TCP Slider

[Klovis]

I want to set this image up to another gui via TCP so I can control the opacity of the image on my laptop with the image on my desktop.

Credit to Paul for code

expandcollapse popup

#include <WinAPI.au3>
#include <GDIPlus.au3>
#include <WindowsConstants.au3>
#include <GUIConstants.au3>

Opt ("MustDelcareVars", 1)

Global Const $AC_SRC_ALPHA = 1

Global $pici, $picw, $data

$data = 255
$picw = GUICreate("Picture", @DesktopWidth, @DesktopHeight, -1, -1, -1, BitOR($WS_EX_TOPMOST,$WS_EX_LAYERED))

_GDIPlus_Startup()
$pici = _GDIPlus_ImageLoadFromFile(@ScriptDir & "\yeahtoy.png")
SetBitMap($picw, $pici, $data)
GUISetState()

GUIRegisterMsg($WM_NCHITTEST, "WM_NCHITTEST")

do
until GUIGetMsg() =$GUI_EVENT_CLOSE

_GDIPlus_ImageDispose($pici)
_GDIPlus_Shutdown()

Func WM_NCHITTEST($hWnd, $iMsg, $iwParam, $ilParam)
  if ($hWnd = $picw) and ($iMsg = $WM_NCHITTEST) then Return $HTCAPTION
EndFunc

Func SetBitmap($picw, $hImage, $iOpacity)
  Local $hScrDC, $hMemDC, $hBitmap, $hOld, $pSize, $tSize, $pSource, $tSource, $pBlend, $tBlend

  $hScrDC  = _WinAPI_GetDC(0)
  $hMemDC  = _WinAPI_CreateCompatibleDC($hScrDC)
  $hBitmap = _GDIPlus_BitmapCreateHBITMAPFromBitmap($pici)
  $hOld    = _WinAPI_SelectObject($hMemDC, $hBitmap)
  $tSize   = DllStructCreate($tagSIZE)
  $pSize   = DllStructGetPtr($tSize  )
  DllStructSetData($tSize, "X", _GDIPlus_ImageGetWidth($pici))
  DllStructSetData($tSize, "Y", _GDIPlus_ImageGetHeight($pici))
  $tSource = DllStructCreate($tagPOINT)
  $pSource = DllStructGetPtr($tSource)
  $tBlend  = DllStructCreate($tagBLENDFUNCTION)
  $pBlend  = DllStructGetPtr($tBlend)
  DllStructSetData($tBlend, "Alpha" , $iOpacity    )
  DllStructSetData($tBlend, "Format", $AC_SRC_ALPHA)
  _WinAPI_UpdateLayeredWindow($picw, $hScrDC, 0, $pSize, $hMemDC, $pSource, 0, $pBlend, $ULW_ALPHA)
  _WinAPI_ReleaseDC   (0, $hScrDC)
  _WinAPI_SelectObject($hMemDC, $hOld)
  _WinAPI_DeleteObject($hBitmap)
  _WinAPI_DeleteDC    ($hMemDC)
EndFunc