Help with dynamic Gui resizing

gregnottage · September 15, 2009

Hi guys,

I've been wrestling with this all day, and I've reached a point that I can't seem to workaround. I found Melba23's great UDF (_StringSize) to help with resizing text to fit on a GUI window which works fine. However, I can't workout how to write the dynamic window sizing properly.

What I want to achieve is a form that has a fixed width, but a height that is dynamically built depending on the amount of the text in the first text label ($hLabel). If the text in the first label ($hLabel) is spread onto several lines (which is taken care of by the _StringSize function), then I want the height of the form to be re-sized accordingly. I also want the other items dynamically placed on the form at the correct height, depending on how big the first text label ($hLabel) is. I'm trying to evenly space everything out on the form automatically without needing the $hLabel text label size to be pre-determined.

Hope I've explained this correctly - but please let me know if you need some clarification?

Anyway, here's what I've got so far. If any of you gurus out there can shed any light on where I'm going wrong I would really appreciate it ;-)

Many thanks,

Greg.

;Set AutoIt options
AutoItSetOption("TrayIconDebug", 0); Show debug info in tray icon
AutoItSetOption("WinTitleMatchMode", 2); 2 = Match any substring in title
AutoItSetOption("TrayIconHide", 1); 0 = do not hide, 1 = hide tray icon
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include-once
#include <WindowsConstants.au3>
#include <SendMessage.au3>
#include <WinAPI.au3>

;Declare Variables
$strMsg1 = "This is a long message for testing purposes to push the text onto two lines"
;$strMsg1 = "This is a shorter message for testing"
;$strMsg1 = "This is a  very long message for longer testing purposes to push the text onto three lines ...."
$strMsg2 = "Next Line" 
$strMsg3 = "Please wait..."
$strFullText = $strMsg1 & @CRLF & @CRLF & $strMsg2 & @CRLF & @CRLF & $strMsg3; Build the message text
$sFont = "Arial"
$iSize = 14
$iWeight = 400
$iAttrib = 0
$iMaxWidth = 360
$iFrmWidth = 400
$iFrmHeight = 300
$iFrmLeft = 425
$iFrmTop = 15
$iPercent = 0

;Main Script
GUICreate("ScreenMsg", $iFrmWidth, $iFrmHeight, $iFrmLeft, $iFrmTop, BitOR($WS_DLGFRAME,$WS_POPUP,$WS_CLIPSIBLINGS), BitOR($WS_EX_TOPMOST,$WS_EX_WINDOWEDGE))
    GUISetBkColor(0x000000)
    $aMsgReturn = _StringSize($strFullText, $iSize, $iWeight, $iAttrib, $sFont, $iMaxWidth)
        $hLabel = GUICtrlCreateLabel($aMsgReturn[0], 10, 80, $aMsgReturn[2], $aMsgReturn[3], $SS_CENTER)
            GUICtrlSetFont(-1, $iSize, $iWeight, $iAttrib, $sFont)
            GUICtrlSetColor(-1, 0xC0C0C0)
            $iMidFrm = $iFrmWidth/2; Middle of Form
            $iMidLbl = $aMsgReturn[2]/2; Middle of Label
            $iLeftPos = $iMidFrm - $iMidLbl; Left positioning for label
            GUICtrlSetPos (-1, $iLeftPos, 80)
    ;Workout where to place the form
    $iFrmLeft = (@DesktopWidth / 2) - $iMidFrm
    $aiPos = ControlGetPos("ScreenMsg", "", $hLabel)
    $iProgTop = $aiPos[1] + $aiPos[3]
    $iProgTop = $aiPos[1] + $aiPos[3] + 30
    $iProgLeft = $iMidFrm - (350/2)
    $Progress = GUICtrlCreateProgress($iProgLeft, $iProgTop, 350, 21)
    $iPos = ControlGetPos("ScreenMsg", "", $Progress)
    $iFrmHeight = $iPos[1] + $iPos[3] + 30
    WinMove("ScreenMsg", "", $iFrmLeft, $iFrmTop, $iFrmWidth, $iFrmHeight)
GUISetState(@SW_SHOW)

While 1
    $iPercent = IniRead(@ScriptDir & "\Progress.INI", "ProgressBar", "PercentCompleted", "0")
    GUICtrlSetData($Progress, $iPercent)

