.ColumnDefinitions>
    <Grid.RowDefinitions>
      <RowDefinition/>
      <RowDefinition/>
    </Grid.RowDefinitions>
    <CheckBox x:Name="checkBox1" Content="Maximized" HorizontalAlignment="Left" VerticalAlignment="Top"/>
    <TextBlock Text="Upper Right" Grid.Column="1" HorizontalAlignment="Right" VerticalAlignment="Top"/>
    <TextBlock Text="Lower Left" Grid.Row="1" HorizontalAlignment="Left" VerticalAlignment="Bottom"/>
    <TextBlock Text="Lower Right" Grid.Row="1" HorizontalAlignment="Right" VerticalAlignment="Bottom" Grid.Column="1"/>
  </Grid>
</Window>
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而且当然：

public partial class MainWindow : Window
{
    public MainWindow()
    {
        this.MaxHeight = SystemParameters.WorkArea.Height;
        this.MaxWidth = SystemParameters.WorkArea.Width;

        // Compensate for the extra space WPF adds by increasing the max width and height here
        //this.MaxHeight = SystemParameters.WorkArea.Height + 12;
        //this.MaxWidth = SystemParameters.WorkArea.Width + 12;

        InitializeComponent();
    }
}
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我TextBlock在所有四个角都包括了元素，以使查看窗口大小如何受各种属性值影响变得更加容易。

小智 5

我有同样的问题，但通过转动窗口调整大小 

Me.ResizeMode = ResizeMode.NoResize
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将窗口状态更改为最大化后，消除了该问题

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WPF:使用WindowState问题最大化窗口(应用程序将隐藏窗口任务栏) 17
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