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SystemEvents.LowMemory Event

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Definition

Namespace:
Microsoft.Win32
Assembly:
Microsoft.Win32.SystemEvents.dll
Assembly:
System.dll
Package:
Microsoft.Win32.SystemEvents v8.0.0
Package:
Microsoft.Win32.SystemEvents v9.0.0-rc.2.24473.5
Source:
SystemEvents.cs
Source:
SystemEvents.cs

Caution

The LowMemory event has been deprecated and is not supported.

Caution

This event has been deprecated. http://go.microsoft.com/fwlink/?linkid=14202

Caution

This event has been deprecated. https://go.microsoft.com/fwlink/?linkid=14202

Occurs when the system is running out of available RAM.

public:
 static event EventHandler ^ LowMemory;
[System.ComponentModel.Browsable(false)]
[System.Obsolete("The LowMemory event has been deprecated and is not supported.")]
public static event EventHandler? LowMemory;
public static event EventHandler LowMemory;
[System.ComponentModel.Browsable(false)]
[System.Obsolete("This event has been deprecated. http://go.microsoft.com/fwlink/?linkid=14202")]
public static event EventHandler LowMemory;
[System.ComponentModel.Browsable(false)]
[System.Obsolete("This event has been deprecated. https://go.microsoft.com/fwlink/?linkid=14202")]
public static event EventHandler LowMemory;
[System.ComponentModel.Browsable(false)]
[System.Obsolete("This event has been deprecated. https://go.microsoft.com/fwlink/?linkid=14202")]
public static event EventHandler? LowMemory;
[<System.ComponentModel.Browsable(false)>]
[<System.Obsolete("The LowMemory event has been deprecated and is not supported.")>]
member this.LowMemory : EventHandler 
member this.LowMemory : EventHandler 
[<System.ComponentModel.Browsable(false)>]
[<System.Obsolete("This event has been deprecated. http://go.microsoft.com/fwlink/?linkid=14202")>]
member this.LowMemory : EventHandler 
[<System.ComponentModel.Browsable(false)>]
[<System.Obsolete("This event has been deprecated. https://go.microsoft.com/fwlink/?linkid=14202")>]
member this.LowMemory : EventHandler 
Public Shared Custom Event LowMemory As EventHandler

Event Type

EventHandler
Attributes
BrowsableAttribute ObsoleteAttribute

Exceptions

InvalidOperationException

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

ExternalException

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

Remarks

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.

Note

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.

Caution

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