Application.LeavingBackground Event


Occurs when the app moves from the background to the foreground.

 virtual event LeavingBackgroundEventHandler ^ LeavingBackground;
// Register
event_token LeavingBackground(LeavingBackgroundEventHandler const& handler) const;

// Revoke with event_token
void LeavingBackground(event_token const* cookie) const;

// Revoke with event_revoker
Application::LeavingBackground_revoker LeavingBackground(auto_revoke_t, LeavingBackgroundEventHandler const& handler) const;
public event LeavingBackgroundEventHandler LeavingBackground;
function onLeavingBackground(eventArgs) { /* Your code */ }
application.addEventListener("leavingbackground", onLeavingBackground);
application.removeEventListener("leavingbackground", onLeavingBackground);
- or -
application.onleavingbackground = onLeavingBackground;
Public Custom Event LeavingBackground As LeavingBackgroundEventHandler 

Event Type

Windows requirements

Device family
Windows 10 Anniversary Edition (introduced in 10.0.14393.0)
API contract
Windows.Foundation.UniversalApiContract (introduced in v3.0)


The LeavingBackground event runs in the same apartment it was registered in.

Applies to

See also