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bug with SetParent?

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If there is no component in a gui then setting it as the parent for another gui stops it handling messages properly and It can't be activated. The caption bar icons no longer work but it can be maximized or restrored by double clicking on the title bar.


#include <StructureConstants.au3>

#include <WindowsConstants.au3>

#include <GUIConstantsEx.au3>

#include <WinAPI.au3>

$hGUI = GUICreate("Test", 500, 500)

;must have at least one component- see below

;components must have clipsiblings style or complete mess can result

;GUICtrlCreateButton("gg", 10, 30, 120, 21,$WS_CLIPSIBLINGS);replace this button and problem is removed


$hTT = GUICreate("tooltip", 200,200,0,0)


;if there are no components in the main window then things go wrong - I think this is a bug

DllCall("user32.dll", "int", "SetParent", "hwnd", $hTT, "hwnd", $hGUI)


winactivate($hGUI);no effect

While 1

Switch GUIGetMsg()






Does anyone agree that this is a bug?

Edited by martin

Serial port communications UDF Includes functions for binary transmission and reception.printing UDF Useful for graphs, forms, labels, reports etc.Add User Call Tips to SciTE for functions in UDFs not included with AutoIt and for your own scripts.Functions with parameters in OnEvent mode and for Hot Keys One function replaces GuiSetOnEvent, GuiCtrlSetOnEvent and HotKeySet.UDF IsConnected2 for notification of status of connected state of many urls or IPs, without slowing the script.

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I posted about a similar thing a while ago and no-one had an explanation then:

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

Global $hMain, $ahChild[1][2] = [[0, 0]], $SC_MOVE = 0xF010
$hMain = GUICreate("Parent Window", 633, 447, 192, 200)
GUICtrlCreateLabel("", 0, 0, 0, 0) ; <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
$mMain = GUICtrlCreateMenu("New")
$mChild = GUICtrlCreateMenuItem("Child", $mMain)

; Prevent maximised children being moved

While 1
    ; Use advanced GUIGetMsg to distinguish between windows
    $aMsg = GUIGetMsg(1)
    Switch $aMsg[1]
        ; It is the parent
        Case $hMain
            ; Now check the message
            Switch $aMsg[0]
                Case $GUI_EVENT_CLOSE
                Case $mChild
        ; Must be a child
        Case Else
            ; But which one?
            For $i = 1 To $ahChild[0][0]
                If $aMsg[1] = $ahChild[$i][0] Then
                    ; Check the message
                    Switch $aMsg[0]
                        Case $GUI_EVENT_CLOSE
                        Case $GUI_EVENT_MAXIMIZE
                            ; Set the Maximised flag
                            $ahChild[$i][1] = True
                        Case $GUI_EVENT_MINIMIZE
                            ; Clear the Maximised flag
                            $ahChild[$i][1] = False
                        Case $GUI_EVENT_RESTORE
                            ; Clear the Maximised flag
                            $ahChild[$i][1] = False

Func CreateChild()
    $hNew_Child = GUICreate("Child " & $ahChild[0][0] + 1, 300, 300, 10, 0, BitOR($GUI_SS_DEFAULT_GUI , $WS_MAXIMIZEBOX))
    _WinAPI_SetParent($hNew_Child, $hMain)
    Add($ahChild, $hNew_Child)
EndFunc   ;==>CreateChild

Func Add(ByRef $aArray, $hHandle)
    ; Increase the number of children
    $aArray[0][0] += 1
    ; Resize the array
    ReDim $aArray[$aArray[0][0] + 1][2]
    ; Add the child details
    $aArray[$aArray[0][0]][0] = $hHandle
    $aArray[$aArray[0][1]][1] = False
EndFunc   ;==>Add

Func On_WM_SYSCOMMAND($hWnd, $Msg, $wParam, $lParam)

    For $i = 1 To $ahChild[0][0]
        ; Does the message come from a child?
        If $hWnd = $ahChild[$i][0] Then
            ; Is the child maximised?
            If $ahChild[$i][1] Then
                ;Is it a MOVE mesage?
                If BitAND($wParam, 0xFFF0) = $SC_MOVE Then Return False

EndFunc   ;==>On_WM_SYSCOMMAND

If you comment out the <<<<<<<<<<<<<<<< label you get the same effect.

So I agree that it is a bug. :)


Edit: Added correct link!

Edited by Melba23

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 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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For long time.. :idiot:

I found example script load PNG file from this forum.. and modif with setparent but not work..???

#include <GDIPlus.au3>
#include <WindowsConstants.au3>
#include <GuiConstantsEx.au3>
#include <WinAPI.au3>

_GUICreate_Alpha("butter.png", -1, 0, 50,50)

While 1
$msg = GUIGetMsg()
If $msg = $GUI_EVENT_CLOSE Then ExitLoop

Func _GUICreate_Alpha($ImaGe, $iX, $iY, $Step, $Time)
Local $ParenT, $hImage, $hScrDC, $hMemDC, $hBitmap, $hOld, $pSize, $tSize, $pSource, $tSource, $pBlend, $tBlend
Local $ChilD, $PosHeight, $Sleep, $Slide
$hImage = _GDIPlus_ImageLoadFromFile($ImaGe)
$width = _GDIPlus_ImageGetWidth($hImage)
$height = _GDIPlus_ImageGetHeight($hImage)
$ParenT = GUICreate("ParenT", $width, $height, $iX, $iY , $WS_POPUP ,$WS_EX_LAYERED)
_WinAPI_SetLayeredWindowAttributes($ParenT , 0xABCDEF, 255)
$ChilD = GUICreate("Child", $width, $height, $width, $height , $WS_POPUP, BitOR($WS_EX_LAYERED, $WS_EX_TOPMOST),$ParenT)
$hScrDC = _WinAPI_GetDC(0)
$hMemDC = _WinAPI_CreateCompatibleDC($hScrDC)
$hBitmap = _GDIPlus_BitmapCreateHBITMAPFromBitmap($hImage)
$hOld = _WinAPI_SelectObject($hMemDC, $hBitmap)
$tSize = DllStructCreate($tagSIZE)
$pSize = DllStructGetPtr($tSize)
DllStructSetData($tSize, "X", $width)
DllStructSetData($tSize, "Y", $height)
$tSource = DllStructCreate($tagPOINT)
$pSource = DllStructGetPtr($tSource)
$tBlend = DllStructCreate($tagBLENDFUNCTION)
$pBlend = DllStructGetPtr($tBlend)
DllStructSetData($tBlend, "Alpha", 255)
DllStructSetData($tBlend, "Format", 1)
_WinAPI_UpdateLayeredWindow($ChilD, $hScrDC, 0, $pSize, $hMemDC, $pSource, 0, $pBlend, 2)
_WinAPI_ReleaseDC(0, $hScrDC)
_WinAPI_SelectObject($hMemDC, $hOld)
;DllCall("user32.dll", "int", "SetParent", "hwnd", $ChilD, "hwnd", $ParenT)
_WinAPI_SetParent($ChilD, $ParenT)

$PPos = WinGetPos($ParenT)
$PosWidth= -$width /$Step
$PosHeight= -$height /$Step
$Sleep = $Time / $Step
For $dr = 1 To $Step
$dx = ($PosWidth * $dr)+ ($PPos[0]+$width)
$dy = ($PosHeight * $dr)+ ($PPos[1]+$height)
WinMove($ChilD, "", $dx, $dy)

This script work in windows xp..

For Melba23 / Martin Or for All Master Autoit. How to make script work in windows 7. Thank's :ILA:

Sory for my english.. :idiot:

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