我在我的主窗口上添加了Closing事件的代码,用于点击X,它可以在没有问题的情况下取消事件(它通过“你确定吗？确保保存”类型对话框和闭幕活动)
不幸的是,如果我双击图标它会在RibbonWindow_Closing事件上点击我的断点,但是当e.Cancel设置为true时它无论如何都会关闭,就像它被Application.Current.Shutdown()调用一样.
Alt-F4(和图标 – >关闭)和X按钮都正确处理,但没有双击图标本身
有谁知道为什么会这样？我正在使用Prism,如果重要的话,主窗口是由引导程序创建的.
这是堆栈跟踪,除了命中我的RibbonWindow_Closing事件之外的所有外部代码：
MyProgram.exe!MyProgram.Shell.RibbonWindow_Closing(object sender, System.ComponentModel.CancelEventArgs e) Line 64 C#
PresentationFramework.dll!System.Windows.Window.OnClosing(System.ComponentModel.CancelEventArgs e) + 0x91 bytes
PresentationFramework.dll!System.Windows.Window.WmClose() + 0x96 bytes
PresentationFramework.dll!System.Windows.Window.WindowFilterMessage(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) + 0xe5 bytes
PresentationCore.dll!System.Windows.Interop.HwndSource.PublicHooksFilterMessage(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) + 0x7e bytes
WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) + 0xbe bytes
WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) + 0x7d bytes
WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) + 0x53 bytes
WindowsBase.dll!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(object source, System.Delegate method, object args, int numArgs, System.Delegate catchHandler) + 0x42 bytes
WindowsBase.dll!System.Windows.Threading.Dispatcher.InvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs) + 0xb4 bytes
WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam) + 0x104 bytes
[Native to Managed Transition]
[Managed to Native Transition]
PresentationFramework.dll!System.Windows.Window.InternalClose(bool shutdown, bool ignoreCancel) + 0xa1 bytes
PresentationFramework.dll!System.Windows.Application.DoShutdown() + 0x1b6 bytes
PresentationFramework.dll!System.Windows.Application.ShutdownImpl() + 0x1c bytes
PresentationFramework.dll!System.Windows.Application.ShutdownCallback(object arg) + 0x5 bytes
WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) + 0x53 bytes
WindowsBase.dll!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(object source, System.Delegate method, object args, int numArgs, System.Delegate catchHandler) + 0x42 bytes
WindowsBase.dll!System.Windows.Threading.DispatcherOperation.InvokeImpl() + 0x8d bytes
测试RibbonWindow,给出消息但仍然关闭
<ribbon:RibbonWindow x:Class="MyProject.TestShell"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:ribbon="clr-namespace:Microsoft.Windows.Controls.Ribbon;assembly=RibbonControlsLibrary"
Title="TestShell" Height="300" Width="300" Closing="Window_Closing">
<Grid>
<DockPanel LastChildFill="True">
</DockPanel>
</Grid>
</ribbon:RibbonWindow>
这作为常规窗口,获取消息并保持打开状态：
<Window x:Class="MyProject.TestShell"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="TestShell" Height="300" Width="300" Closing="Window_Closing">
<Grid>
<DockPanel LastChildFill="True">
</DockPanel>
</Grid>
</Window>
代码背后很简单：
private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
e.Cancel = true;
MessageBox.Show("No close!");
}
更新
好吧我把它缩小到RibbonWindow控件的问题,显然它在双击图标时关闭了应用程序.
显然,如果子窗口以相同的方式关闭,它也会关闭主应用程序：http://social.msdn.microsoft.com/Forums/en/wpf/thread/3e9cdc9c-dfb7-49f2-923a-ead07504d568
/// <summary>
/// This handles the click events on the window icon.
/// </summary>
/// <param name="sender">Click event sender</param>
/// <param name="e">event args</param>
private void IconMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (e.ClickCount == 1)
{
if (SystemCommands.ShowSystemMenuCommand.CanExecute(null, this))
{
SystemCommands.ShowSystemMenuCommand.Execute(null, this);
}
}
else if (e.ClickCount == 2)
{
if (ApplicationCommands.Close.CanExecute(null, this))
{
ApplicationCommands.Close.Execute(null, this);
}
}
}
解决方法:
好吧我把它缩小到RibbonWindow控件的问题,显然它在双击图标时关闭了应用程序.
http://social.msdn.microsoft.com/Forums/en/wpf/thread/3e9cdc9c-dfb7-49f2-923a-ead07504d568
/// <summary>
/// This handles the click events on the window icon.
/// </summary>
/// <param name="sender">Click event sender</param>
/// <param name="e">event args</param>
private void IconMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (e.ClickCount == 1)
{
if (SystemCommands.ShowSystemMenuCommand.CanExecute(null, this))
{
SystemCommands.ShowSystemMenuCommand.Execute(null, this);
}
}
else if (e.ClickCount == 2)
{
if (ApplicationCommands.Close.CanExecute(null, this))
{
ApplicationCommands.Close.Execute(null, this);
}
}
}
我在这里找到了解决方案：http://social.msdn.microsoft.com/Forums/en/wpf/thread/9955b191-13d5-4986-a5c0-e73f50a44b44
这是注册我自己的ApplicationClosing命令,如：
[Export]
public partial class TestShell : RibbonWindow
{
public TestShell()
{
InitializeComponent();
CommandManager.RegisterClassCommandBinding(typeof(TestShell), new CommandBinding(ApplicationCommands.Close, CloseApplicationExecuted));
}
private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
e.Cancel = true;
MessageBox.Show("Not closing 1!");
}
private static void CloseApplicationExecuted(object sender, ExecutedRoutedEventArgs args)
{
RibbonWindow window = sender as RibbonWindow;
if (window != null)
{
MessageBox.Show("Not closing 2!");
args.Handled = true;
}
}
}
现在,如果我双击图标我得到“不关闭2！”,以及任何其他关闭方法,我得到“不关闭1！”
希望这可以节省一些时间让我想出来的时间.谢谢Hans帮我诊断问题.
更新：如果您希望CloseApplicationExecuted触发与常规关闭相同的事件,请调用
private static void CloseApplicationExecuted(object sender, ExecutedRoutedEventArgs args)
{
RibbonWindow window = sender as RibbonWindow;
if (window != null)
{
args.Handled = true;
window.Close();
}
}