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trouble with WS_EX_LAYERED, .gif and WinSetTrans

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I have a GUI with WS_EX_LAYERED and a .gif in this GUI as the background... the gif is transparent and constitutes the GUI.

But when I'm changing the transparency of the gui with WinSetTrans, the gif will be non-transparent. the background of the gif will be simply white and this is not what I want.

How I fix that?

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I have a GUI with WS_EX_LAYERED and a .gif in this GUI as the background... the gif is transparent and constitutes the GUI.

But when I'm changing the transparency of the gui with WinSetTrans, the gif will be non-transparent. the background of the gif will be simply white and this is not what I want.

How I fix that?

Works fine for me:

#include <GuiConstants.au3>

$hGUI = GUICreate("Test GUI", 300, 200, -1, -1, -1, $WS_EX_LAYERED)

$hPic = GUICtrlCreatePic(@ScriptDir & "\test.gif", 10, 10, 280, 180)
GUICtrlSetState(-1, $GUI_DISABLE)

GUISetState()

For $i = 255 To 0 Step -1
    WinSetTrans($hGUI, "", $i)
    Sleep(100)
Next

Do
Until GUIGetMsg() = -3

test.zip

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hey rasim,

the gif has transparency! when I'm changing the transparency of the win with winsettrans then the transparency of the gif goes away. this is my problem.

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