C# WPF 在 AllowTransparency="true" 的窗口上显示 WebBrowser 不显示
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C# WPF Displaying WebBrowser on window with AllowTransparency="true" does not display
提问by user2840301
I am displaying a window with a WebBrowser control on it. I want the windows to be frameless so I have set WindowStyle="None" This works BUT displays a colored border around the window. Allowstransparency="true" removes this BUT the WebBrowser is no longer displayed (buttons are)
我正在显示一个带有 WebBrowser 控件的窗口。我希望窗口是无框的，所以我设置了 WindowStyle="None" 这有效但在窗口周围显示了彩色边框。Allowstransparency="true" 删除此但 WebBrowser 不再显示（按钮是）
I have found http://www.neowin.net/forum/topic/646970-c%23-wpf-window-with-transparency-makes-windowsformshost-disappear/BUT I cannot get it to work (SetWindowsLong Parameter error)
我找到了http://www.neowin.net/forum/topic/646970-c%23-wpf-window-with-transparency-makes-windowsformshost-disappear/但我无法让它工作（SetWindowsLong 参数错误）
Window x:Class="ZoomBrowserWPF.WebWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:UMenu"
Title="Test" Height="605" Width="700" ResizeMode="CanResizeWithGrip"
Loaded="Window_Loaded" Unloaded="Window_Unloaded"
WindowStyle="None"
Background="Transparent"
Left="1" Top="1"
UseLayoutRounding="True" SizeChanged="Window_SizeChanged" >
<Border Name="WindowBorder" BorderBrush="Black" BorderThickness="1" CornerRadius="10" Background="Beige">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="25"/>
<RowDefinition Height="30"/>
<RowDefinition/>
<RowDefinition Height="33"/>
<RowDefinition Height="25.5"/>
</Grid.RowDefinitions>
<Grid x:Name="GridWebBrowser" Grid.Row="2" Grid.RowSpan="2">
<WebBrowser x:Name="webBrowser" Grid.ColumnSpan="2" Visibility="Visible"
Margin="0,0,-16,0"
ScrollViewer.HorizontalScrollBarVisibility="Disabled"
ScrollViewer.VerticalScrollBarVisibility="Auto"
ScrollViewer.IsDeferredScrollingEnabled="False"
ScrollViewer.CanContentScroll="False"
/>
</Grid>
<Button x:Name="btnZoomIn" Content="Zoom in" Grid.Row="1" Height="23" HorizontalAlignment="Left" Margin="12,0,0,0" VerticalAlignment="Top" Width="75" Click="btnZoomIn_Click" />
<Button x:Name="btnZoomOut" Content="Zoom out" Grid.Row="1" Height="23" HorizontalAlignment="Left" Margin="168,0,0,0" VerticalAlignment="Top" Width="75" Click="btnZoomOut_Click" />
<TextBlock Grid.Row="1" Height="23" HorizontalAlignment="Left" Margin="102,0,0,0" Name="txtZoom" Text="100" VerticalAlignment="Top" Width="60" />
</Grid>
</Border>
</Window>
回答by nvm-uli
I know this is an old question but I had exactly the same problem today and I solved it using
我知道这是一个老问题，但我今天遇到了完全相同的问题，我使用
ResizeMode="NoResize"
instead of
代替
Allowstransparency="true"
The ResizeMode does remove the annoing border too and does not impact the WebBrowser control. Seems to be the easiest way to solve your problem in this case :)
ResizeMode 也会删除 annoing 边框，并且不会影响 WebBrowser 控件。在这种情况下，似乎是解决问题的最简单方法:)
回答by nvm-uli
It doesn't work through WPF trickery, because the WebBrowser control is actually not a WPF control. It is a wrapped ActiveX IE web browser control, not rendered by WPF.
它不能通过 WPF 技巧工作，因为 WebBrowser 控件实际上不是 WPF 控件。它是一个封装的 ActiveX IE Web 浏览器控件，不是由 WPF 呈现的。
Perhaps your issue is related to this post Removing border from WebBrowser control.
也许您的问题与这篇文章Removing border from WebBrowser control 有关。
Honestly, if possible, try to abandon this awful WebControl and use something else. There are free alternatives with proper WPF support, such as Awesomium.NET, CefSharp, or CefGlue.NET (all based on Chromium).
