Set transparency on labels

[AustrianOak]

Is it possible to set a label to transparent, or semi-transparent?

[TPlanet]

Hi,

Found this here a month ago, but don't remember who wrote it.... However thank that guy and try this

CODE

#include <GUIConstants.au3>

#include <Constants.au3>

#include <WindowsConstants.au3>

#include <WINAPI.au3>

;############# Constants ##########

Global Const $LWA_ALPHA = 0x2

Global Const $LWA_COLORKEY = 0x1

;############# Example ############

#Region - GUI Create

$gui = GUICreate("trans", 300, 400, -1, -1, -1, $WS_EX_LAYERED)

GUICtrlCreateLabel("This is text on a transparent Layered GUI", 10, 10, 200, 20, -1, $GUI_WS_EX_PARENTDRAG)

GUICtrlSetTip(-1, "Click label to drag layered window")

$layButt = GUICtrlCreateButton("Button", 10, 40, 40)

GUISetBkColor(0xABCDEF)

_WinAPI_SetLayeredWindowAttributes($gui, 0x010101)

GUISetState()

$guicontrol = GUICreate("ControlGUI", 300, 400, 100, 100)

$checkTrans = GUICtrlCreateCheckbox("Transparent color 0xABCDEF (Checked) Or 0x010101", 10, 10)

$checkBorder = GUICtrlCreateCheckbox("POPUP-Style", 10, 30)

GUICtrlCreateLabel("Transparency for Layered GUI", 10, 50)

$slidTrans = GUICtrlCreateSlider(10, 70, 200, 30)

GUICtrlSetLimit($slidTrans, 255, 0)

GUICtrlSetData(-1, 255)

GUISetState()

#EndRegion - GUI Create

#Region - GUI SelectLoop

While 1

$extMsg = GUIGetMsg(1)

$msg = $extMsg[0]

Switch $extMsg[1]

Case $guicontrol

Select

Case $msg = $GUI_EVENT_CLOSE

Exit

Case $msg = $checkTrans Or $msg = $slidTrans

; Change Attributes of Trans-Color and Window Transparency

If BitAND(GUICtrlRead($checkTrans), $GUI_CHECKED) = $GUI_CHECKED Then

_WinAPI_SetLayeredWindowAttributes($gui, 0xABCDEF, GUICtrlRead($slidTrans))

Else

_WinAPI_SetLayeredWindowAttributes($gui, 0x010101, GUICtrlRead($slidTrans))

EndIf

Case $msg = $checkBorder

If BitAND(GUICtrlRead($checkBorder), $GUI_CHECKED) = $GUI_CHECKED Then

GUISetStyle($WS_POPUP, -1, $gui)

Else

GUISetStyle($GUI_SS_DEFAULT_GUI, -1, $gui)

EndIf

EndSelect

Case $gui

Select

Case $msg = $layButt

Dim $transcolor, $alpha

$info = _WinAPI_GetLayeredWindowAttributes($gui,$transcolor, $alpha)

MsgBox(0, 'Layered GUI', "Button on layered Window Clicked" & @CRLF & "Information about this window: " & @CRLF & _

"Transparent Color: " & $transcolor & @CRLF & _

"Alpha Value: " & $alpha & @CRLF & _

"LWA_COLORKEY: " & (BitAND($info,$LWA_COLORKEY)=$LWA_COLORKEY) & @CRLF & _

"LWA_ALPHA: " & (BitAND($info,$LWA_ALPHA)=$LWA_ALPHA) )

Case $msg = $GUI_EVENT_CLOSE

Exit MsgBox(0, '', "Close from Layered GUI")

EndSelect

EndSwitch

WEnd

#EndRegion - GUI SelectLoop

;############# EndExample #########

;===============================================================================

;

; Function Name: _WinAPI_SetLayeredWindowAttributes

; Description:: Sets Layered Window Attributes:) See MSDN for more informaion

; Parameter(s):

; $hwnd - Handle of GUI to work on

; $i_transcolor - Transparent color

; $Transparency - Set Transparancy of GUI

; $isColorRef - If True, $i_transcolor is a COLORREF( 0x00bbggrr ), else an RGB-Color

; Requirement(s): Layered Windows

; Return Value(s): Success: 1

; Error: 0

; @error: 1 to 3 - Error from DllCall

; @error: 4 - Function did not succeed - use

; _WinAPI_GetLastErrorMessage or _WinAPI_GetLastError to get more information

; Author(s): Prog@ndy

;

; Link : @@MsdnLink@@ SetLayeredWindowAttributes

; Example : Yes

;===============================================================================

;

Func _WinAPI_SetLayeredWindowAttributes($hwnd, $i_transcolor, $Transparency = 255, $dwFlages = 0x03, $isColorRef = False)

If $dwFlages = Default Or $dwFlages = "" Or $dwFlages < 0 Then $dwFlages = 0x03

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", $dwFlages)

Select

Case @error

Return SetError(@error, 0, 0)

Case $Ret[0] = 0

Return SetError(4, _WinAPI_GetLastError(), 0)

Case Else

Return 1

EndSelect

EndFunc ;==>_WinAPI_SetLayeredWindowAttributes

;===============================================================================

;

; Function Name: _WinAPI_GetLayeredWindowAttributes

; Description:: Gets Layered Window Attributes:) See MSDN for more informaion

; Parameter(s):

; $hwnd - Handle of GUI to work on

; $i_transcolor - Returns Transparent color ( dword as 0x00bbggrr or string "0xRRGGBB")

; $Transparency - Returns Transparancy of GUI

; $isColorRef - If True, $i_transcolor will be a COLORREF( 0x00bbggrr ), else an RGB-Color

; Requirement(s): Layered Windows

; Return Value(s): Success: Usage of LWA_ALPHA and LWA_COLORKEY (use BitAnd)

; Error: 0

; @error: 1 to 3 - Error from DllCall

; @error: 4 - Function did not succeed

; - use _WinAPI_GetLastErrorMessage or _WinAPI_GetLastError to get more information

; - @extended contains _WinAPI_GetLastError

; Author(s): Prog@ndy

;

; Link : @@MsdnLink@@ GetLayeredWindowAttributes

; Example : Yes

;===============================================================================

;

Func _WinAPI_GetLayeredWindowAttributes($hwnd, ByRef $i_transcolor, ByRef $Transparency,$asColorRef = False)

$i_transcolor = -1

$Transparency = -1

Local $Ret = DllCall("user32.dll", "int", "GetLayeredWindowAttributes", "hwnd", $hwnd, "long*", $i_transcolor, "byte*", $Transparency, "long*", 0)

Select

Case @error

Return SetError(@error, 0, 0)

Case $Ret[0] = 0

Return SetError(4, _WinAPI_GetLastError(), 0)

Case Else

If Not $asColorRef Then

$Ret[2] = Hex(String($Ret[2]), 6)

$Ret[2] = '0x' & StringMid($Ret[2], 5, 2) & StringMid($Ret[2], 3, 2) & StringMid($Ret[2], 1, 2)

EndIf

$i_transcolor = $Ret[2]

$Transparency = $Ret[3]

Return $Ret[4]

EndSelect

EndFunc ;==>_WinAPI_GetLayeredWindowAttributes