WPF 窗口-阿里云开发者社区

原文: WPF 窗口

在WPF中，经常需要对窗口进行设置，下面讲讲常用的几个设置。

窗口样式

1、无边框窗口

无边框透明窗体设置

WindowStyle="None"--无边框，如果需要其它按钮，如缩小、放大、收缩、关闭按钮，可以自定义

AllowsTransparency="True"--只有设置了AllowsTransparency，才有1、窗体真正的隐藏边框2、背景透明有效

Background="Transparent"

窗口阴影设置

可以用Border的CornerRadius设置窗口四周圆角

设置窗口阴影--值得一提的是，如果直接用Window.Effect,效果会影响CornerRadius设置的圆角效果。

<Window.Effect>
<DropShadowEffect BlurRadius="30" Color="Gray" ShadowDepth="0" RenderingBias="Quality" ></DropShadowEffect>
</Window.Effect>

举例：

<Window x:Class="WpfApplication4.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"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525" WindowStartupLocation="CenterScreen" 
        AllowsTransparency="True" WindowStyle="None" Background="Transparent">
    <Grid>
        <Border CornerRadius="5" Background="Red"></Border>
    </Grid>
</Window>

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2、窗口按钮

当我们设置无边窗口时，也即是需要重新设置一套窗口的操作按钮。

按钮，可以用修改Button的Background或者修改Template,往其中设置图标或者直接用Path、Border、Rectangle等基础元素绘制。

然后添加简单的动画Animation

1) 方法1.下面是自定义的按钮Style，往其中传入图标路径即可

<Style TargetType="Button">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <Grid>
                            <Rectangle x:Name="T_Rectangle" Height="15" Width="15">
                                <Rectangle.Fill>
                                    <ImageBrush ImageSource="{Binding ImagesSource}"></ImageBrush>
                                </Rectangle.Fill>
                            </Rectangle>
                            <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalAlignment}" VerticalAlignment="{TemplateBinding VerticalAlignment}"></ContentPresenter>
                        </Grid>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsMouseOver" Value="True">
                                <Setter TargetName="T_Rectangle" Property="Height" Value="18"></Setter>
                                <Setter TargetName="T_Rectangle" Property="Width" Value="18"></Setter>
                            </Trigger>
                            <Trigger Property="IsPressed" Value="True">
                                <Setter TargetName="T_Rectangle" Property="Height" Value="20"></Setter>
                                <Setter TargetName="T_Rectangle" Property="Width" Value="20"></Setter>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