    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit

    EndSwitch
WEnd

;Define Functions
; #FUNCTION# =======================================================================================
;
; Name...........: _StringSize
; Description ...: Returns size of rectangle required to display string - width can be chosen
; Syntax ........: _StringSize($sText[, $iSize[, $iWeight[, $iAttrib[, $sName[, $iWidth]]]]])
; Parameters ....: $sText   - String to display
;                  $iSize   - Font size in points - default AutoIt GUI default
;                  $iWeight - Font weight (400 = normal) - default AutoIt GUI default
;                  $iAttrib - Font attribute (0-Normal, 2-Italic, 4-Underline, 8 Strike - default AutoIt
;                  $sName   - Font name - default AutoIt GUI default
;                  $iWidth  - [optional] Width of rectangle - default is unwrapped width of string
; Requirement(s) : v3.2.12.1 or higher
; Return values .: Success - Returns array with details of rectangle required for text:
;                  |$array[0] = String formatted with @CRLF at required wrap points
;                  |$array[1] = Height of single line in selected font
;                  |$array[2] = Width of rectangle required to hold formatted string
;                  |$array[3] = Height of rectangle required to hold formatted string
;                  Failure - Returns 0 and sets @error:
;                  |1 - Incorrect parameter type (@extended = parameter index)
;                  |2 - Failure to create GUI to test label size
;                  |3 - Failure of _WinAPI_SelectObject
;                  |4 - Font too large for chosen width - longest word will not fit
; Author ........: Melba23
; Modified ......:
; Remarks .......:
; Related .......:
; Link ..........:
; Example .......: Yes
;===================================================================================================
Func _StringSize($sText, $iSize = Default, $iWeight = Default, $iAttrib = Default, $sName = Default, $iWidth = 0)
    
    Local $hWnd, $hFont, $hDC, $oFont, $tSize, $hGUI, $hText_Label, $sTest_Line
    Local $iLine_Count, $iLine_Width, $iWrap_Count, $iLast_Word
    Local $asLines[1], $avSize_Info[4], $aiPos[4]
    
    ; Check parameters are correct type
    If Not IsString($sText) Then Return SetError(1, 1, 0)
    If Not IsNumber($iSize) And $iSize <> Default   Then Return SetError(1, 2, 0)
    If Not IsInt($iWeight)  And $iWeight <> Default Then Return SetError(1, 3, 0)
    If Not IsInt($iAttrib)  And $iAttrib <> Default Then Return SetError(1, 4, 0)
    If Not IsString($sName) And $sName <> Default   Then Return SetError(1, 5, 0)
    If Not IsNumber($iWidth) Then Return SetError(1, 6, 0)

    ; Create GUI to contain test labels, set to passed font parameters 
    $hGUI = GUICreate("", 1200, 500, 10, 10)
        If $hGUI = 0 Then Return SetError(2, 0, 0)
        GUISetFont($iSize, $iWeight, $iAttrib, $sName)
    
    ; Store unwrapped text
    $avSize_Info[0] = $sText
    
    ; Ensure EoL is @CRLF and break text into lines
    If StringInStr($sText, @CRLF) = 0 Then StringRegExpReplace($sText, "[x0a|x0d]", @CRLF)
    $asLines = StringSplit($sText, @CRLF, 1)
        
    ; Draw label with unwrapped lines to check on max width
    $hText_Label = GUICtrlCreateLabel($sText, 10, 10)
    $aiPos = ControlGetPos($hGUI, "", $hText_Label)
    GUICtrlDelete($hText_Label)
    
    ; Store line height for this font size after removing label padding (always 8)
    $avSize_Info[1] = ($aiPos[3] - 8)/ $asLines[0]
    ; Store width and height of this label
    $avSize_Info[2] = $aiPos[2]
    $avSize_Info[3] = $aiPos[3] - 4 ; Reduce margin
    
    ; Check if wrapping is required
    If $aiPos[2] > $iWidth And $iWidth > 0 Then
        
        ; Set returned text element to null
        $avSize_Info[0] = ""
        
        ; Set width element to max allowed
        $avSize_Info[2] = $iWidth
        
        ; Set line count to zero
        $iLine_Count = 0
        
        ; Take each line in turn
        For $j = 1 To $asLines[0]
            
            ; Size this line unwrapped
            $hText_Label = GUICtrlCreateLabel($asLines[$j], 10, 10)
            $aiPos = ControlGetPos($hGUI, "", $hText_Label)
            GUICtrlDelete($hText_Label)
            
            ; Check wrap status
            If $aiPos[2] < $iWidth Then
                ; No wrap needed so count line and store
                $iLine_Count += 1
                $avSize_Info[0] &= $asLines[$j] & @CRLF
            Else
                ; Wrap needed so need to count wrapped lines
                
                ; Create label to hold line as it grows
                $hText_Label = GUICtrlCreateLabel("", 0, 0)
                ; Initialise Point32 method
                $hWnd = ControlGetHandle($hGui, "", $hText_Label)
                $hFont = _SendMessage($hWnd, $WM_GETFONT)
                $hDC = _WinAPI_GetDC($hWnd)
                $oFont = _WinAPI_SelectObject($hDC, $hFont)
                If $oFont = 0 Then Return SetError(3, 0, 0)
                
                ; Zero counter
                $iWrap_Count = 0

                While 1
                    
                    ; Set line width to 0
                    $iLine_Width = 0
                    ; Initialise pointer for end of word
                    $iLast_Word = 0
                    
                    For $i = 1 To StringLen($asLines[$j])

                        ; Is this just past a word ending?
                        If StringMid($asLines[$j], $i, 1) = " " Then $iLast_Word = $i - 1
                        ; Increase line by one character
                        $sTest_Line = StringMid($asLines[$j], 1, $i)
                        ; Place line in label
                        GUICtrlSetData($hText_Label, $sTest_Line)
                        ; Get line length
                        $tSize = _WinAPI_GetTextExtentPoint32($hDC, $sTest_Line)
                        $iLine_Width = DllStructGetData($tSize, "X")
                        
