Прозрачность окон в wpf?

Question

[crescent]

Никак не получается сделать полупрозрачное окно в wpf

<Window x:Class="Gui.TestWindow"
        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:Gui"
        mc:Ignorable="d"
        Opacity="0.5" >

    <StackPanel>

        <Button Width="100" Height="40">AAA</Button>

    </StackPanel>
    
</Window>

Как сделать правильно?

Answer 1

[Space Purr]

Добавьте свойство AllowTransparency = "True" и WindowsStyle = "None"

<Window x:Class="WpfApp1.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:WpfApp1"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800" Opacity="0.5" AllowsTransparency="True" 
        WindowStyle="None">

Comments

[crescent]

хоть прозрачная и становится - но тут приходиться ставить WindowStyle="None" - а это окно убирает(

[Space Purr]

crescent, ну на это условия не было. Но вы можете реализовать окно сами. Например вот так.

<Window x:Class="WpfApp1.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:WpfApp1"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800" Opacity="0.5" AllowsTransparency="True" 
        WindowStyle="None" ResizeMode="CanResizeWithGrip">

    <Window.Resources>
        <Style x:Key="MaxButtonStyle" TargetType="{x:Type Button}">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type Button}">
                        <Border  BorderBrush="#535666" BorderThickness="2,5,2,2" Width="20" Background="White" Margin="2"/>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
        <Style x:Key="MinButtonStyle" TargetType="{x:Type Button}">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type Button}">
                        <Border  Width="20" Height="7"  BorderBrush="#535666" BorderThickness="2" Background="#FFFFFF"/>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <Style x:Key="CloseButtonStyle" TargetType="{x:Type Button}">
            <Setter Property="FontWeight" Value="Bold"/>
            <Setter Property="Foreground" Value="#535666"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type Button}">
                        <Border  Width="20"  BorderBrush="#535666"  Background="#FFFFFF" Margin="2">
                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Window.Resources>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="20"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>

        <Grid Grid.Row="0">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*"/>
                <ColumnDefinition Width="90"/>
            </Grid.ColumnDefinitions>

            <Border Grid.ColumnSpan="2" MouseLeftButtonDown="Border_MouseLeftButtonDown" Background="Black">
                
            </Border>
            <StackPanel Grid.Column="1" Orientation="Horizontal">
                <Button Width="30" Height="20" Style="{StaticResource MinButtonStyle}" Click="Button_Click"/>
                <Button Width="30" Height="20" Style="{StaticResource MaxButtonStyle}" Click="Button_Click_1"/>
                <Button Width="30" Height="20" Style="{StaticResource CloseButtonStyle}" Content="X" Click="Button_Click_2"/>
            </StackPanel>
        </Grid>
    </Grid>
</Window>

CodeBehind

using System.Windows;
using System.Windows.Input;

namespace WpfApp1
{
    /// <summary>
    /// Логика взаимодействия для MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public double LastWidth { get; set; }
        public double LastHeight { get; set; }

        public MainWindow()
        {
            InitializeComponent();
        }

        private void Border_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            DragMove();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            WindowState = WindowState.Minimized;
        }

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            if (WindowState != WindowState.Maximized)
                WindowState = WindowState.Maximized;
            else
                WindowState = WindowState.Normal;
        }

        private void Button_Click_2(object sender, RoutedEventArgs e)
        {
            Close();
        }
    }
}

[Space Purr]

crescent,

[crescent]

спасибо большок))