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2）方法2.直接用基础元素绘制

Path，通过Path来画线。当然一般水平、竖直也是可以用Rectangle/Border之类的替代

一些简单的线条图标用Path来做，还是很方便的。

<StackPanel Grid.Column="1" Orientation="Horizontal">
                    <Button x:Name="BtnMinimize" ToolTip="Minimize" Style="{StaticResource TitleBtnStyle}">
                        <Button.Template>
                            <ControlTemplate TargetType="Button">
                                <Border x:Name="T_Grid" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}">
                                    <Grid VerticalAlignment="Center" HorizontalAlignment="Center">
                                        <Path x:Name="T_Path" Data="M0,0 L8,0" Stroke="Black" StrokeThickness="1"></Path>
                                    </Grid>
                                </Border>
                                <ControlTemplate.Triggers>
                                    <Trigger SourceName="T_Grid" Property="IsMouseOver" Value="True">
                                        <Setter TargetName="T_Grid" Property="Background" Value="LightGray"></Setter>
                                    </Trigger>
                                    <Trigger Property="IsPressed" Value="True">
                                        <Setter TargetName="T_Grid" Property="Background" Value="#FFC1C1C1"></Setter>
                                        <Setter TargetName="T_Path" Property="Margin" Value="0,4,0,0"></Setter>
                                    </Trigger>
                                </ControlTemplate.Triggers>
                            </ControlTemplate>
                         </Button.Template>
                    </Button>
                    <Button x:Name="BtnMaximize" ToolTip="Maximize" Style="{StaticResource TitleBtnStyle}">
                        <Button.Template>
                            <ControlTemplate TargetType="Button">
                                <Border x:Name="T_Grid" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}">
                                    <Rectangle x:Name="T_Rect" Stroke="Black" StrokeThickness="0.5" Height="8" Margin="5,0" Width="8"></Rectangle>
                                </Border>
                                <ControlTemplate.Triggers>
                                    <Trigger Property="IsMouseOver" Value="True">
                                        <Setter TargetName="T_Grid" Property="Background" Value="LightGray"></Setter>
                                    </Trigger>
                                    <Trigger Property="IsPressed" Value="True">
                                        <Setter TargetName="T_Grid" Property="Background" Value="#FFC1C1C1"></Setter>
                                    </Trigger>
                                </ControlTemplate.Triggers>
                            </ControlTemplate>
                        </Button.Template>
                    </Button>
                    <Button x:Name="BtnRestore" ToolTip="Restore" Style="{StaticResource TitleBtnStyle}">
                        <Button.Template>
                            <ControlTemplate TargetType="Button">
                                <Border x:Name="T_Grid" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}">
                                    <Grid >
                                        <Rectangle Stroke="Black" StrokeThickness="0.5" Height="7" Width="7" Margin="2,0,0,2"></Rectangle>
                                        <Rectangle Stroke="Black" StrokeThickness="0.5" Height="7" Width="7" Fill="White" Margin="0,2,2,0"></Rectangle>
                                    </Grid>
                                 </Border>
                                <ControlTemplate.Triggers>
                                    <Trigger Property="IsMouseOver" Value="True">
                                        <Setter TargetName="T_Grid" Property="Background" Value="LightGray"></Setter>
                                    </Trigger>
                                    <Trigger Property="IsPressed" Value="True">
                                        <Setter TargetName="T_Grid" Property="Background" Value="#FFC1C1C1"></Setter>
                                    </Trigger>
                                </ControlTemplate.Triggers>
                            </ControlTemplate>
                        </Button.Template>
                    </Button>
                    <Button x:Name="BtnClose" ToolTip="Close" Style="{StaticResource TitleBtnStyle}" Click="BtnClose_OnClick">
                        <Button.Template>
                            <ControlTemplate TargetType="Button">
                                    <Border x:Name="T_Grid" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}">
                                        <Grid VerticalAlignment="Center" HorizontalAlignment="Center">
                                            <Path Data="M0,0 L8,8" Stroke="Black" StrokeThickness="1"></Path>
                                            <Path Data="M8,0 L0,8" Stroke="Black" StrokeThickness="1"></Path>
                                        </Grid>
                                    </Border>
                                <ControlTemplate.Triggers>
                                    <Trigger Property="IsMouseOver" Value="True">
                                        <Setter TargetName="T_Grid" Property="Background" Value="LightGray"></Setter>
                                    </Trigger>
                                    <Trigger Property="IsPressed" Value="True">
                                        <Setter TargetName="T_Grid" Property="Background" Value="#FFC1C1C1"></Setter>
                                    </Trigger>
                                </ControlTemplate.Triggers>
                            </ControlTemplate>
                        </Button.Template>
                    </Button>
                </StackPanel>

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3、窗口 resize 鼠标自由改变窗口大小（转）

覆写一个OnSourceInitialized方法，在其中添加一个委托

        //重写
        protected override void OnSourceInitialized(EventArgs e)
        {
            base.OnSourceInitialized(e);
            HwndSource hwndSource = PresentationSource.FromVisual(this) as HwndSource;
            if (hwndSource != null)
            {
                hwndSource.AddHook(new HwndSourceHook(WndProc));
            }
        }

