title: Why is this GuiControl not updating my gui every cycle?
body: <p>Here is the pertinent code:</p>
  
  <pre><code>#Persistent
  #SingleInstance, Force
  #NoEnv
  
  Gui, 2:New
  Gui, 2: +Owner
  Gui, 2:Color, 000000
  Gui, 2:+hwndGUIaddress2
  Gui, 2:Show, w500 h137, WinB
  Gui, 2: +LastFound
  WinSet, Transparent, 190
  
  Gui, New
  Gui, +Owner
  Gui, Font, s8 cB4FFFF, Tahoma
  Gui, Add, Text, x5  y5  w130, Filename:
  ;Gui, Add, Text, vProgress
  Gui, Add, Text, x80 y5  w650 vFilename
  Gui, Add, Text,     y+1 w650 vProgress
  
  Gui, Color, EEAA99
  Gui, +LastFound
  Gui, +hwndGUIAddress1
  WinSet, TransColor, EEAA99 225
  Gui,    Show, w500 h137
  OnMessage(0x03, "WM_MOVE")
  
  Loop, D:\MOVIES_in\*.ts,0,1
  {
      title = %A_LoopFileFullPath%
      LongPath = %A_LoopFileLongPath%
      SplitPath LongPath, FileName, OutDir, OutExtension, OutNameNoExt, OutDrive
      FileGetSize, Size_In, %A_LoopFileFullPath%
  }
  
  
  GuiControl, , Filename, %title%
  
  Gosub Check_D_Drive
  
  SetTimer, Check_D_Drive, 5000
  return
  
  Check_D_Drive:
  {
      Loop, D:\MOVIES_out\*.ts,0,1
      {
          FileGetSize, Size_Out, %A_LoopFileFullPath%
      }
  
      sleep 5000
  
      Loop, D:\MOVIES_out\*.ts,0,1
      {
          FileGetSize, Size_Out2, %A_LoopFileFullPath%
      }
  
      complete:= Size_Out / Size_In
      msgbox,,,%complete%,1
      GuiControl,, Progress, %complete%
  
      if (  complete &gt; .98 )
      {
          if (%Size_Out% == %Size_Out2%)
          {
              SetTimer, Check_I_Drive, Off
              msgbox Job is complete
          }
      }
  }
  return
  ;---------------------------------------------------------------------------------
  WM_MOVE()
  {
      global GUIAddress1, global GUIAddress2
      WinGetPos, mainX, mainY, Width, Height, Ahk_id %GUIAddress1%
      WinMove, Ahk_id %GUIAddress2%,, %mainX%, %mainY%
      WinSet, AlwaysOnTop,, Ahk_id %GUIAddress1%
  }
  </code></pre>
  
  <p>Msgbox works fine. I'm just not seeing the update in my GUI.</p>