Try This
#include <GUIConstantsEx.au3>
$Form1 = GUICreate("Run App", 257, 143, 302, 218)
GUISetIcon("D:\006.ico")
$Button1 = GUICtrlCreateButton("&Run", 80, 96, 75, 25)
GUICtrlSetFont(-1, 8, 800, 0, "MS Sans Serif")
$Label1 = GUICtrlCreateLabel("App Name", 8, 24, 56, 17)
GUICtrlSetFont(-1, 8, 800, 0, "MS Sans Serif")
GUICtrlCreateInput("", 64, 24, 185, 21)
GUISetState(@SW_SHOW)
While 1
$nMsg = GUIGetMsg()
Select
Case $nMsg = $Button1
$appPath = ControlGetText("Run App","","[CLASS:Edit; INSTANCE:1]")
Run($appPath)
Case $nMsg = $GUI_EVENT_CLOSE
Exit
EndSelect
WEnd