                        ; If too long exit the loop
                        If $iLine_Width >= $iWidth - Int($iSize / 2) Then ExitLoop
                    Next
                        
                    ; End of the line of text?
                    If $i > StringLen($asLines[$j]) Then
                        ; Yes, so add final line to count
                        $iWrap_Count += 1
                        ; Store line
                        $avSize_Info[0] &= $sTest_Line & @CRLF
                        ExitLoop
                    Else
                        ; No, but add line just completed to count
                        $iWrap_Count += 1
                        ; Check at least 1 word completed or return error
                        If $iLast_Word = 0 Then
                            GUIDelete($hGUI)
                            Return SetError(4, 0, 0)
                        EndIf
                        ; Store line up to end of last word
                        $avSize_Info[0] &= StringLeft($sTest_Line, $iLast_Word) & @CRLF
                        ; Strip string to point reached
                        $asLines[$j] = StringTrimLeft($asLines[$j], $iLast_Word)
                        ; Trim leading whitespace
                        $asLines[$j] = StringStripWS($asLines[$j], 1)
                        ; Repeat with remaining characters in line
                    EndIf
                    
                WEnd
                
                ; Add the number of wrapped lines to the count
                $iLine_Count += $iWrap_Count
                
                ; Clean up
                _WinAPI_ReleaseDC($hWnd, $hDC)
                GUICtrlDelete($hText_Label)
                
            EndIf
            
        Next
        
        ; Convert lines to pixels and add reduced margin
        $avSize_Info[3] = ($iLine_Count * $avSize_Info[1]) + 4
        
    EndIf

    ; Clean up
    GUIDelete($hGUI)
    
    ; Return array
    Return $avSize_Info

EndFunc ; => _StringSize

;Script End

Melba23 · September 26, 2009

gregnottage,

Sorry about the delay in replying - I was on holiday for the past few weeks.

In my opinion, you are overcomplicating things a bit. As you want a fixed width GUI, the only real variable is the height of the label. Once you have that, the rest is simple maths. Take a look at this - I have commented the process:

;Set AutoIt options
AutoItSetOption("TrayIconDebug", 0); Show debug info in tray icon
AutoItSetOption("WinTitleMatchMode", 2); 2 = Match any substring in title
AutoItSetOption("TrayIconHide", 1); 0 = do not hide, 1 = hide tray icon
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include-once
#include <WindowsConstants.au3>
#include <SendMessage.au3>
#include <WinAPI.au3>

;Declare Variables
$strMsg1 = "This is a long message for testing purposes to push the text onto two lines"
;$strMsg1 = "This is a shorter message for testing"
;$strMsg1 = "This is a  very long message for longer testing purposes to push the text onto three lines ...."
$strMsg2 = "Next Line"
$strMsg3 = "Please wait..."
$strFullText = $strMsg1 & @CRLF & @CRLF & $strMsg2 & @CRLF & @CRLF & $strMsg3; Build the message text
$sFont = "Arial"
$iSize = 14
$iWeight = 400
$iAttrib = 0
$iMaxWidth = 360
$iFrmWidth = 400
$iFrmHeight = 300
$iFrmLeft = 425
$iFrmTop = 15
$iPercent = 0

;Main Script
GUICreate("ScreenMsg", $iFrmWidth, $iFrmHeight, $iFrmLeft, $iFrmTop, BitOR($WS_DLGFRAME, $WS_POPUP, $WS_CLIPSIBLINGS), BitOR($WS_EX_TOPMOST, $WS_EX_WINDOWEDGE))
GUISetBkColor(0x000000)
$aMsgReturn = _StringSize($strFullText, $iSize, $iWeight, $iAttrib, $sFont, $iMaxWidth)
$hLabel = GUICtrlCreateLabel($aMsgReturn[0], 10, 80, $aMsgReturn[2], $aMsgReturn[3], $SS_CENTER)
GUICtrlSetFont(-1, $iSize, $iWeight, $iAttrib, $sFont)
GUICtrlSetColor(-1, 0xC0C0C0)
$iMidFrm = $iFrmWidth / 2; Middle of Form
$iMidLbl = $aMsgReturn[2] / 2; Middle of Label
$iLeftPos = $iMidFrm - $iMidLbl; Left positioning for label
GUICtrlSetPos(-1, $iLeftPos, 80)
;Workout where to place the form
$iFrmLeft = (@DesktopWidth / 2) - $iMidFrm
$aiPos = ControlGetPos("ScreenMsg", "", $hLabel)
$iProgTop = $aiPos[1] + $aiPos[3]
$iProgTop = $aiPos[1] + $aiPos[3] + 30
$iProgLeft = $iMidFrm - (350 / 2)
$Progress = GUICtrlCreateProgress($iProgLeft, $iProgTop, 350, 21)
$iPos = ControlGetPos("ScreenMsg", "", $Progress)
$iFrmHeight = $iPos[1] + $iPos[3] + 30
WinMove("ScreenMsg", "", $iFrmLeft, $iFrmTop, $iFrmWidth, $iFrmHeight)
GUISetState(@SW_SHOW)

