WPF无边界窗口问题: Aero Snap &最大化
WPF无边界窗口问题: Aero Snap &最大化
提问于 2012-11-16 18:54:03
通过在XAML中设置以下窗口属性，我创建了一个无边界的WPF窗口：
... WindowStyle="None" AllowsTransparency="True" ...引起了许多问题：
1)已解决：不再具有任何内置的调整大小的功能。
2)解决：它不再具有任何内置的拖动功能。
3)解析:没有顶部工具栏的不再具有最小化/最大化/恢复/关闭按钮
4)解决：通过气动抓取或设置WindowState来最大限度地防止它被打开。
5)通过气动抓取或设置WindowState最大化将使用整个屏幕作为边界，重叠窗口工具栏。
6)通过空中抓拍或设置WindowState最大化，似乎包括一个-7的边距，使窗口的每一边的7个像素在窗口的边缘以外。
1-3通过制作xaml窗口模板来解决.我使用不可见矩形作为句柄区域，后面的一些代码通过重写OnApplyTemplate()应用于通过user32.dll SendMessage(.)附加功能。用于调整大小/移动/最小化/最大化/恢复/关闭。
我找到了#4 这里的答案
我尝试通过WndProc拦截最大化消息并手动设置大小/位置来解决5-6问题，但这存在将RestoreRegion覆盖到最大化大小/位置的问题，从而消除了恢复窗口的能力。
真正奇怪的是，调整窗口从顶部的边框到屏幕的顶部触发空气全高度快照只是很好，没有任何问题。
所以，我已经走了很长一段路，但是5-6仍然是个问题.是否有手动指定最大化区域的方法？或者，是否有一种在不影响恢复区属性的情况下设置窗口大小的方法？
回答 5
Stack Overflow用户
发布于 2018-02-05 15:33:26
我只是亲自经历了这整件事。这是一个真正的杂务，因为你必须手动说明这么多。有趣的是，这些天我们把很多东西当作理所当然的事，用一些简单的东西，比如一个基本的窗口是如何运作的。但是，看看我提供的这个示例代码，就可以很好地说明这个问题到底涉及了多少。
我希望这能帮上忙，因为我自己花了一点时间才来到这里。
MainWindow.Xaml
<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"
Background="Transparent"
WindowStartupLocation="CenterScreen"
ResizeMode="CanResizeWithGrip"
AllowsTransparency="True"
WindowStyle="None"
mc:Ignorable="d"
Title="Test Window Behavior" Height="768" Width="1024" StateChanged="Window_StateChanged" PreviewMouseLeftButtonDown="Window_PreviewMouseLeftButtonDown">
<Grid>
<DockPanel Grid.Column="1" Grid.Row="1">
<DockPanel x:Name="titleBar" Background="White" DockPanel.Dock="Top">
<Rectangle Width="32" Height="32" DockPanel.Dock="Left" Fill="Red" Margin="2"/>
<StackPanel Orientation="Horizontal" DockPanel.Dock="Right" Margin="2">
<!-- Minimize Button -->
<Border Width="24" Height="24" Margin="2" HorizontalAlignment="Right" MouseLeftButtonUp="OnMinimizeWindow" Grid.Column="2">
<Border.Style>
<Style TargetType="Border">
<Setter Property="Background" Value="Transparent" />
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="#FFD0D0D0" />
</Trigger>
</Style.Triggers>
</Style>
</Border.Style>
<TextBlock FontSize="14" HorizontalAlignment="Center" VerticalAlignment="Center" Text="0" FontFamily="Webdings" />
</Border>
<!-- Maximize Button -->
<Border Width="24" Height="24" Margin="2" HorizontalAlignment="Right" MouseLeftButtonUp="OnMaximizeWindow" Grid.Column="3">
<Border.Style>
<Style TargetType="Border">
<Setter Property="Background" Value="Transparent" />
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="#FFD0D0D0" />
</Trigger>
</Style.Triggers>
</Style>
</Border.Style>
<TextBlock x:Name="IsMaximized" FontSize="14" HorizontalAlignment="Center" VerticalAlignment="Center" FontFamily="Webdings">
<TextBlock.Style>
<Style TargetType="TextBlock">
<Setter Property="Text" Value="1" />
<Style.Triggers>
<DataTrigger Binding="{Binding Path=InternalWindowState, RelativeSource={RelativeSource FindAncestor, AncestorType=Window}}" Value="Maximized">
<Setter Property="Text" Value="2" />
</DataTrigger>
</Style.Triggers>
</Style>
</TextBlock.Style>
</TextBlock>
</Border>
<!-- Close Button -->
<Border Width="24" Height="24" Margin="2" HorizontalAlignment="Right" MouseLeftButtonUp="OnCloseWindow" Grid.Column="4">
<Border.Style>
<Style TargetType="Border">
