#include 
#include 
$Form1 = GUICreate("AutoIt 捕获Input的回车事件", 309, 171, -1, -1, BitOR($WS_SYSMENU,$WS_CAPTION,$WS_BORDER,$WS_CLIPSIBLINGS), $WS_EX_TOPMOST)
$Input1 = GUICtrlCreateInput("", 72, 40, 153, 21)
$Button1 = GUICtrlCreateButton("修改(&E)", 152, 72, 75, 25)
$Label1 = GUICtrlCreateLabel("╃苍狼山庄╃ HTTP://WWW.CLANG.CN", 90, 152, 235, 17)
GUICtrlSetState(-1, $GUI_DISABLE)
GUISetState(@SW_SHOW)

While 1
	$nMsg = GUIGetMsg()
	Switch $nMsg
		Case $GUI_EVENT_CLOSE
			Exit
		Case $Button1
			$strInput1 = StringLower (GUICtrlRead($Input1))
	        If $strInput1 = "" Then
				MsgBox(0+16+262144,"警告","您没有输入任何内容！")		
			Else
				Msgbox(0+64+262144, "信息", "您输入的是："& $strInput1)
			EndIf
	EndSwitch
WEnd

Input文本框中输入任意内容，按回车激活按钮事件，只要在

$Button1 = GUICtrlCreateButton("修改(&E)", 152, 72, 75, 25)

下面加入两行代码即可：

Dim $Form1_AccelTable[1][2] = [["{ENTER}", $Button1]]
GUISetAccelerators($Form1_AccelTable)

修改后的代码如下：

#include 
#include 
$Form1 = GUICreate("AutoIt 捕获Input的回车事件", 309, 171, -1, -1, BitOR($WS_SYSMENU,$WS_CAPTION,$WS_BORDER,$WS_CLIPSIBLINGS), $WS_EX_TOPMOST)
$Input1 = GUICtrlCreateInput("", 72, 40, 153, 21)
$Button1 = GUICtrlCreateButton("修改(&E)", 152, 72, 75, 25)
Dim $Form1_AccelTable[1][2] = [["{ENTER}", $Button1]]
GUISetAccelerators($Form1_AccelTable)
$Label1 = GUICtrlCreateLabel("╃苍狼山庄╃ HTTP://WWW.CLANG.CN", 90, 152, 235, 17)
GUICtrlSetState(-1, $GUI_DISABLE)
GUISetState(@SW_SHOW)

While 1
	$nMsg = GUIGetMsg()
	Switch $nMsg
		Case $GUI_EVENT_CLOSE
			Exit
		Case $Button1
			$strInput1 = StringLower (GUICtrlRead($Input1))
	        If $strInput1 = "" Then
				MsgBox(0+16+262144,"警告","您没有输入任何内容！")		
			Else
				Msgbox(0+64+262144, "信息", "您输入的是："& $strInput1)
			EndIf
	EndSwitch
WEnd