; We know all the widths because you set the max value, so all we are interested in is the height of the message
; First measure the message to get the label height in $aMsgReturn[3]
$aMsgReturn = _StringSize($strFullText, $iSize, $iWeight, $iAttrib, $sFont, $iMaxWidth)
; You have set the top of the label at a margin of 80 so we now know that the bottom of the label is $aMsgReturn[3] + 80
; Assume a further margin of 20 to the progressbar - which must therefore start at $aMsgReturn[3] + 100
; You have set the progressbar to a height of 21, add another 30 as a final margin below and we get a form height of $aMsgReturn[3] + 151
; Now we can create the form and place the controls
; Note I have deliberately added 300 to $iFrmTop to get the 2 versions to show together
$hGUI = GUICreate("ScreenMsg", $iFrmWidth, $aMsgReturn[3] + 151, -1, $iFrmTop + 300, BitOR($WS_DLGFRAME, $WS_POPUP, $WS_CLIPSIBLINGS), BitOR($WS_EX_TOPMOST, $WS_EX_WINDOWEDGE))
GUISetBkColor(0x000000)
$hLabel = GUICtrlCreateLabel($aMsgReturn[0], 20, 80, $iMaxWidth, $aMsgReturn[3], $SS_CENTER)
GUICtrlSetFont(-1, $iSize, $iWeight, $iAttrib, $sFont)
GUICtrlSetColor(-1, 0xC0C0C0)
$Progress = GUICtrlCreateProgress(25, $aMsgReturn[3] + 100, 350, 21)
GUISetState(@SW_SHOW)

While 1
    ;$iPercent = IniRead(@ScriptDir & "\Progress.INI", "ProgressBar", "PercentCompleted", "0")
    ;GUICtrlSetData($Progress, $iPercent)

    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit

    EndSwitch
WEnd

;Define Functions
; #FUNCTION# =======================================================================================
;
; Name...........: _StringSize
; Description ...: Returns size of rectangle required to display string - width can be chosen
; Syntax ........: _StringSize($sText[, $iSize[, $iWeight[, $iAttrib[, $sName[, $iWidth]]]]])
; Parameters ....: $sText   - String to display
;                  $iSize   - Font size in points - default AutoIt GUI default
;                  $iWeight - Font weight (400 = normal) - default AutoIt GUI default
;                  $iAttrib - Font attribute (0-Normal, 2-Italic, 4-Underline, 8 Strike - default AutoIt
;                  $sName   - Font name - default AutoIt GUI default
;                  $iWidth  - [optional] Width of rectangle - default is unwrapped width of string
; Requirement(s) : v3.2.12.1 or higher
; Return values .: Success - Returns array with details of rectangle required for text:
;                  |$array[0] = String formatted with @CRLF at required wrap points
;                  |$array[1] = Height of single line in selected font
;                  |$array[2] = Width of rectangle required to hold formatted string
;                  |$array[3] = Height of rectangle required to hold formatted string
;                  Failure - Returns 0 and sets @error:
;                  |1 - Incorrect parameter type (@extended = parameter index)
;                  |2 - Failure to create GUI to test label size
;                  |3 - Failure of _WinAPI_SelectObject
;                  |4 - Font too large for chosen width - longest word will not fit
; Author ........: Melba23
; Modified ......:
; Remarks .......:
; Related .......:
; Link ..........:
; Example .......: Yes
;===================================================================================================
Func _StringSize($sText, $iSize = Default, $iWeight = Default, $iAttrib = Default, $sName = Default, $iWidth = 0)

    Local $hWnd, $hFont, $hDC, $oFont, $tSize, $hGUI, $hText_Label, $sTest_Line
    Local $iLine_Count, $iLine_Width, $iWrap_Count, $iLast_Word
    Local $asLines[1], $avSize_Info[4], $aiPos[4]

    ; Check parameters are correct type
    If Not IsString($sText) Then Return SetError(1, 1, 0)
    If Not IsNumber($iSize) And $iSize <> Default   Then Return SetError(1, 2, 0)
    If Not IsInt($iWeight)  And $iWeight <> Default Then Return SetError(1, 3, 0)
    If Not IsInt($iAttrib)  And $iAttrib <> Default Then Return SetError(1, 4, 0)
    If Not IsString($sName) And $sName <> Default   Then Return SetError(1, 5, 0)
    If Not IsNumber($iWidth) Then Return SetError(1, 6, 0)

    ; Create GUI to contain test labels, set to passed font parameters
    $hGUI = GUICreate("", 1200, 500, 10, 10)
        If $hGUI = 0 Then Return SetError(2, 0, 0)
        GUISetFont($iSize, $iWeight, $iAttrib, $sName)

    ; Store unwrapped text
    $avSize_Info[0] = $sText

    ; Ensure EoL is @CRLF and break text into lines
    If StringInStr($sText, @CRLF) = 0 Then StringRegExpReplace($sText, "[x0a|x0d]", @CRLF)
    $asLines = StringSplit($sText, @CRLF, 1)