<Setter Property="Background" Value="Transparent" />
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="Red" />
</Trigger>
</Style.Triggers>
</Style>
</Border.Style>
<TextBlock FontSize="14" HorizontalAlignment="Center" VerticalAlignment="Center" Text="r" FontFamily="Webdings" />
</Border>
</StackPanel>
<Label MouseLeftButtonDown="OnDragMoveWindow" MouseDoubleClick="OnMaximizeWindow" Margin="8 0 0 0" FontSize="12" VerticalContentAlignment="Center" Content="{Binding Path=Title, RelativeSource={RelativeSource FindAncestor, AncestorType=Window}, FallbackValue='Main Window'}" />
</DockPanel>
<Grid Background="White" DockPanel.Dock="Bottom" Height="32">
<Label VerticalContentAlignment="Center" Content="Statusbar Text Goes Here ..." />
</Grid>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="100" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="100" />
<RowDefinition Height="*" />
<RowDefinition Height="100" />
</Grid.RowDefinitions>
<!-- Top 3 -->
<Border Background="Gray" Grid.Row="0" Grid.Column="0" />
<Border Background="Gray" Grid.Row="0" Grid.Column="1" BorderBrush="Black" BorderThickness="0 0 0 1" />
<Border Background="Gray" Grid.Row="0" Grid.Column="2" />
<!-- Middle 2 -->
<Border Background="Gray" Grid.Row="1" Grid.Column="0" BorderBrush="Black" BorderThickness="0 0 1 0" />
<Border Background="Gray" Grid.Row="1" Grid.Column="2" BorderBrush="Black" BorderThickness="1 0 0 0" />
<!-- Bottom 3 -->
<Border Background="Gray" Grid.Row="2" Grid.Column="0" />
<Border Background="Gray" Grid.Row="2" Grid.Column="1" BorderBrush="Black" BorderThickness="0 1 0 0" />
<Border Background="Gray" Grid.Row="2" Grid.Column="2" />
</Grid>
</DockPanel>
<Grid>
<Grid.Resources>
<Style TargetType="Thumb">
<Style.Setters>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Border Background="Transparent" />
</ControlTemplate>
</Setter.Value>
</Setter>
</Style.Setters>
</Style>
</Grid.Resources>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="25" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="25" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="25" />
<RowDefinition Height="*" />
<RowDefinition Height="25" />
</Grid.RowDefinitions>
<!-- Top/Left -->
<DockPanel LastChildFill="False" Grid.Row="0" Grid.Column="0">
<Thumb DockPanel.Dock="Left" Width="4" Cursor="SizeNWSE" Tag="0" DragDelta="Thumb_DragDelta" />
<Thumb DockPanel.Dock="Top" Height="4" Cursor="SizeNWSE" Tag="0" DragDelta="Thumb_DragDelta" />
</DockPanel>
<!-- Top/Right -->
<DockPanel LastChildFill="False" Grid.Row="0" Grid.Column="2">
<Thumb DockPanel.Dock="Right" Width="4" Cursor="SizeNESW" Tag="0" DragDelta="Thumb_DragDelta" />
<Thumb DockPanel.Dock="Top" Height="4" Cursor="SizeNESW" Tag="0" DragDelta="Thumb_DragDelta" />
</DockPanel>
<!-- Bottom/Left -->
<DockPanel LastChildFill="False" Grid.Row="2" Grid.Column="0">
<Thumb DockPanel.Dock="Left" Width="4" Cursor="SizeNESW" Tag="1" DragDelta="Thumb_DragDelta" />
<Thumb DockPanel.Dock="Bottom" Height="4" Cursor="SizeNESW" Tag="1" DragDelta="Thumb_DragDelta" />
</DockPanel>
<!-- Bottom/Right -->
<DockPanel LastChildFill="False" Grid.Row="2" Grid.Column="2">
