SystemEvents.LowMemory Event
Definition
Important
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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
- Attributes
Exceptions
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.
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.
