$WS_EX_MDICHILD bug

[TheAutomator]

Melba23,

its stays open for if you want to click it a second time.

did you maximize the child window and then restored it?

On my computer that seems to be a problem, i wish i could show you this is a more direct way..

here are some screenshots i made:

https://drive.google.com/file/d/0B6ErMbcSk-fWemJ2R1lnOHRUUUk/view?usp=sharing

https://drive.google.com/file/d/0B6ErMbcSk-fWYnlsaWJZNE5lRHc/view?usp=sharing

https://drive.google.com/file/d/0B6ErMbcSk-fWUGp1M25abTFvMWM/view?usp=sharing

https://drive.google.com/file/d/0B6ErMbcSk-fWNl9XMU5jZXBxY00/view?usp=sharing

TheAutomator

[Melba23]

TheAutomator,

I see it. I do not use background images in my GUIs - they cause too many problems, as you are discovering. So I cannot really help any more - sorry.

M23

[TheAutomator]

That's ok Melba23   .

You already helped me a lot the last few days   .

Thanks and regards

TheAutomator

[pixelsearch]

On 2/2/2015 at 5:02 PM, Melba23 said:

TheAutomator,

I see it. I do not use background images in my GUIs - they cause too many problems, as you are discovering. So I cannot really help any more - sorry.

M23

Hi Melba23 & TheAutomator
I just read the long discussion between both of you in this old thread and resurrected it because a simple solution seems to work, it could be helpful for anyone facing the same situation.

Based on the last script posted by TheAutomator (at the very bottom of the precedent page), I added the $WS_EX_COMPOSITED extended style to the parent window and it seems to solve the issues described above by TheAutomator

Please remember to place a pic (named test.jpg) inside the same folder than the script, it will be the parent GUI background image.

expandcollapse popup

#include <EditConstants.au3>
#include <ButtonConstants.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>
#include <WinApi.au3>

$SCREEN = GUICreate('TEST FORM 1', 600, 400, -1, -1, -1, $WS_EX_COMPOSITED)
    GUISetBkColor(0x000000)

$IMAGE = GUICtrlCreatePic('test.jpg', 0, 0, 600, 370)
    GUICtrlSetState(-1, $GUI_DISABLE)

$NEW = GUICtrlCreateButton('NEW', 0, 370, 60, 30)
    GUICtrlSetCursor(-1, 0)

$LST = GUICtrlCreateList('NEW FORM', 0, 190, 120, 200, $WS_BORDER)
    GUICtrlSetData(-1, 'EXIT')
    GUICtrlSetFont(-1, 8, 400, 0, 'System')
    GUICtrlSetColor(-1, 0x00FF00)
    GUICtrlSetBkColor(-1, 0x000000)
    GUICtrlSetState(-1, $GUI_HIDE)

$INP = GUICtrlCreateInput('TESTING...', 460, 372, 100, 28, BitOR($ES_CENTER, $ES_UPPERCASE, $ES_READONLY))
    GUICtrlSetFont(-1, 12, 400, 0, 'MS Sans Serif')
    GUICtrlSetColor(-1, 0x00FF00)
    GUICtrlSetBkColor(-1, 0x000000)
    GUICtrlSetCursor (-1, 2)

GUISetState(@SW_SHOW)

While True
    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE
            Exit

        Case $NEW
            If BitAND(GUICtrlGetState($LST), $GUI_HIDE) = $GUI_HIDE Then
                GUICtrlSetState($LST, $GUI_SHOW + $GUI_ONTOP)
            Else
                GUICtrlSetState($LST, $GUI_HIDE)
            EndIf

        Case $LST
            Switch GUICtrlRead($LST)
                Case 'EXIT'
                    Exit

                Case 'NEW FORM'
                    GUICtrlSetState($LST, $GUI_HIDE)
                    $hNew_Child = GUICreate("Child", 300, 300, 10, 0, $WS_OVERLAPPEDWINDOW, -1, $SCREEN)
                    GUICtrlCreateCheckbox('Filler 1', 10, 10, 120, 25)
                    _WinAPI_SetParent($hNew_Child, $screen)
                    GUISetState()
            EndSwitch

    EndSwitch
WEnd

Some additional changes :
* Clicking the "New" button displays the list on top (added ...+ $GUI_ONTOP)
* Clicking 'NEW FORM' in the list hides the list (leaving the New button always visible, as requested by OP)
* Child window style changed to $WS_OVERLAPPEDWINDOW, which contains all we need.

Edited October 4, 2020 by pixelsearch
description of additional changes