    ; Draw label with unwrapped lines to check on max width
    $hText_Label = GUICtrlCreateLabel($sText, 10, 10)
    $aiPos = ControlGetPos($hGUI, "", $hText_Label)
    GUICtrlDelete($hText_Label)

    ; Store line height for this font size after removing label padding (always 8)
    $avSize_Info[1] = ($aiPos[3] - 8)/ $asLines[0]
    ; Store width and height of this label
    $avSize_Info[2] = $aiPos[2]
    $avSize_Info[3] = $aiPos[3] - 4 ; Reduce margin

    ; Check if wrapping is required
    If $aiPos[2] > $iWidth And $iWidth > 0 Then

        ; Set returned text element to null
        $avSize_Info[0] = ""

        ; Set width element to max allowed
        $avSize_Info[2] = $iWidth

        ; Set line count to zero
        $iLine_Count = 0

        ; Take each line in turn
        For $j = 1 To $asLines[0]

            ; Size this line unwrapped
            $hText_Label = GUICtrlCreateLabel($asLines[$j], 10, 10)
            $aiPos = ControlGetPos($hGUI, "", $hText_Label)
            GUICtrlDelete($hText_Label)

            ; Check wrap status
            If $aiPos[2] < $iWidth Then
                ; No wrap needed so count line and store
                $iLine_Count += 1
                $avSize_Info[0] &= $asLines[$j] & @CRLF
            Else
                ; Wrap needed so need to count wrapped lines

                ; Create label to hold line as it grows
                $hText_Label = GUICtrlCreateLabel("", 0, 0)
                ; Initialise Point32 method
                $hWnd = ControlGetHandle($hGui, "", $hText_Label)
                $hFont = _SendMessage($hWnd, $WM_GETFONT)
                $hDC = _WinAPI_GetDC($hWnd)
                $oFont = _WinAPI_SelectObject($hDC, $hFont)
                If $oFont = 0 Then Return SetError(3, 0, 0)

                ; Zero counter
                $iWrap_Count = 0

                While 1

                    ; Set line width to 0
                    $iLine_Width = 0
                    ; Initialise pointer for end of word
                    $iLast_Word = 0

                    For $i = 1 To StringLen($asLines[$j])

                        ; Is this just past a word ending?
                        If StringMid($asLines[$j], $i, 1) = " " Then $iLast_Word = $i - 1
                        ; Increase line by one character
                        $sTest_Line = StringMid($asLines[$j], 1, $i)
                        ; Place line in label
                        GUICtrlSetData($hText_Label, $sTest_Line)
                        ; Get line length
                        $tSize = _WinAPI_GetTextExtentPoint32($hDC, $sTest_Line)
                        $iLine_Width = DllStructGetData($tSize, "X")

                        ; If too long exit the loop
                        If $iLine_Width >= $iWidth - Int($iSize / 2) Then ExitLoop
                    Next

                    ; End of the line of text?
                    If $i > StringLen($asLines[$j]) Then
                        ; Yes, so add final line to count
                        $iWrap_Count += 1
                        ; Store line
                        $avSize_Info[0] &= $sTest_Line & @CRLF
                        ExitLoop
                    Else
                        ; No, but add line just completed to count
                        $iWrap_Count += 1
                        ; Check at least 1 word completed or return error
                        If $iLast_Word = 0 Then
                            GUIDelete($hGUI)
                            Return SetError(4, 0, 0)
                        EndIf
                        ; Store line up to end of last word
                        $avSize_Info[0] &= StringLeft($sTest_Line, $iLast_Word) & @CRLF
                        ; Strip string to point reached
                        $asLines[$j] = StringTrimLeft($asLines[$j], $iLast_Word)
                        ; Trim leading whitespace
                        $asLines[$j] = StringStripWS($asLines[$j], 1)
                        ; Repeat with remaining characters in line
                    EndIf

                WEnd

                ; Add the number of wrapped lines to the count
                $iLine_Count += $iWrap_Count

                ; Clean up
                _WinAPI_ReleaseDC($hWnd, $hDC)
                GUICtrlDelete($hText_Label)

            EndIf

        Next

        ; Convert lines to pixels and add reduced margin
        $avSize_Info[3] = ($iLine_Count * $avSize_Info[1]) + 4

    EndIf

    ; Clean up
    GUIDelete($hGUI)

    ; Return array
    Return $avSize_Info

EndFunc ; => _StringSize

;Script End

You can see that the 2 versions of the GUI are (as near as I can get them) identical. But try using the other versions of $strMsg1 - you will see that my version copes a bit better with the changing size of the label.

Please ask if anything is unclear.

M23

gregnottage · September 28, 2009

Hi Melba,

Thanks for replying ;-)

I did actually devise a workaround, which seems to be working. I'll post all my code below - but the 'magic' that helped me was to use the GUICtrlSetResizing($hLabel, $GUI_DOCKALL)command. This allowed me to resize everything without it all looking weird.

