試圖找出如何引爆的事件時按下Enter鍵在TextBox按下

Question

我擺弄的代碼是：

open System 
open System.Windows.Forms 
open System.Drawing 

let tehform = new Form(Text = "STOP!", Width = 200, Height = 200) 
let awe = new TextBox(Left = 1, Top = 30, Width = 100) 
let stuff _ _ = MessageBox.Show(awe.Text) |> ignore 
let handler = new EventHandler(stuff) 
let yeah = new Button(Text = "", Left = 20, Top = 60, Width = 80) 
yeah.Click.AddHandler(handler) 
let ms = new MenuStrip() 
let file = new ToolStripDropDownButton("File") 
let ddi = file.DropDownItems.Add("Hi") 
ddi.Click.AddHandler(handler) |> ignore 
ms.Items.Add(file) |> ignore 
let dc c = (c :> Control) 
tehform.Controls.AddRange([| dc yeah; dc ms; dc awe |]) 

我想，看在圖書館，我可以用awe.OnEnter.AddHandler（處理程序），但也沒有工作。謝謝您的幫助！

Answer 1

OnEnter在TextBox獲取焦點時觸發。使用OnKeyDown事件並檢查事件參數的Keys屬性。

Here's the MSDN documentation。