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Restrict GUI Resize with Minimal Dimensions

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Hello... If someone knows if the feature exists or an approach to be able to set the minimal dimensions of a GUI Window for resizing?

Basically I have created a GUI Window set to 800x600 and given the user the ability to resize bigger and even fullscreen it, however I would like to restrict the user from resizing it any smaller than 800x600. Any assistance would be greatly appreciated.


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Easy when you know how! ;)

#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>

Global $GUIMINWID = 300, $GUIMINHT = 100;set your restrictions here
Global $GUIMAXWID = 800, $GUIMAXHT = 500


$hGUI = GUICreate("Test", 500, 500, -1, -1, BitOR($GUI_SS_DEFAULT_GUI, $WS_MAXIMIZEBOX, $WS_SIZEBOX))


$aPos = WinGetPos($hGUI)

While 1
    Switch GUIGetMsg()
            ;WinMove($hGUI, "", $aPos[0], $aPos[1], $aPos[2], $aPos[3])
        Case $GUI_EVENT_CLOSE

Func WM_GETMINMAXINFO($hwnd, $Msg, $wParam, $lParam)
    $tagMaxinfo = DllStructCreate("int;int;int;int;int;int;int;int;int;int", $lParam)
    DllStructSetData($tagMaxinfo, 7, $GUIMINWID) ; min X
    DllStructSetData($tagMaxinfo, 8, $GUIMINHT) ; min Y
    DllStructSetData($tagMaxinfo, 9, $GUIMAXWID ); max X
    DllStructSetData($tagMaxinfo, 10, $GUIMAXHT ) ; max Y
    Return 0

All clear? :)


  • Like 3

Public_Domain.png.2d871819fcb9957cf44f4514551a2935.png Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind._______Open Open spoiler to see my UDFs:


ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area


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I understand your example thanks its very helpful, I wouldn't know that you could do this to have written it myself.

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I have been using this example in a few scripts... works great but unsure how to use this for a non AutoIT window, eg. say i want to restrict Notepad from being resized!?

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