I tried with a2dAggDrawer. It does not worked for me. A2dAggDrawerRGBA and wxImage without a2dImageRGBA does not worked also.
a2dCanvasDocumentIOHandlerImageOut sounds good, I will look at it. But this time it was enough to get a wxImage. The file, I needed it only for testing. > Just curious, did not know this could be done :-) You can expand your samples :-) Süleyman > -----Ursprüngliche Nachricht----- > Von: klaas.holwerda [mailto:n...@klaasholwerda.nl] > Gesendet: Mittwoch, 21. Dezember 2011 19:06 > An: wxart2d-users_dev@lists.sourceforge.net > Betreff: Re: [Wxart2d-users_dev] wxBitmap with Alpha-Channel from my > Canvas > > a2dCanvasDocumentIOHandlerImageOut is for writing a document to a file as > image (look in samples for > usage). > Using any a2dDrawer is possible. > It does not limit the resolution to only the window size pixels. > > But it seems you already solved it. > > Wonder if a2dAggDrawer could have solved it too? > > Are is a2dImageRGBA saving you this time? > > Just curious, did not know this could be done :-) > > Klaas > > > On 21-12-2011 17:20, Süleyman Demir wrote: > > Hi Klaas, > > > >> Do you want to place a transparent bitmap on the canvas? > >> Or do you want to see the desktop or something what is behind your > >> application? > >> Like a sort of overlay. > > neither of the two. > > > > Need a wxImage or a wxBitmap of my canvas and would like to save it in a > > file. Now when I open the file in a viewer the background should > > transparent, so that I can see only the objects. > > > > a2dAggDrawerRgba and a2dImageRGBA have done the work. > > > > a2dCanvas m_canvas; > > a2dAggDrawerRgba m_drawer2d; > > m_canvas->SetBackgroundFill (a2dFill (wxColour (255, 255, 255, 0), > > a2dFILL_SOLID)); . > > . > > . > > a2dImageRGBA img_rgba = m_drawer2d->GetImageBuffer (); wxImage img = > > img_rgba.GetImage ().Mirror (false); img.SaveFile ("_hihihi.png", > > wxBITMAP_TYPE_PNG); > > > > A png-File with a transparent Background ;-) > > > > Thank you for your help! > > > > Süleyman > > > >> -----Ursprüngliche Nachricht----- > >> Von: klaas.holwerda [mailto:n...@klaasholwerda.nl] > >> Gesendet: Mittwoch, 21. Dezember 2011 14:29 > >> An: wxart2d-users_dev@lists.sourceforge.net > >> Betreff: Re: [Wxart2d-users_dev] wxBitmap with Alpha-Channel from my > >> Canvas > >> > >> Sorry i don't understand the question. > >> > >> Do you want to place a transparent bitmap on the canvas? > >> Or do you want to see the desktop or something what is behind your > >> application? > >> Like a sort of overlay. > >> > >> At least a2dAggDrawerRgba has an alpha channel. > >> But never tried it. > >> In principle a a2dCanvas is a wxWindow, so if you can do such a thing > with > >> a wxWindow, it can be > >> done here. > >> > >> But maybe you prefer without a double buffer approach, and instead just > >> draw objects. > >> Like a2dDcDrawer is used to draw on a printer without bitmap in > between. > >> > >> But again it not clear to me what you want. > >> > >> Klaas > >> > >> On 21-12-2011 9:15, Süleyman Demir wrote: > >>> Hi there, need a wxBitmap with an alpha channel from my canvas. > >>> I want to set the background transparent so that i can only see the > >> objects > >>> in the bitmap. > >>> > >>> is that possible? > >>> > >>> > >> > > > -------------------------------------------------------------------------- > ---- > Write once. Port to many. > Get the SDK and tools to simplify cross-platform app development. Create > new or port existing apps to sell to consumers worldwide. Explore the > Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join > http://p.sf.net/sfu/intel-appdev > _______________________________________________ > Wxart2d-users_dev mailing list > Wxart2d-users_dev@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wxart2d-users_dev ------------------------------------------------------------------------------ Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev _______________________________________________ Wxart2d-users_dev mailing list Wxart2d-users_dev@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wxart2d-users_dev
