我正在WPF中写一个模态对话框。我如何设置一个WPF窗口没有关闭按钮?我仍然希望它的WindowState有一个正常的标题栏。
我找到了ResizeMode、WindowState和WindowStyle,但这些属性都不允许我隐藏关闭按钮,而是显示标题栏,就像在模态对话框中一样。
我正在WPF中写一个模态对话框。我如何设置一个WPF窗口没有关闭按钮?我仍然希望它的WindowState有一个正常的标题栏。
我找到了ResizeMode、WindowState和WindowStyle,但这些属性都不允许我隐藏关闭按钮,而是显示标题栏,就像在模态对话框中一样。
当前回答
Goto窗口属性设置
window style = none;
你不会有关闭按钮…
其他回答
XAML 代码
<Button Command="Open" Content="_Open">
<Button.Style>
<Style TargetType="Button">
<Style.Triggers>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Visibility" Value="Collapsed" />
</Trigger>
</Style.Triggers>
</Style>
</Button.Style>
</Button>
应该工作
编辑-在你的瞬间,这个线程展示了如何做到这一点,但我不认为窗口有一个属性来获得你想要的而不失去正常的标题栏。
编辑2 这个线程展示了一种方法,但你必须将自己的风格应用到系统菜单,它展示了一种方法,你可以这样做。
使用这个,从https://stephenhaunts.com/2014/09/25/remove-the-close-button-from-a-wpf-window修改:
using System;
using System.Runtime.InteropServices;
using System.Windows;
using System.Windows.Input;
using System.Windows.Interop;
using System.Windows.Media;
namespace Whatever
{
public partial class MainMenu : Window
{
private const int GWL_STYLE = -16;
private const int WS_SYSMENU = 0x00080000;
[DllImport("user32.dll", SetLastError = true)]
private static extern int GetWindowLongPtr(IntPtr hWnd, int nIndex);
[DllImport("user32.dll")]
private static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);
public MainMenu()
{
InitializeComponent();
this.Loaded += new RoutedEventHandler(Window_Loaded);
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
var hwnd = new WindowInteropHelper(this).Handle;
SetWindowLongPtr(hwnd, GWL_STYLE, GetWindowLongPtr(hwnd, GWL_STYLE) & ~WS_SYSMENU);
}
}
}
You may run into the need to toggle the window state depending on what page or user control is currently being displayed. (Yes, this is an unusual scenario, but it can happen. In our case we have a user control in our application that is displayed on an external touch screen for customers to interact with. We don't want our customers to have touch access to close the screen. But the rest of the application uses standard windows frames.) To do this from the code behind of the page or user control. Note: You must run it from the Loaded event not the constructor because the control hasn't been populated in the constructor and it will throw an exception.
// To toggle it off
Window.GetWindow(this).WindowStyle = WindowStyle.None;
// To turn it back on toggle it off
Window.GetWindow(this).WindowStyle = WindowStyle.SingleBorderWindow;
这就是你的问题所在。窗口框右上方的关闭按钮不是WPF窗口的一部分,但它属于由操作系统控制的窗口框的一部分。这意味着你必须使用Win32互操作来实现。
或者,您可以使用noframe并提供您自己的“框架”或根本没有框架。
让用户“关闭”窗口,但实际上只是隐藏它。
在窗口的OnClosing事件中,隐藏已经可见的窗口:
If Me.Visibility = Windows.Visibility.Visible Then
Me.Visibility = Windows.Visibility.Hidden
e.Cancel = True
End If
每次后台线程执行时,重新显示后台UI窗口:
w.Visibility = Windows.Visibility.Visible
w.Show()
当终止程序执行时,确保所有窗口都是/可以关闭的:
Private Sub CloseAll()
If w IsNot Nothing Then
w.Visibility = Windows.Visibility.Collapsed ' Tell OnClosing to really close
w.Close()
End If
End Sub