예제 #1
0
        /// <include file='doc\OleMenuCommandService.uex' path='docs/doc[@for="OleMenuCommandService.OnCommandChanged"]/*' />
        /// <devdoc>
        ///     This is called by a menu command when it's status has changed.
        /// </devdoc>
        protected override void OnCommandsChanged(MenuCommandsChangedEventArgs e)
        {
            base.OnCommandsChanged(e);

            if (0 == _queryStatusCount)
            {
                // UpdateCommandUI(0) can not be called inside QueryStatus because this will cause an infinite
                // sequence of calls to QueryStatus during idle time.

                IVsUIShell uiShellSvc = null;
                try
                {
                    uiShellSvc = GetService(typeof(SVsUIShell)) as IVsUIShell;
                }
                catch (Exception)
                {
                    // The command change notifications may come at shutdown time after COM has been terminated if a package or addin
                    // chooses to remove menu commands from an object finalizer (the finalizer thread runs after COM shutdown, too).
                    // Any access to shell services at that point will cause System.InvalidComObjectException, System.AccessViolationException
                    // or System.Runtime.InteropServices.COMException(RPC_E_DISCONNECTED) because the RCW for the service provider
                    // has been disconnected from the underlying COM object.
                    // Instead of crashing, catch exceptions around getting the shell service, and skip updating the UI.
                    // Continue to throw if there were problems obtaining the shell service when running on the UI thead (as the function should normally be invoked).
                    if (IsCurrentThreadMainUIThread())
                    {
                        throw;
                    }
                }

                if (uiShellSvc != null)
                {
                    NativeMethods.ThrowOnFailure(uiShellSvc.UpdateCommandUI(0));
                }
            }
        }
예제 #2
0
 protected virtual void OnCommandsChanged(MenuCommandsChangedEventArgs e)
 {
     if (MenuCommandsChanged != null)
     {
         MenuCommandsChanged(this, e);
     }
 }
예제 #3
0
        /// <include file='doc\OleMenuCommandService.uex' path='docs/doc[@for="OleMenuCommandService.OnCommandChanged"]/*' />
        /// <devdoc>
        ///     This is called by a menu command when it's status has changed.
        /// </devdoc>
        protected override void OnCommandsChanged(MenuCommandsChangedEventArgs e)
        {
            base.OnCommandsChanged(e);

            if (0 == _queryStatusCount)
            {
                // UpdateCommandUI(0) can not be called inside QueryStatus because this will cause an infinite
                // sequence of calls to QueryStatus during idle time.
                IVsUIShell uiShellSvc = GetService(typeof(SVsUIShell)) as IVsUIShell;
                if (uiShellSvc != null)
                {
                    NativeMethods.ThrowOnFailure(uiShellSvc.UpdateCommandUI(0));
                }
            }
        }
 protected override void OnCommandsChanged(MenuCommandsChangedEventArgs e)
 {
     base.OnCommandsChanged(e);
     this.OnMenuCommandStatusChanged();
 }