#Region ;**** Directives created by AutoIt3Wrapper_GUI ****
#AutoIt3Wrapper_Res_Comment=Script to display a message on-screen with progress bar
#EndRegion ;**** Directives created by AutoIt3Wrapper_GUI ****
#cs ----------------------------------------------------------------------------------

 AutoIt Version: v3.3.0.0

 Script Function:
    
    Script to display a message on-screen with progress bar
    
#ce ----------------------------------------------------------------------------------

;Script Start

;Set AutoIt options
AutoItSetOption("TrayIconDebug", 0); Show debug info in tray icon
AutoItSetOption("WinTitleMatchMode", 2); 2 = Match any substring in title
AutoItSetOption("TrayIconHide", 1); 0 = do not hide, 1 = hide tray icon
;AutoItSetOption("GUIOnEventMode", 1); Enable/disable OnEvent functions notifications. 0 = (default) disable, 1 = enable
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include-once
#include <WindowsConstants.au3>
#include <SendMessage.au3>
#include <WinAPI.au3>
#include <Array.au3>

;Declare Variables
$strMsg1 = IniRead(@ScriptDir & "\Progress.INI", "Message", "Msg1", "Message1")
$strMsg2 = IniRead(@ScriptDir & "\Progress.INI", "Message", "Msg2", "Message2")
$strMsg3 = IniRead(@ScriptDir & "\Progress.INI", "Message", "Msg3", "Please wait...")
$strFullText = $strMsg1 & @CRLF & @CRLF & $strMsg2 & @CRLF & @CRLF & $strMsg3; Build the message text
$sFont = "Arial"
$iSize = 12
$iWeight = 551
$iAttrib = 0
$iMaxWidth = 320
$iFrmWidth = 360
$iFrmHeight = 300
$iFrmLeft = 425
$iFrmTop = 15
$iPercent = 0
$iPicWidth = 225
$iPicHeight = 97

;Main Script
GUICreate("ScreenMsg", $iFrmWidth, $iFrmHeight, $iFrmLeft, $iFrmTop, BitOR($WS_DLGFRAME,$WS_POPUP,$WS_CLIPSIBLINGS), $WS_EX_WINDOWEDGE)
    GUISetBkColor(0x000000)
    $oPic1 = GUICtrlCreatePic(@ScriptDir & "\logo.bmp", 0, 20, $iPicWidth, $iPicHeight, BitOR($SS_NOTIFY,$WS_GROUP,$WS_CLIPSIBLINGS))
    $aMsgReturn = _StringSize($strFullText, $iSize, $iWeight, $iAttrib, $sFont, $iMaxWidth)
        $hLabel = GUICtrlCreateLabel($aMsgReturn[0], 10, 80, $aMsgReturn[2], $aMsgReturn[3], $SS_CENTER)
            GUICtrlSetFont(-1, $iSize, $iWeight, $iAttrib, $sFont)
            GUICtrlSetColor(-1, 0xC0C0C0)
            $iMidFrm = $iFrmWidth/2; Middle of Form
            $iMidLbl = $aMsgReturn[2]/2; Middle of Label
            $iLeftPos = $iMidFrm - $iMidLbl; Left positioning for label
            GUICtrlSetPos (-1, $iLeftPos, 130)
            GUICtrlSetResizing($hLabel, $GUI_DOCKALL); so the control will not move during resizing
    ;Workout where to place the form
    $iFrmLeft = (@DesktopWidth / 2) - $iMidFrm
    $aiPos = ControlGetPos("ScreenMsg", "", $hLabel)
    $iProgTop = $aiPos[1] + $aiPos[3]
    $iProgTop = $aiPos[1] + $aiPos[3] + 20
    $iProgLeft = $iMidFrm - 162; Which is the width of the control/2 ,i.e. (350/2)
    $Progress = GUICtrlCreateProgress($iProgLeft, $iProgTop, 320, 21, $SS_CENTER)
    GUICtrlSetResizing($Progress, $GUI_DOCKALL)
    $iPos = ControlGetPos("ScreenMsg", "", $Progress)
    $iFrmHeight = $iPos[1] + $iPos[3] + 27
    $iMidPic = $iPicWidth/2; Middle of picture
    $iPicLeft = $iMidFrm - $iMidPic
    GUICtrlSetPos($oPic1, $iPicLeft, 20, $iPicWidth, $iPicHeight)
    GUICtrlSetResizing($oPic1, $GUI_DOCKALL)
    WinMove("ScreenMsg", "", $iFrmLeft, $iFrmTop, $iFrmWidth, $iFrmHeight)
GUISetState(@SW_SHOW)

While 1
    $iPercent = IniRead(@ScriptDir & "\Progress.INI", "ProgressBar", "PercentCompleted", "0")
    GUICtrlSetData($Progress, $iPercent)

