WPF / XAML：如何调整没有边框的窗口大小？

我正在使用没有边框的窗口,并自己绘制Chrome.我想以一种典型的方式调整窗口的大小,并定义了一个3×3网格,其中心是内容,外部单元构成需要不同处理(TopLeft / TopMiddle / TopRight …等)的各个区域,如光标.最大化,最小化,移动等都是直接的,但是我可以使用一些指针根据光标所在的单元格在各个方向进行调整大小.

这看起来很紧.最小/最大宽度和高度以及可变边框宽度.我知道的唯一的问题是当光标移动快速,并且大小在20像素内的最小值时,由于刷新率,它有些粘滞.不是一个很大的交易,但我会排序.

alt text http://cartesia.pbworks.com/f/1265489984/Resize.png

我似乎无法让Window标签正常显示…(只需拿出撇号就可以了.)任何人有什么想法？

XAML

<'Window x:Class="Article_1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:sys="clr-namespace:System;assembly=mscorlib"
    Title="Article_1_Resizing"
    Background="Transparent" AllowsTransparency="True"
        WindowStyle="None" WindowStartupLocation="CenterScreen"
    MinHeight="100" Height="400" MaxHeight="600"
    MinWidth="100" Width="400" MaxWidth="800">

 <Window.Resources>

  <SolidColorBrush x:Key="Brush_ChromeBackground" Color="#FFC8D1E0"/>
  <SolidColorBrush x:Key="Brush_ChromeBorder" Color="#FFA0A0A0"/>

  <sys:Double x:Key="Chrome_BorderWidth">5</sys:Double>

 </Window.Resources>

 <Border x:Name="Border_Chrome"
     BorderBrush="{StaticResource Brush_ChromeBorder}" BorderThickness="1,1,1"
     CornerRadius="2,2,2"
     Width="Auto">

  <Grid x:Name="Grid" ShowGridLines="False">

   <Grid.RowDefinitions>
    <RowDefinition x:Name="row_Top" Height="Auto"/>
    <RowDefinition x:Name="row_Middle" Height="*"/>
    <RowDefinition x:Name="row_Bottom" Height="Auto"/>
   </Grid.RowDefinitions>

   <Grid.ColumnDefinitions>
    <ColumnDefinition x:Name="col_Left" Width="Auto"/>
    <ColumnDefinition x:Name="col_Middle" Width="*"/>
    <ColumnDefinition x:Name="col_Right" Width="Auto"/>
   </Grid.ColumnDefinitions>

   <!-- Top Row -->
   <Rectangle x:Name="Rectangle_TopLeft"
         Grid.Row="0" Grid.Column="0"
         Width="{StaticResource Chrome_BorderWidth}" Height="{StaticResource Chrome_BorderWidth}"
         Fill="{StaticResource Brush_ChromeBackground}"
         Cursor="SizeNWSE"
         MouseLeftButtonDown="Resize_Begin" MouseLeftButtonUp="Resize_End"
         MouseMove="Resize"/>

   <Rectangle x:Name="Rectangle_TopMiddle"
         Grid.Row="0" Grid.Column="1"
         Height="{StaticResource Chrome_BorderWidth}"
         Fill="{StaticResource Brush_ChromeBackground}"
         Cursor="SizeNS"
         MouseLeftButtonDown="Resize_Begin" MouseLeftButtonUp="Resize_End"
         MouseMove="Resize"/>

   <Rectangle x:Name="Rectangle_TopRight"
         Grid.Row="0" Grid.Column="2"
         Width="{StaticResource Chrome_BorderWidth}" Height="{StaticResource Chrome_BorderWidth}"
         Fill="{StaticResource Brush_ChromeBackground}"
         Cursor="SizeNESW"
         MouseLeftButtonDown="Resize_Begin" MouseLeftButtonUp="Resize_End"
         MouseMove="Resize"/>


   <!-- Middle Row -->
   <Rectangle x:Name="Rectangle_MiddleLeft"
         Grid.Row="1" Grid.Column="0"
         Width="{StaticResource Chrome_BorderWidth}"
         Fill="{StaticResource Brush_ChromeBackground}"
         Cursor="SizeWE"
         MouseLeftButtonDown="Resize_Begin" MouseLeftButtonUp="Resize_End"
         MouseMove="Resize"/>

   <!-- Content -->
   <Label Content="Mouse Down to Move - Double Click to Close"
       Grid.Row="1" Grid.Column="1"
       Background="White" Foreground="Black"
       HorizontalAlignment="Stretch" HorizontalContentAlignment="Center"
       VerticalAlignment="Stretch" VerticalContentAlignment="Center"
       MouseDoubleClick="_Close"
       MouseLeftButtonDown="Move"/>

   <Rectangle x:Name="Rectangle_MiddleRight"
         Grid.Row="1" Grid.Column="2"
         Width="{StaticResource Chrome_BorderWidth}"
         Fill="{StaticResource Brush_ChromeBackground}"
         Cursor="SizeWE"
         MouseLeftButtonDown="Resize_Begin" MouseLeftButtonUp="Resize_End"
         MouseMove="Resize"/>


