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font/gui resizing

3 posts in this topic

Posted

I have created a simple GUI but when I set the systems' DPI scaling to use a 'Larger scale (120 DPI)'

my GUI becomes largely unreadable

On Vista, DPI scaling is accessed by rightclick the desktop/personalize / look in the upper right /Adjust font size (DPI)

I would either like to have the GUI detect the DPI change and auto change itself to match

(the GUI would need to enlarge itself to match the font enlargement)

OR, have the GUI 'locked' and not be affected by the DPI change.

any help with this situation would be greatly appreciated.

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Posted

I have created a simple GUI but when I set the systems' DPI scaling to use a 'Larger scale (120 DPI)'

my GUI becomes largely unreadable

On Vista, DPI scaling is accessed by rightclick the desktop/personalize / look in the upper right /Adjust font size (DPI)

I would either like to have the GUI detect the DPI change and auto change itself to match

(the GUI would need to enlarge itself to match the font enlargement)

OR, have the GUI 'locked' and not be affected by the DPI change.

any help with this situation would be greatly appreciated.

Here is a script by Phillip123Adams that I copied at some time which might help

;; GetDPI.au3
;;
;; Get the current DPI (dots per inch) setting, and the ratio
;; between it and approximately 96 DPI.
;;
;; Author: Phillip123Adams
;; Posted: August, 17, 2005, originally developed 10/17/2004,
;; AutoIT 3.1.1.67 (but earlier v3.1.1 versions with DLLCall should work).
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;~   ;; Example
;~  #include<guiconstants.au3>
;~   ;;
;~   ;; Get the current DPI.
;~  $a1 = _GetDPI()
;~  $iDPI = $a1[1]
;~  $iDPIRat = $a1[2]
;~   ;;
;~   ;; Design the GUI to show how to apply the DPI adjustment.
;~  GUICreate("Applying DPI to GUI's", 250 * $iDPIRat, 120 * $iDPIRat)
;~  $lbl = GUICtrlCreateLabel("The current DPI value is " & $iDPI &@lf& "Ratio to 96 is " & $iDPIRat &@lf&@lf& "Call function _GetDPI.  Then multiply all GUI dimensions by the returned value divided by approximately 96.0.", 10 * $iDPIRat, 5 * $iDPIRat, 220 * $iDPIRat, 80 * $iDPIRat)
;~  $btnClose = GUICtrlCreateButton("Close", 105 * $iDPIRat, 90 * $iDPIRat, 40 * $iDPIRat, 20 * $iDPIRat)
;~  GUISetState()
;~   ;;
;~  while 1
;~   $iMsg = GUIGetMsg()
;~   If $iMsg = $GUI_EVENT_CLOSE or $iMsg = $btnClose then ExitLoop
;~  WEnd
;~  Exit
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
Func _GetDPI ()
  ;; Get the current DPI (dots per inch) setting, and the ratio between it and
  ;; approximately 96 DPI.
  ;;
  ;; Retrun a 1D array of dimension 3.  Indices zero is the dimension of the array
  ;; minus one.  Indices 1 = the current DPI (an integer).  Indices 2 is the ratio
  ;; should be applied to all GUI dimensions to make the GUI automatically adjust
  ;; to suit the various DPI settings.
  ;; 
  ;; Author: Phillip123Adams
  ;; Posted: August, 17, 2005, originally developed 6/04/2004,
  ;; AutoIT 3.1.1.67 (but earlier v3.1.1 versions with DLLCall should work).
  ;;
  ;; Note: The dll calls are based upon code from the AutoIt3 forum from a post
  ;; by this-is-me on Nov 23 2004, 10:29 AM under topic "@Larry, Help!"  Thanks
  ;; to this-is-me and Larry.  Prior to that, I was obtaining the current DPI
  ;; from the Registry:
  ;;    $iDPI = RegRead("HKCU\Control Panel\Desktop\WindowMetrics", "AppliedDPI")
  ;;
   Local $a1[3]
   Local $iDPI, $iDPIRat, $Logpixelsy = 90, $hWnd = 0
   Local $hDC = DllCall("user32.dll", "long", "GetDC", "long", $hWnd)
   Local $aRet = DllCall("gdi32.dll", "long", "GetDeviceCaps", "long", $hDC[0], "long", $Logpixelsy)
   Local $hDC = DllCall("user32.dll", "long", "ReleaseDC", "long", $hWnd, "long", $hDC)
   $iDPI = $aRet[0]
  ;; Set a ratio for the GUI dimensions based upon the current DPI value.
   Select
      Case $iDPI = 0
         $iDPI = 96
         $iDPIRat =  94
      Case $iDPI < 84
         $iDPIRat =  $iDPI / 105
      Case $iDPI < 121
         $iDPIRat =  $iDPI / 96
      Case $iDPI < 145
         $iDPIRat =  $iDPI / 95
      Case Else
         $iDPIRat =  $iDPI / 94
   EndSelect
   $a1[0] = 2
   $a1[1] = $iDPI
   $a1[2] = $iDPIRat
  ;; Return the array
   Return $a1
EndFunc
$dpi = _getDPI()
msgbox(0,"dpi",$dpi[1])
BernyHsu likes this

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Posted

martin, and more importantly Phillip123Adams . . .

THANK YOU for the perfect solution.

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