#include <WindowsConstants.au3>
$Form1 = GUICreate("tttt", 500, 500, -1, -1, $WS_POPUP, $WS_EX_LAYERED)
GUISetBkColor(0xABCDEF)
_API_SetLayeredWindowAttributes($Form1, 0xABCDEF)
$Label1 = GUICtrlCreateLabel("天下无敌", 2, 2, 158, 48, -1)
GUICtrlSetFont(-1, 30, 400, 0, "MS Sans Serif")
GUISetState(@SW_SHOW)
While 1
$nMsg = GUIGetMsg()
Switch $nMsg
Case -3
Exit
EndSwitch
WEnd
Func _API_SetLayeredWindowAttributes($hwnd, $i_transcolor, $Transparency = 255, $isColorRef = False)
Local Const $AC_SRC_ALPHA = 1
Local Const $ULW_ALPHA = 2
Local Const $LWA_ALPHA = 0x2
Local Const $LWA_COLORKEY = 0x1
If Not $isColorRef Then
$i_transcolor = Hex(String($i_transcolor), 6)
$i_transcolor = Execute('0x00' & StringMid($i_transcolor, 5, 2) & StringMid($i_transcolor, 3, 2) & StringMid($i_transcolor, 1, 2))
EndIf
Local $Ret = DllCall("user32.dll", "int", "SetLayeredWindowAttributes", "hwnd", $hwnd, "long", $i_transcolor, "byte", $Transparency, "long", $LWA_COLORKEY + $LWA_ALPHA)
Select
Case @error
Return SetError(@error, 0, 0)
Case $Ret[0] = 0
Return SetError(4, 0, 0)
Case Else
Return 1
EndSelect
EndFunc ;==>_API_SetLayeredWindowAttributes
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