Jump to content
fatpig

Images exhibit black artifacts

Recommended Posts

fatpig

can anyone tell me how I stop this from occuring when I place a jpg in my GUI?
White parts become black. might be transparent, too. Not sure.

thanks :)

autoit-blacknwhite.png

Share this post


Link to post
Share on other sites
Jos
23 minutes ago, fatpig said:

White parts become black. might be transparent, too. Not sure.

Maybe you could have checked before posting to help us help you? ;)
Have you tried settimg the background to white?
Without some script code there isn't much we can help with.

Jos
 


Visit the SciTE4AutoIt3 Download page for the latest versions  - Beta files                                How to post scriptsource        Forum Rules
 
Live for the present,
Dream of the future,
Learn from the past.
  :)

Share this post


Link to post
Share on other sites
fatpig

oh, alright so this is not standard behaviour?

Share this post


Link to post
Share on other sites
Jos
3 minutes ago, fatpig said:

oh, alright so this is not standard behaviour?

So you seriously think we create a function to display a JPG in a gui and then deliberately  fuck it up by making a part black? :)

Jos

  • Like 1

Visit the SciTE4AutoIt3 Download page for the latest versions  - Beta files                                How to post scriptsource        Forum Rules
 
Live for the present,
Dream of the future,
Learn from the past.
  :)

Share this post


Link to post
Share on other sites
fatpig

haha obviously... Back in school when we programmed in "MetaCard", there was always one color in a jpg assigned to transparency,
so I assumed this might work in the same way.

It seems to be the white parts that are discolored, mirroring the JPG compression there I guess.
I use GuiCtrlCreatePic.

I just tried to change the BkColor and sure enough, its transparent!

Share this post


Link to post
Share on other sites
UEZ

Use GDI+. There are plenty of examples how to display an image in the GUI properly.


Please don't send me any personal message and ask for support! I will not reply!

Selection of finest graphical examples at Codepen.io

The own fart smells best!
Her 'sikim hıyar' diyene bir avuç tuz alıp koşma!
¯\_(ツ)_/¯  ٩(●̮̮̃•̃)۶ ٩(-̮̮̃-̃)۶ૐ

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • corz
      By corz
      We've been able to drag images out of web browsers since forever. Can I drag one into my GUI?
      Or rather, can I drag an image from my web browser onto my GUI and have my app *do* something with that image?
      My fingers bleed from searching. Any ideas much appreciated!
      ;o) Cor
    • passwd
      By passwd
      Hello. I'm trying to make a form with two pictures and one button. But pictures must overlap one another. First picture I'm getting from screenshot of another window, but second picture must be with alfa channel and positioning on that first image.
      Something like that:
      #include <ButtonConstants.au3> #include <GUIConstantsEx.au3> #include <StaticConstants.au3> #include <WindowsConstants.au3> #include <GDIPlus.au3> #include <ScreenCapture.au3> Global Const $AC_SRC_ALPHA = 1 $Form1_1 = GUICreate("Document", 701, 671, -1, -1) GUISetBkColor(0xFFFFFF) $Pic1 = GUICtrlCreatePic("", 8, 8, 409, 657) $Button1 = GUICtrlCreateButton("Take Picture", 424, 8, 161, 33) GUISetState(@SW_SHOW) While 1 $nMsg = GUIGetMsg() Switch $nMsg Case $GUI_EVENT_CLOSE Exit Case $Button1 Generate() EndSwitch WEnd Func Generate() Local $hBMP, $hBitmap, $hGraphic, $WindowToCapture WinActivate("Notepad") $WindowToCapture = ControlGetHandle("Notepad", "", "[CLASS:Edit; INSTANCE:1]") $hBMP = _ScreenCapture_CaptureWnd ( '', $WindowToCapture,4,4,400,470,False) ; Initialize GDI+ library _GDIPlus_Startup() $PicHandle = GUICtrlGetHandle($Pic1) $myGuiHandle = ControlGetHandle("Document", "", $PicHandle) $TransparentButtonTest = GUICreate("", 0, 0, 390, 130, $WS_EX_MDICHILD, $WS_EX_LAYERED, $myGuiHandle) $hImageButton = _GDIPlus_ImageLoadFromFile(@ScriptDir & "\2-f.png") SetBitMap($TransparentButtonTest, $hImageButton, 255) GUISetState() WinActivate("Document") ; Draw bitmap to GUI $hBitmap = _GDIPlus_BitmapCreateFromHBITMAP($hBMP) $hGraphic = _GDIPlus_GraphicsCreateFromHWND(GUICtrlGetHandle($Pic1)) _GDIPlus_GraphicsDrawImage($hGraphic, $hBitmap, 0, 100) ; Clean up resources _GDIPlus_GraphicsDispose($hGraphic) _GDIPlus_BitmapDispose($hBitmap) _WinAPI_DeleteObject($hBMP) ; Shut down GDI+ library _GDIPlus_Shutdown() EndFunc Func SetBitmap($hGUI, $hImage, $iOpacity) Local $hScrDC, $hMemDC, $hBitmap, $hOld, $pSize, $tSize, $pSource, $tSource, $pBlend, $tBlend $hScrDC = _WinAPI_GetDC(0) $hMemDC = _WinAPI_CreateCompatibleDC($hScrDC) $hBitmap = _GDIPlus_BitmapCreateHBITMAPFromBitmap($hImage) $hOld = _WinAPI_SelectObject($hMemDC, $hBitmap) $tSize = DllStructCreate($tagSIZE) $pSize = DllStructGetPtr($tSize) DllStructSetData($tSize, "X", _GDIPlus_ImageGetWidth($hImage)) DllStructSetData($tSize, "Y", _GDIPlus_ImageGetHeight($hImage)) $tSource = DllStructCreate($tagPOINT) $pSource = DllStructGetPtr($tSource) $tBlend = DllStructCreate($tagBLENDFUNCTION) $pBlend = DllStructGetPtr($tBlend) DllStructSetData($tBlend, "Alpha", $iOpacity) DllStructSetData($tBlend, "Format", $AC_SRC_ALPHA) _WinAPI_UpdateLayeredWindow($hGUI, $hScrDC, 0, $pSize, $hMemDC, $pSource, 0, $pBlend, $ULW_ALPHA) _WinAPI_ReleaseDC(0, $hScrDC) _WinAPI_SelectObject($hMemDC, $hOld) _WinAPI_DeleteObject($hBitmap) _WinAPI_DeleteDC($hMemDC) EndFunc ;==>SetBitmap But the most interesting, that I need to move second picture(png FromFile) by draging it with mouse ontop of first image.
      Can you tell me what I have done wrong and maybe there is some easier ways to do this?
    • Michiel
      By Michiel
      I'm trying to use '?do=embed' frameborder='0' data-embedContent>> but none of the examples work. Mostly, I'm just not seeing any pictures, just nothing, a window with some text but no picture. What am I doing wrong? Do these examples work for anybody else?
×

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.