Il 31/12/2014 15:30, Tobias Boege ha scritto: > On Wed, 31 Dec 2014, Gian wrote: >> Il 31/12/2014 01:25, Tobias Boege ha scritto: >>> Hi, >>> >>> I'm trying to have FMain automatically adjust its size according to its sole >>> (for demonstration) child control PictureBox1. The PictureBox1 itself is >>> AutoResize = True and gets a big Picture. (Attached is a little project.) >>> >>> What happens is that PictureBox1 resizes accordingly, so I thought I set >>> FMain.AutoResize = True but FMain does not react to the growing PictureBox1. >>> The interplay between AutoResize, Expand, the parent's Arrangement and a >>> PictureBox' Stretch has always been obscure to me. Does anyone have a >>> solution? >>> >>> Regards, >>> Tobi >>> >>> >>> >>> ------------------------------------------------------------------------------ >>> Dive into the World of Parallel Programming! The Go Parallel Website, >>> sponsored by Intel and developed in partnership with Slashdot Media, is your >>> hub for all things parallel software development, from weekly thought >>> leadership blogs to news, videos, case studies, tutorials and more. Take a >>> look and join the conversation now. http://goparallel.sourceforge.net >>> >>> >>> >>> _______________________________________________ >>> Gambas-user mailing list >>> Gambas-user@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/gambas-user >>> >> >> Tobia, >> I'm embarrassed to answer, you are a guru and surely you know this: >> Picture PictureBox1.Picture = ["icon: / 96 / access"] >> Me.H = PictureBox1.H >> Me.W = PictureBox1.W >> because it does not satisfy you? > > You're right, this solves the (accidentally over-)simplified scenario I > described. What I havent't told you is that my actual application will have > some levels of layout containers (Panel, HBox, VBox) and then a PictureBox. > Of course there will be other controls and containers next to this hierarchy > and thus using W and H to calculate the correct dimensions will be tedious. > > Meanwhile I had a look at the sources and it turns out I need to make gb.qt4 > call a thing called arrange_now(). I can achieve that by the sequence > > myContainer.AutoResize = False > myContainer.AutoResize = True > > and indeed if the PictureBox' immediate parent is a Panel or Form and has > Arrangement = Horizontal when executing this sequence, the container will > grow in width together with the picture, and so forth up the container > hierarchy. > > My next problem was to have the parents not only grow in width but in width > and height. This happens when arrange_now() is called once with Arrangement > = Horizontal and once with Arrangement = Vertical. The change of Arrangement > also triggers a call to arrange_now(), so I just have to do > > myContainer.Arrangement = Arrange.Vertical > myContainer.Arrangement = Arrange.Horizontal > > in addition to AutoResize being True, to force a re-layout (for Panel and > Form containers). The only problem is other controls which are unwantedly > resized during the Arrangement change but I can deal with it by setting > those controls' Ignore = True temporarily. Not pretty but it works, as you > can see in the attached project. > > Now it's up to Benoit to decide if this is worth adding another method, like > Container.Rearrange(). It would call arrange_now() and somehow have > AutoResize containers re-calculate their dimensions (preferably recursive). > (Or to wire this stuff into Container.Refresh()). I'm not particularly happy > with my hack but I don't care enough to insist that there be a new method > for this scenario. But to rephrase my initial question: what is AutoResize > supposed to do (or *when*) if it cannot automatically resize a container > when children resize? (I noticed that the automatic resizing is done > perfectly in both directions and automatically if I put the large picture > into the PictureBox before the form is shown at all...) > > Regards, > Tobi > > > > ------------------------------------------------------------------------------ > Dive into the World of Parallel Programming! The Go Parallel Website, > sponsored by Intel and developed in partnership with Slashdot Media, is your > hub for all things parallel software development, from weekly thought > leadership blogs to news, videos, case studies, tutorials and more. Take a > look and join the conversation now. http://goparallel.sourceforge.net > > > > _______________________________________________ > Gambas-user mailing list > Gambas-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/gambas-user >
Hello Tobias, I was sure that answering to you I would have done a good business :) happy new year Gianluigi ------------------------------------------------------------------------------ Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net _______________________________________________ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user
