Is the WPF event loop in this answer still a good one for FSI (besides rethrow
which is now reraise
)? The answer is from 2008 and I'm not sure if there ar开发者_运维百科e any "better" implementations around. If not what would one be?
My understanding is that the default implementation is for WinForms.
Yes the default is for Winforms, I do use the WpfEventLoop quite a lot, Code is below,
#I "c:/Program Files/Reference Assemblies/Microsoft/Framework/v3.0"
#I "C:/WINDOWS/Microsoft.NET/Framework/v3.0/WPF/"
#r "PresentationCore.dll"
#r "PresentationFramework.dll"
#r "WindowsBase.dll"
module WPFEventLoop =
open System
open System.Windows
open System.Windows.Threading
open Microsoft.FSharp.Compiler.Interactive
open Microsoft.FSharp.Compiler.Interactive.Settings
type RunDelegate<'b> = delegate of unit -> 'b
let Create() =
let app =
try
// Ensure the current application exists. This may fail, if it already does.
let app = new Application() in
// Create a dummy window to act as the main window for the application.
// Because we're in FSI we never want to clean this up.
new Window() |> ignore;
app
with :? InvalidOperationException -> Application.Current
let disp = app.Dispatcher
let restart = ref false
{ new IEventLoop with
member x.Run() =
app.Run() |> ignore
!restart
member x.Invoke(f) =
try
disp.Invoke(DispatcherPriority.Send,new RunDelegate<_>(fun () -> box(f ()))) |> unbox
with e -> eprintf "\n\n ERROR: %O\n" e; reraise()
member x.ScheduleRestart() = ()
//restart := true;
//app.Shutdown()
}
let Install() = fsi.EventLoop <- Create()
WPFEventLoop.Install()
Test code
open System
open System.Windows
open System.Windows.Controls
let window = new Window(Title = "Simple Test", Width = 800., Height = 600.)
window.Show()
let textBox = new TextBox(Text = "F# is fun")
window.Content <- textBox
Let me know if this helps.
-Fahad
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