SystemEvents.LowMemory Event



This API is now obsolete.

Occurs when the system is running out of available RAM.

 static event EventHandler ^ LowMemory;
[System.Obsolete("This event has been deprecated.")]
[System.Obsolete("This event has been deprecated.")]
[System.Obsolete("This event has been deprecated.")]
public static event EventHandler LowMemory;
member this.LowMemory : EventHandler 
Public Shared Custom Event LowMemory As EventHandler 


System event notifications are not supported under the current context. Server processes, for example, might not support global system event notifications.

The attempt to create a system events window thread did not succeed.


This event wraps the WM_COMPACTING message. This message is sent to all top-level windows when the system detects more than 12.5 percent of system time over a 30- to 60-second interval is being spent compacting memory. This indicates that system memory is low.


This event is only raised if the message pump is running. In a Windows service, unless a hidden form is used or the message pump has been started manually, this event will not be raised. For a code example that shows how to handle system events by using a hidden form in a Windows service, see the SystemEvents class.


Because this is a static event, you must detach your event handlers when your application is disposed, or memory leaks will result.

Notes to Callers

This message is provided only for compatibility with 16-bit Windows-based applications.

Applies to