[英]WndProc in RadWindow WPF
我正在嘗試檢測WPF應用程序中的Windows注銷或關機。 有人可以幫忙嗎?
xaml.cs
private static int WM_QUERYENDSESSION = 0x11;
private static bool systemShutdown = false;
public static event Microsoft.Win32.SessionEndingEventHandler SessionEnding;
protected virtual void WndProc(ref System.Windows.Forms.Message m)
{
if (m.Msg == WM_QUERYENDSESSION)
{
MessageBox.Show("queryendsession: this is a logoff, shutdown, or reboot");
systemShutdown = true;
}
// If this is WM_QUERYENDSESSION, the closing event should be
// raised in the base WndProc.
base.WndProc(ref m); //Error
} //WndProc
錯誤:RadWindow不包含“ WndProc”的定義
RadWindow
加載后,您應該能夠獲得對父WPF窗口的引用並創建Win32掛鈎:
public class MyRadWindow : RadWindow
{
public MyRadWindow()
{
Loaded += MyRadWindow_Loaded;
}
private void MyRadWindow_Loaded(object sender, System.Windows.RoutedEventArgs e)
{
System.Windows.Window wpfWindow = this.ParentOfType<System.Windows.Window>();
HwndSource source = HwndSource.FromHwnd(new WindowInteropHelper(wpfWindow).Handle);
source.AddHook(new HwndSourceHook(WndProc));
}
private const int WM_QUERYENDSESSION = 0x11;
private static IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
if (msg == WM_QUERYENDSESSION)
{
//...
}
return IntPtr.Zero;
}
...
}
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