/// <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));
}
}
}
protected virtual void OnCommandsChanged(MenuCommandsChangedEventArgs e)
{
if (MenuCommandsChanged != null)
{
MenuCommandsChanged(this, e);
}
}
/// <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();
}