<Thumb DockPanel.Dock="Right" Width="4" Cursor="SizeNWSE" Tag="1" DragDelta="Thumb_DragDelta" />
<Thumb DockPanel.Dock="Bottom" Height="4" Cursor="SizeNWSE" Tag="1" DragDelta="Thumb_DragDelta" />
</DockPanel>
<!-- Left -->
<Thumb Grid.Row="1" Grid.Column="0" Width="4" Cursor="SizeWE" Tag="0" HorizontalAlignment="Left" DragDelta="Thumb_DragDelta" />
<!-- Top -->
<Thumb Grid.Row="0" Grid.Column="1" Height="4" Cursor="SizeNS" Tag="0" VerticalAlignment="Top" DragDelta="Thumb_DragDelta" />
<!-- Right -->
<Thumb Grid.Row="1" Grid.Column="2" Width="4" Cursor="SizeWE" Tag="1" HorizontalAlignment="Right" DragDelta="Thumb_DragDelta" />
<!-- Bottom -->
<Thumb Grid.Row="2" Grid.Column="1" Height="4" Cursor="SizeNS" Tag="1" VerticalAlignment="Bottom" DragDelta="Thumb_DragDelta" />
</Grid>
</Grid>
MainWindow.xaml.cs
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace WpfApp1
{
public partial class MainWindow : Window
{
#region --- Declarations ---
private Rect _location { get; set; }
#endregion
#region --- Constructors ---
public MainWindow()
{
InitializeComponent();
}
#endregion
#region --- Properties ---
private Rect DesktopArea
{
get
{
var c = System.Windows.Forms.Cursor.Position;
var s = System.Windows.Forms.Screen.FromPoint(c);
var a = s.WorkingArea;
return new Rect(a.Left, a.Top, a.Width, a.Height);
}
}
#endregion
#region --- Dependency Properties ---
public static readonly DependencyProperty InternalWindowStateProperty = DependencyProperty.Register("InternalWindowState", typeof(WindowState), typeof(MainWindow), new PropertyMetadata(WindowState.Normal, new PropertyChangedCallback(OnInternalWindowStateChanged)));
public WindowState InternalWindowState
{
get { return (WindowState)GetValue(InternalWindowStateProperty); }
set { SetValue(InternalWindowStateProperty, value); }
}
private static void OnInternalWindowStateChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
MainWindow instance = (MainWindow)d;
instance.SetInternalWindowState((WindowState)e.NewValue);
}
#endregion
#region --- Private Methods ---
private void StoreLocation()
{
_location = new Rect(this.Left, this.Top, this.Width, this.Height);
}
private void RestoreLocation()
{
this.Width = _location.Width;
this.Height = _location.Height;
this.Top = _location.Top >= 0 ? _location.Top : 0;
this.Left = _location.Left;
}
private void SetMaximizedState()
{
this.Width = DesktopArea.Width;
this.Height = DesktopArea.Height;
this.Top = DesktopArea.Top;
this.Left = DesktopArea.Left;
}
private void SetInternalWindowState(WindowState state)
{
InternalWindowState = state;
switch (InternalWindowState)
{
case WindowState.Normal:
this.WindowState = WindowState.Normal;
RestoreLocation();
break;
case WindowState.Maximized:
this.WindowState = WindowState.Normal;
SetMaximizedState();
break;
case WindowState.Minimized:
this.WindowState = WindowState.Minimized;
break;
}
}
#endregion
#region --- Sizing Routines ---
private void Thumb_DragDelta(object sender, System.Windows.Controls.Primitives.DragDeltaEventArgs e)
{
Thumb thumb = (Thumb)sender;
int tag = Convert.ToInt32(thumb.Tag);