        private const int WM_NCHITTEST = 0x0084;
        private Point mousePoint = new Point(); //鼠标坐标
        private const int ResizeBorderAGWidth = 12;//转角宽度 
        private const int ResizeBorderThickness = 4;//边框宽度
        /// <summary>
        /// 委托方法
        /// </summary>
        /// <param name="hwnd"></param>
        /// <param name="msg"></param>
        /// <param name="wParam"></param>
        /// <param name="lParam"></param>
        /// <param name="handled"></param>
        /// <returns></returns>
        protected virtual IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
        {
            switch (msg)
            {
                case WM_NCHITTEST:
                    mousePoint.X = (lParam.ToInt32() & 0xFFFF);
                    mousePoint.Y = (lParam.ToInt32() >> 16);
                    // 窗口左上角
                    if (mousePoint.Y - Top <= ResizeBorderAGWidth && mousePoint.X - Left <= ResizeBorderAGWidth)
                    {
                        handled = true;
                        return new IntPtr((int)HitTest.HTTOPLEFT);
                    }
                    // 窗口左下角　　
                    else if (ActualHeight + Top - mousePoint.Y <= ResizeBorderAGWidth && mousePoint.X - Left <= ResizeBorderAGWidth)
                    {
                        handled = true;
                        return new IntPtr((int)HitTest.HTBOTTOMLEFT);
                    }
                    // 窗口右上角
                    else if (mousePoint.Y - Top <= ResizeBorderAGWidth && ActualWidth + Left - mousePoint.X <= ResizeBorderAGWidth)
                    {
                        handled = true;
                        return new IntPtr((int)HitTest.HTTOPRIGHT);
                    }
                    // 窗口右下角
                    else if (ActualWidth + Left - mousePoint.X <= ResizeBorderAGWidth && ActualHeight + Top - mousePoint.Y <= ResizeBorderAGWidth)
                    {
                        handled = true;
                        return new IntPtr((int)HitTest.HTBOTTOMRIGHT);
                    }
                    // 窗口左侧
                    else if (mousePoint.X - Left <= ResizeBorderThickness)
                    {
                        handled = true;
                        return new IntPtr((int)HitTest.HTLEFT);
                    }
                    // 窗口右侧
                    else if (ActualWidth + Left - mousePoint.X <= ResizeBorderThickness)
                    {
                        handled = true;
                        return new IntPtr((int)HitTest.HTRIGHT);
                    }
                    // 窗口上方
                    else if (mousePoint.Y - Top <= ResizeBorderThickness)
                    {
                        handled = true;
                        return new IntPtr((int)HitTest.HTTOP);
                    }
                    // 窗口下方
                    else if (ActualHeight + Top - mousePoint.Y <= ResizeBorderThickness)
                    {
                        handled = true;
                        return new IntPtr((int)HitTest.HTBOTTOM);
                    }
                    else // 窗口移动
                    {
                        //handled = true;
                        //return new IntPtr((int)HitTest.HTCAPTION);
                        return IntPtr.Zero;
                    }
            }

            return IntPtr.Zero;
        }

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用到的枚举列表类：

public enum HitTest : int
    {
        HTERROR = -2,
        HTTRANSPARENT = -1,
        HTNOWHERE = 0,
        HTCLIENT = 1,
        HTCAPTION = 2,
        HTSYSMENU = 3,
        HTGROWBOX = 4,
        HTSIZE = HTGROWBOX,
        HTMENU = 5,
        HTHSCROLL = 6,
        HTVSCROLL = 7,
        HTMINBUTTON = 8,
        HTMAXBUTTON = 9,
        HTLEFT = 10,
        HTRIGHT = 11,
        HTTOP = 12,
        HTTOPLEFT = 13,
        HTTOPRIGHT = 14,
        HTBOTTOM = 15,
        HTBOTTOMLEFT = 16,
        HTBOTTOMRIGHT = 17,
        HTBORDER = 18,
        HTREDUCE = HTMINBUTTON,
        HTZOOM = HTMAXBUTTON,
        HTSIZEFIRST = HTLEFT,
        HTSIZELAST = HTBOTTOMRIGHT,
        HTOBJECT = 19,
        HTCLOSE = 20,
        HTHELP = 21,
    }

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窗口拖动

1、在界面上对布局元素如Grid,添加委托事件： MouseLeftButtonDown="UIElement_OnMouseLeftButtonDown"

2、委托方法中处理一下就行了：

        private void UIElement_OnMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            if (e.ButtonState==MouseButtonState.Pressed) { this.DragMove(); } }

WPF 窗口

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