   <!-- Bottom Row -->
   <Rectangle x:Name="Rectangle_BottomLeft"
         Grid.Row="2" Grid.Column="0"
         Width="{StaticResource Chrome_BorderWidth}" Height="{StaticResource Chrome_BorderWidth}"
         Fill="{StaticResource Brush_ChromeBackground}"
         Cursor="SizeNESW"
         MouseLeftButtonDown="Resize_Begin" MouseLeftButtonUp="Resize_End"
         MouseMove="Resize"/>

   <Rectangle x:Name="Rectangle_BottomMiddle"
         Grid.Row="2" Grid.Column="1"
         Height="{StaticResource Chrome_BorderWidth}"
         Fill="{StaticResource Brush_ChromeBackground}"
         Cursor="SizeNS"
         MouseLeftButtonDown="Resize_Begin" MouseLeftButtonUp="Resize_End"
         MouseMove="Resize"/>

   <Rectangle x:Name="Rectangle_BottomRight"
         Grid.Row="2" Grid.Column="2"
         Width="{StaticResource Chrome_BorderWidth}" Height="{StaticResource Chrome_BorderWidth}"
         Fill="{StaticResource Brush_ChromeBackground}"
         Cursor="SizeNWSE"
         MouseLeftButtonDown="Resize_Begin" MouseLeftButtonUp="Resize_End"
         MouseMove="Resize"/>
  </Grid>

 </Border>

</Window>

代码背后

Partial Public Class Article_1

  Public Sub New()

    InitializeComponent()

    Initialize_Sizes

  End Sub

  Private isResizing as Boolean = False

  Private Const CURSOR_OFFSET_SMALL As Double = 3
  Private Const CURSOR_OFFSET_LARGE As Double = 5

  Private _x As Double = 0
  Private _Y As Double = 0

  Private Sub Initialize_Sizes

    Dim _MinWidth As Double = Rectangle_MiddleLeft.Width + _
                              Rectangle_BottomRight.Width + _
                              border_Chrome.BorderThickness.Left + _
                              border_Chrome.BorderThickness.Right + 1

    If MinWidth < _MinWidth then _
       MinWidth = _MinWidth

    Dim _MinHeight As Double = Rectangle_TopMiddle.Height + _
                               Rectangle_BottomMiddle.Height + _
                               border_Chrome.BorderThickness.top + _
                               border_Chrome.BorderThickness.Bottom + 1

    If MinHeight < _MinHeight then _
       MinHeight = _MinHeight

  End Sub

  Private sub Resize_Begin(sender as object,_
                           e As MouseEventArgs) 

    isResizing = True

    DirectCast(sender,Rectangle).CaptureMouse

  End Sub

  Private sub Resize_End(sender as object,_
                         e As MouseEventArgs)

    isResizing = False

    DirectCast(sender,Rectangle).ReleaseMouseCapture

  End Sub

  Private Sub Resize(sender As Object,_
                     e As MouseEventArgs)

    If isResizing = False then Exit Sub

      _x = e.GetPosition(me).x
      _y = e.GetPosition(me).Y 

      Select Case DirectCast(sender,Rectangle).Name

        Case "Rectangle_TopLeft" :      Resize_Width_Left
                                        Resize_Height_Top
        Case "Rectangle_TopMiddle" :    Resize_Height_Top
        Case "Rectangle_TopRight" :     Resize_Width_Right
                                        Resize_Height_Top

        Case "Rectangle_MiddleLeft" :   Resize_Width_Left
        Case "Rectangle_MiddleRight" :  Resize_Width_Right


        Case "Rectangle_BottomLeft" :   Resize_Width_Left
                                        Resize_Height_Bottom
        Case "Rectangle_BottomMiddle" : Resize_Height_Bottom
        Case "Rectangle_BottomRight" :  Resize_Width_Right
                                        Resize_Height_Bottom

        Case else : MessageBox.Show("Error in Resize")

      End Select

  End Sub

  Private Sub Resize_Width_Left

    _x -= CURSOR_OFFSET_SMALL

    If Width - _x >= MinWidth Then        
      If Width - _x <= MaxWidth then

        Width -= _x
        Left += _x

      End If
    End If

  End Sub

  Private Sub Resize_Width_Right

    _x += CURSOR_OFFSET_LARGE

    Select Case _x

      Case Is < MinWidth : width = MinWidth
      Case Is > MaxWidth : Width = MaxWidth

      Case Else : Width = _x

    End Select

  End Sub

  Private Sub Resize_Height_Top

    _y -= CURSOR_OFFSET_SMALL

    If Height - _y >= MinHeight Then        
      If Height - _y <= MaxHeight then

        Height -= _y
        Top += _y

      End If
    End If

  End Sub

  Private Sub Resize_Height_Bottom

    _y += CURSOR_OFFSET_SMALL

    Select Case _y

      Case Is < MinHeight : Height = MinHeight
      Case Is > MaxHeight : Height = MaxHeight

      Case Else : Height = _y

    End Select

  End Sub

  Private Sub Move(ByVal sender As Object,_
                    ByVal e As System.Windows.Input.MouseButtonEventArgs)

    Dim curs As Cursor = Cursor

    Cursor = Cursors.SizeAll

    DragMove()

    Cursor = Curs

  End Sub

  Private Sub _Close()

    Close

  End Sub

End Class

原文链接：https://www.f2er.com/windows/363867.html

WPF / XAML：如何调整没有边框的窗口大小？

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