    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit

    EndSwitch
WEnd

;Define Functions
; #FUNCTION# =======================================================================================
;
; Name...........: _StringSize
; Description ...: Returns size of rectangle required to display string - width can be chosen
; Syntax ........: _StringSize($sText[, $iSize[, $iWeight[, $iAttrib[, $sName[, $iWidth]]]]])
; Parameters ....: $sText   - String to display
;                  $iSize   - Font size in points - default AutoIt GUI default
;                  $iWeight - Font weight (400 = normal) - default AutoIt GUI default
;                  $iAttrib - Font attribute (0-Normal, 2-Italic, 4-Underline, 8 Strike - default AutoIt
;                  $sName   - Font name - default AutoIt GUI default
;                  $iWidth  - [optional] Width of rectangle - default is unwrapped width of string
; Requirement(s) : v3.2.12.1 or higher
; Return values .: Success - Returns array with details of rectangle required for text:
;                  |$array[0] = String formatted with @CRLF at required wrap points
;                  |$array[1] = Height of single line in selected font
;                  |$array[2] = Width of rectangle required to hold formatted string
;                  |$array[3] = Height of rectangle required to hold formatted string
;                  Failure - Returns 0 and sets @error:
;                  |1 - Incorrect parameter type (@extended = parameter index)
;                  |2 - Failure to create GUI to test label size
;                  |3 - Failure of _WinAPI_SelectObject
;                  |4 - Font too large for chosen width - longest word will not fit
; Author ........: Melba23
; Modified ......:
; Remarks .......:
; Related .......:
; Link ..........:
; Example .......: Yes
;===================================================================================================
Func _StringSize($sText, $iSize = Default, $iWeight = Default, $iAttrib = Default, $sName = Default, $iWidth = 0)
    
    Local $hWnd, $hFont, $hDC, $oFont, $tSize, $hGUI, $hText_Label, $sTest_Line
    Local $iLine_Count, $iLine_Width, $iWrap_Count, $iLast_Word
    Local $asLines[1], $avSize_Info[4], $aiPos[4]
    
    ; Check parameters are correct type
    If Not IsString($sText) Then Return SetError(1, 1, 0)
    If Not IsNumber($iSize) And $iSize <> Default   Then Return SetError(1, 2, 0)
    If Not IsInt($iWeight)  And $iWeight <> Default Then Return SetError(1, 3, 0)
    If Not IsInt($iAttrib)  And $iAttrib <> Default Then Return SetError(1, 4, 0)
    If Not IsString($sName) And $sName <> Default   Then Return SetError(1, 5, 0)
    If Not IsNumber($iWidth) Then Return SetError(1, 6, 0)

    ; Create GUI to contain test labels, set to passed font parameters 
    $hGUI = GUICreate("", 1200, 500, 10, 10)
        If $hGUI = 0 Then Return SetError(2, 0, 0)
        GUISetFont($iSize, $iWeight, $iAttrib, $sName)
    
    ; Store unwrapped text
    $avSize_Info[0] = $sText
    
    ; Ensure EoL is @CRLF and break text into lines
    If StringInStr($sText, @CRLF) = 0 Then StringRegExpReplace($sText, "[x0a|x0d]", @CRLF)
    $asLines = StringSplit($sText, @CRLF, 1)
        
    ; Draw label with unwrapped lines to check on max width
    $hText_Label = GUICtrlCreateLabel($sText, 10, 10)
    $aiPos = ControlGetPos($hGUI, "", $hText_Label)
    GUICtrlDelete($hText_Label)
    
    ; Store line height for this font size after removing label padding (always 8)
    $avSize_Info[1] = ($aiPos[3] - 8)/ $asLines[0]
    ; Store width and height of this label
    $avSize_Info[2] = $aiPos[2]
    $avSize_Info[3] = $aiPos[3] - 4 ; Reduce margin
    
    ; Check if wrapping is required
    If $aiPos[2] > $iWidth And $iWidth > 0 Then
        
        ; Set returned text element to null
        $avSize_Info[0] = ""
        
        ; Set width element to max allowed
        $avSize_Info[2] = $iWidth
        
        ; Set line count to zero
        $iLine_Count = 0
        
        ; Take each line in turn
        For $j = 1 To $asLines[0]
            
            ; Size this line unwrapped
            $hText_Label = GUICtrlCreateLabel($asLines[$j], 10, 10)
            $aiPos = ControlGetPos($hGUI, "", $hText_Label)
            GUICtrlDelete($hText_Label)
            
            ; Check wrap status
            If $aiPos[2] < $iWidth Then
                ; No wrap needed so count line and store
                $iLine_Count += 1
                $avSize_Info[0] &= $asLines[$j] & @CRLF
            Else
                ; Wrap needed so need to count wrapped lines
                
                ; Create label to hold line as it grows
                $hText_Label = GUICtrlCreateLabel("", 0, 0)
                ; Initialise Point32 method
                $hWnd = ControlGetHandle($hGui, "", $hText_Label)
                $hFont = _SendMessage($hWnd, $WM_GETFONT)
                $hDC = _WinAPI_GetDC($hWnd)
                $oFont = _WinAPI_SelectObject($hDC, $hFont)
                If $oFont = 0 Then Return SetError(3, 0, 0)
                
                ; Zero counter
                $iWrap_Count = 0

                While 1
                    
                    ; Set line width to 0
                    $iLine_Width = 0
                    ; Initialise pointer for end of word
                    $iLast_Word = 0
                    
                    For $i = 1 To StringLen($asLines[$j])