if (thumb.Cursor == Cursors.SizeWE) HandleSizeWE(tag, e);
if (thumb.Cursor == Cursors.SizeNS) HandleSizeNS(tag, e);
if (thumb.Cursor == Cursors.SizeNESW) HandleSizeNESW(tag, e);
if (thumb.Cursor == Cursors.SizeNWSE) HandleSizeNWSE(tag, e);
}
private void HandleSizeNWSE(int tag, DragDeltaEventArgs e)
{
if (tag == 0)
{
this.Top += e.VerticalChange;
this.Height -= e.VerticalChange;
this.Left += e.HorizontalChange;
this.Width -= e.HorizontalChange;
}
else
{
this.Width += e.HorizontalChange;
this.Height += e.VerticalChange;
}
}
private void HandleSizeNESW(int tag, DragDeltaEventArgs e)
{
if (tag == 0)
{
this.Top += e.VerticalChange;
this.Height -= e.VerticalChange;
this.Width += e.HorizontalChange;
}
else
{
this.Left += e.HorizontalChange;
this.Width -= e.HorizontalChange;
this.Height += e.VerticalChange;
}
}
private void HandleSizeNS(int tag, DragDeltaEventArgs e)
{
if (tag == 0)
{
this.Top += e.VerticalChange;
this.Height -= e.VerticalChange;
}
else
this.Height += e.VerticalChange;
}
private void HandleSizeWE(int tag, DragDeltaEventArgs e)
{
if (tag == 0)
{
this.Left += e.HorizontalChange;
this.Width -= e.HorizontalChange;
}
else
this.Width += e.HorizontalChange;
}
#endregion
#region --- Event Handlers ---
private void OnDragMoveWindow(Object sender, MouseButtonEventArgs e)
{
if (this.InternalWindowState == WindowState.Maximized)
{
var c = System.Windows.Forms.Cursor.Position;
this.InternalWindowState = WindowState.Normal;
this.Height = _location.Height;
this.Width = _location.Width;
this.Top = c.Y - (titleBar.ActualHeight / 2);
this.Left = c.X - (_location.Width / 2);
}
this.DragMove();
}
private void OnMaximizeWindow(Object sender, MouseButtonEventArgs e)
{
if (this.InternalWindowState == WindowState.Maximized)
this.InternalWindowState = WindowState.Normal;
else
this.InternalWindowState = WindowState.Maximized;
}
private void OnMinimizeWindow(Object sender, MouseButtonEventArgs e)
{
this.InternalWindowState = WindowState.Minimized;
}
private void OnCloseWindow(Object sender, MouseButtonEventArgs e)
{
Application.Current.Shutdown();
}
private void Window_StateChanged(object sender, EventArgs e)
{
if (this.WindowState == WindowState.Maximized)
{
this.InternalWindowState = WindowState.Maximized;
}
}
private void Window_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (this.InternalWindowState != WindowState.Maximized)
StoreLocation();
}
#endregion
}
}Stack Overflow用户
发布于 2015-07-25 19:34:09
对于第5点，请使用以下命令：
public WindowName() // Constructor for your window
{
this.MaxHeight = SystemParameters.WorkArea.Height;
this.MaxWidth = SystemParameters.WorkArea.Width;
}这将确保窗口在最大化时不会与任务栏重叠。
Stack Overflow用户
发布于 2013-06-08 02:45:07
您可以通过处理WM_GETMINMAXINFO Win32消息来指定最大化区域。代码这里展示了如何做到这一点。它将解决#5和#6的问题。
请注意，有一些事情我会采取不同的做法，比如在IntPtr.Zero中返回System.IntPtr而不是(System.IntPtr)0，并使MONITOR_DEFAULTTONEAREST成为常量。但这只是编码风格的改变，并不影响最终结果。
还要确保注意在SourceInitialized事件(而不是OnApplyTemplate )期间挂起SourceInitialized的更新。那是个更好的地方。如果您正在实现从窗口派生的类，那么另一个选项是重写OnSourceInitialized来挂钩WindowProc，而不是附加到事件上。我通常就是这么做的。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/13422666
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