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Event.merge<'Del1,'T,'Del2> Function (F#)

Fires the output event when either of the input events fire.

Namespace/Module Path: Microsoft.FSharp.Control.Event

Assembly: FSharp.Core (in FSharp.Core.dll)

// Signature:
Event.merge : IEvent<'Del1,'T> -> IEvent<'Del2,'T> -> IEvent<'T> (requires delegate and delegate)

// Usage:
Event.merge event1 event2

event1

Type: IEvent<'Del1,'T>

The first input event.

event2

Type: IEvent<'Del2,'T>

The second input event.

An event that fires when either of the input events fire.

This function is named Merge in compiled assemblies. If you are accessing the function from a language other than F#, or through reflection, use this name.

The following code example shows how to use the Event.merge function.

let form = new Form(Text = "F# Windows Form",
                    Visible = true,
                    TopMost = true)
form.MouseClick
    |> Event.merge(form.MouseDoubleClick)
    |> Event.add ( fun evArgs ->
        form.BackColor <- System.Drawing.Color.FromArgb(
            evArgs.X, evArgs.Y, evArgs.X ^^^ evArgs.Y) )

Windows 8, Windows 7, Windows Server 2012, Windows Server 2008 R2

F# Core Library Versions

Supported in: 2.0, 4.0, Portable

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