                        ; Is this just past a word ending?
                        If StringMid($asLines[$j], $i, 1) = " " Then $iLast_Word = $i - 1
                        ; Increase line by one character
                        $sTest_Line = StringMid($asLines[$j], 1, $i)
                        ; Place line in label
                        GUICtrlSetData($hText_Label, $sTest_Line)
                        ; Get line length
                        $tSize = _WinAPI_GetTextExtentPoint32($hDC, $sTest_Line)
                        $iLine_Width = DllStructGetData($tSize, "X")
                        
                        ; If too long exit the loop
                        If $iLine_Width >= $iWidth - Int($iSize / 2) Then ExitLoop
                    Next
                        
                    ; End of the line of text?
                    If $i > StringLen($asLines[$j]) Then
                        ; Yes, so add final line to count
                        $iWrap_Count += 1
                        ; Store line
                        $avSize_Info[0] &= $sTest_Line & @CRLF
                        ExitLoop
                    Else
                        ; No, but add line just completed to count
                        $iWrap_Count += 1
                        ; Check at least 1 word completed or return error
                        If $iLast_Word = 0 Then
                            GUIDelete($hGUI)
                            Return SetError(4, 0, 0)
                        EndIf
                        ; Store line up to end of last word
                        $avSize_Info[0] &= StringLeft($sTest_Line, $iLast_Word) & @CRLF
                        ; Strip string to point reached
                        $asLines[$j] = StringTrimLeft($asLines[$j], $iLast_Word)
                        ; Trim leading whitespace
                        $asLines[$j] = StringStripWS($asLines[$j], 1)
                        ; Repeat with remaining characters in line
                    EndIf
                    
                WEnd
                
                ; Add the number of wrapped lines to the count
                $iLine_Count += $iWrap_Count
                
                ; Clean up
                _WinAPI_ReleaseDC($hWnd, $hDC)
                GUICtrlDelete($hText_Label)
                
            EndIf
            
        Next
        
        ; Convert lines to pixels and add reduced margin
        $avSize_Info[3] = ($iLine_Count * $avSize_Info[1]) + 4
        
    EndIf

    ; Clean up
    GUIDelete($hGUI)
    
    ; Return array
    Return $avSize_Info

EndFunc ; => _StringSize

;Script End

The progress.ini looks like this:

[Message]
Msg1=TypeMessage1here
Msg2=TypeMessage2here
Msg3=Please wait...

[ProgressBar]
PercentCompleted=0

I also wrote a little app that can increment the progress bar by updating the percentage in the progress.ini file. All you need to do is run it, with a number as the first command line argument - then it will write that number as the percentage in the progres.ini (and thereby increment the progress bar on the message window).

#Region ;**** Directives created by AutoIt3Wrapper_GUI ****
#AutoIt3Wrapper_Res_Comment=Script to update the progress bar INI file
#EndRegion ;**** Directives created by AutoIt3Wrapper_GUI ****
#cs ----------------------------------------------------------------------------

 AutoIt Version: v3.3.0.0

 Script Function:
    Script to update the progress bar INI file with percentage
    
#ce ----------------------------------------------------------------------------

;Script Start

;Set AutoIt options
AutoItSetOption("TrayIconDebug", 1); Show debug info in tray icon
AutoItSetOption("WinTitleMatchMode", 2); 2 = Match any substring in title
AutoItSetOption("TrayIconHide", 1); 0 = do not hide, 1 = hide tray icon

;_ErrorMsg("")

;Set Variables
If $cmdline[0] = 0 Then
    ;Check if no cmdline params specified, show message
    _ErrorMsg("No command line parameters specified!")
    Exit
ElseIf $cmdline[0] > 1 Then
    ;Check number of params - if more than 1, show message
    _ErrorMsg("Please only use a single command line parameter!")
    Exit
EndIf

;Read percentage specified via command line parameter
$intPercent = Number($cmdline[1])

;Read current percentage in Progress.INI file
$intCurProgress = IniRead(@ScriptDir & "\Progress.INI", "ProgressBar", "PercentCompleted", 0)

;Main Script

If $intCurProgress <100 Then
    ;Check cmdline number between 1-100 and do stuff
    If $intPercent >=1 And $intPercent <=100 Then
        ;MsgBox(0, "Info", "Percent specified is: " & $intPercent)
        $intNewPercent = $intPercent + $intCurProgress
        IniWrite(@ScriptDir & "\Progress.INI", "ProgressBar", "PercentCompleted", $intNewPercent)
        Exit
    Else
        _ErrorMsg("Please specify a number between 1 and 100")
    EndIf
Else
    ;_ErrorMsg("Progress complete")
    Exit
EndIf

;Define functions
Func _ErrorMsg($strErrMsg)
    MsgBox(262192, "Error", $strErrMsg); Show the error message with topmost window
EndFunc; =>__ErrorMsg()

;Script End

I'm sure your way is more elegant than my cludgy code, but it seems to work OK for what I need. If you have any recommendations or suggestions on how to improve what I've done, please let me know.

Once again, thanks very much for responding! I'd be lost without the kind and helpful support that people share on this forum!!!

Many thanks and kind regards,

Greg.

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