老实说，如果可能的话，尽量放弃这个糟糕的 WebControl 并使用其他东西。有一些具有适当 WPF 支持的免费替代品，例如 Awesomium.NET、CefSharp 或 CefGlue.NET（均基于 Chromium）。
回答by Wobbles
This is an old question but I wanted to post what I have done to get it working.
这是一个老问题，但我想发布我为使其工作所做的工作。
When you want to create a window with no border that is resizeable and is able to host a WebBrowser control or a Frame control pointed to a URL you simply couldn't, the contents of said control would show empty as the OP said.
当您想创建一个没有边框、可调整大小并且能够承载 WebBrowser 控件或指向您根本无法创建的 URL 的 Frame 控件的窗口时，所述控件的内容将显示为空，如 OP 所说。
I found a workaround though; in the Window, if you set the WindowStyle to None, ResizeMode to NoResize (bear with me, you will still be able to resize once done) then make sure you have UNCHECKED AllowsTransparency you will have a static sized window with no border and will show the browser control.
不过，我找到了一种解决方法；在窗口中，如果您将 WindowStyle 设置为 None，将 ResizeMode 设置为 NoResize（请耐心等待，完成后您仍然可以调整大小）然后确保您已取消选中 AllowsTransparency 您将拥有一个没有边框的静态大小窗口，并将显示浏览器控件。
Now, you probably still want to be able to resize right? Well we can to that with a interop call:
现在，您可能仍然希望能够调整大小，对吗？好吧，我们可以通过互操作调用来实现：
[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);
[DllImportAttribute("user32.dll")]
public static extern bool ReleaseCapture();
//Attach this to the MouseDown event of your drag control to move the window in place of the title bar
private void WindowDrag(object sender, MouseButtonEventArgs e) // MouseDown
{
ReleaseCapture();
SendMessage(new WindowInteropHelper(this).Handle,
0xA1, (IntPtr)0x2, (IntPtr)0);
}
//Attach this to the PreviewMousLeftButtonDown event of the grip control in the lower right corner of the form to resize the window
private void WindowResize(object sender, MouseButtonEventArgs e) //PreviewMousLeftButtonDown
{
HwndSource hwndSource = PresentationSource.FromVisual((Visual)sender) as HwndSource;
SendMessage(hwndSource.Handle, 0x112, (IntPtr)61448, IntPtr.Zero);
}
And voila, A WPF window with no border and still movable and resizable without losing compatibility with with controls like WebBrowser
瞧，一个没有边框的 WPF 窗口，仍然可以移动和调整大小，而不会失去与 WebBrowser 等控件的兼容性
回答by nichop
I looked at the source you posted and it works for me. Heres the Code:
我查看了您发布的来源，它对我有用。代码如下：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Interop;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
namespace PAUL.Allgemein.Seiten
{
/// <summary>
/// Interaktionslogik für Robbe.xaml
/// </summary>
public partial class Robbe : Window
{
#region The Classic Window API
//The SendMessage function sends a message to a window or windows.
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)]
static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, int wParam, int lParam);
//ReleaseCapture releases a mouse capture
[DllImportAttribute("user32.dll", CharSet = CharSet.Auto, SetLastError = false)]
public static extern bool ReleaseCapture();
//SetWindowLong lets you set a window style
[System.Runtime.InteropServices.DllImport("user32.dll")]
static extern int SetWindowLong(IntPtr hWnd, int nIndex, long dwNewLong);
#endregion
const int GWL_STYLE = -16;
const long WS_POPUP = 2147483648;
//private const int GWL_STYLE = -16;
//private const int WS_SYSMENU = 0x80000;
//[DllImport("user32.dll", SetLastError = true)]
//private static extern int GetWindowLong(IntPtr hWnd, int nIndex);
//[DllImport("user32.dll")]
//private static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);
public Robbe()
{
InitializeComponent();
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
IntPtr hWnd = new System.Windows.Interop.WindowInteropHelper(this).Handle;
SetWindowLong(hWnd, GWL_STYLE, WS_POPUP);
}
}
}
and the Xaml code:
和 Xaml 代码：
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Robbe" Height="300" Width="300"
Loaded="Window_Loaded">
<Grid>
<!-- Creates the shadow on the right and bottom -->
<Border Focusable="False" BorderBrush="Gray"
BorderThickness="0,0,2,2"
CornerRadius="10"
Background="Beige" >
<WebBrowser Source="C:\Users\nicholas\Desktop\puale\PAUL\bin\Debug\robbe.swf" Margin="62,71,69,56"></WebBrowser>
</Border>
</Grid>
