transparency

[Tomb]

would it be possible to get an $WS_EX_LAYERED sort of transparent effect on a child gui with a pic on it which is set a mdi child with DllCall("user32.dll", "hwnd", "SetParent", "hwnd", $CHILD, "hwnd", $GUI).

[martin]

would it be possible to get an $WS_EX_LAYERED sort of transparent effect on a child gui with a pic on it which is set a mdi child with DllCall("user32.dll", "hwnd", "SetParent", "hwnd", $CHILD, "hwnd", $GUI).

I don't think so

$WS_EX_LAYERED 0x00080000 Creates a layered window. Note that this cannot be used for child windows.

But you can have a transparent child window.

I think this example might have been by Siao,

#include <GuiConstantsEx.au3>
#include <windowsconstants.au3>

Const $WS_EX_COMPOSITED = 0x2000000

$Main_GUI = GUICreate("Main",500,500,-1,-1, -1,$WS_EX_COMPOSITED);$WS_EX_TRANSPARENT
;~ GUISetBkColor(0xffffff)
$Btn_Exit = GUICtrlCreateButton("E&xit", 10, 10, 90, 20)
GUICtrlCreateLabel("aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaa",200,80,50,50, -1,$WS_EX_TRANSPARENT)
GUIctrlSetBkColor(-1,$GUI_BKCOLOR_TRANSPARENT)
GUISetState(@SW_SHOW, $Main_GUI)
$Child_GUI = GUICreate("Child", 100, 100, 10, 50, $WS_CHILD, BitOR($WS_EX_TRANSPARENT,$WS_EX_TOPMOST), $Main_GUI)
;~ GUISetBkColor(0xffffff)
$label=GUICtrlCreateLabel("bbbbbbbbbbbbbbb bbbbbbbbbb bbbbbbbbbbbbb bbbbbbbb",5,5,50,50, -1,-1)
GUIctrlSetBkColor(-1,$GUI_BKCOLOR_TRANSPARENT)
$Btn_Test = GUICtrlCreateButton("Test", 10, 10, 90, 20)
GUISetState(@SW_SHOW, $Child_GUI)
$i=10
WinSetState($Main_GUI,"",$GUI_HIDE)
While 1
    $i+=1
    $msg=GUIGetMsg()
    If $msg=$GUI_EVENT_CLOSE Or $msg=$Btn_Exit Then Exit
    If $msg=$Btn_Test Then MsgBox(0, "Test", "Hit Button on Child Window")
   ;WinMove($Child_GUI,"",$i,50)
    ControlMove($Child_GUI,"",$label,5,5+$i)
    Sleep(70)
WEnd

[Tomb]

thanks martin. i think im just trying to do the impossible.

i will look for an alternate solution.

[martin]

thanks martin. i think im just trying to do the impossible.

i will look for an alternate solution.

You could have a window which is layered but not a child and keep it inside the 'parent' by having registering $WM_MOVE and writing some code to keep the layered window within the parent.

Another way is to use $WS_EX_MDICHILD which simulates a child window.

expandcollapse popup

#include <GUIConstants.au3>
#include <misc.au3>
#include <windowsconstants.au3>
#include <editconstants.au3>
#include <sendmessage.au3>
HotKeySet("{F11}","fadeaway")

$gui=GUICreate("test transparentpic", 200, 100,-1,-1);,BitOR($WS_POPUP,$WS_SIZEBOX))
$ed = GUICtrlCreateEdit("hgh",0,0,200,100,BitOR($ES_WANTRETURN, $ES_AUTOVSCROLL, $WS_VSCROLL, $ES_MULTILINE, $ES_NOHIDESEL))
;$pic=GUICreate("", 68, 71, 10, 10,$WS_POPUP,$WS_EX_MDICHILD,$gui);BitOr($WS_EX_LAYERED,$WS_EX_MDICHILD),$gui)
$pic=GUICreate("", 68, 71, 10, 10,$WS_POPUP,BitOr($WS_EX_LAYERED,$WS_EX_MDICHILD),$gui)
$pic1 = GUICtrlCreatePic(@Systemdir & "\oobe\images\merlin.gif",0,0, 0,0)

GUISetState(@SW_SHOW,$pic)
GUISetState(@SW_SHOW,$gui)

HotKeySet("{ESC}", "main")

do
    $msg = GUIGetMsg()
    switch $msg
        Case $pic1
            _SendMessage($gui,$WM_SYSCOMMAND,0xf012);so you can drag by pic
            
    EndSwitch
    
until $msg = $GUI_EVENT_CLOSE
Fadeaway()
sleep(2000)
Exit

Func main()
    $guiPos = WinGetPos($gui)
    WinMove($gui,"",$guiPos[0]+10,$guiPos[1]+10)
EndFunc

Func Fadeaway()
WinSetTrans($gui,'',30) 
    
EndFunc