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Why Use GTK+?

An anonymous reader writes "IBM DeveloperWorks is running an interesting student article that introduces users to the world of GTK+. It explains what GTK+ is, why you should consider using it, and the benefits it provides. Together with the rest of the series, this installment provides enough introductory information that, if you decide to use GTK+ in your own projects, you'll know where to look for further materials."

21 of 356 comments (clear)

  1. Nokia by ultrabot · · Score: 5, Informative

    One interesting consideration when determining what toolkit to go with is that the GUI toolkit for Nokia's new internet tablet is GTK+.

    --
    Save your wrists today - switch to Dvorak
    1. Re:Nokia by Anonymous Coward · · Score: 4, Informative

      It's actually a modified version of GTK+, with some components removed (those that they felt weren't needed given the constraints of the device) and some new stuff added in (mainly the "Hildon" libraries) for creating new applications that can take advantage of the device-specific widgets and layout.

  2. What is GTA? by earthstar · · Score: 3, Informative
    For those who didnt RTA,

    GTK+ is a graphical user interface (GUI) tool kit.
    That is, it's a library (or, in fact, a collection of several closely related libraries) that allow you to create GUI-based applications. Think of GTK+ as a toolbox in which you can find many ready building blocks for creating GUIs.

    Originally, GTK+ was created as a spin-off of another well-known open source project: the GNU Image Manipulation Program (GIMP). While working on early GIMP versions, Peter Mattis and Spencer Kimball created GTK (which stands for GIMP Toolkit) as an alternative to the Motif tool kit, which at that time was not free. (The plus sign was added to the name later, when the tool kit gained object-oriented features and extensibility.)

    That was almost 10 years ago. Today, a lot of activity is still going on with the latest GTK+ version -- 2.8 -- and while GIMP certainly continues to be one of the best-known programs using GTK+, it is by far not the only one. Literally thousands of applications have been written for GTK+, and at least two major desktop environments (Xfce and GNOME) use GTK+ to provide a full working environment for users.
  3. Interestingly... by Lendrick · · Score: 4, Informative
    These all apply to Qt as well. To each their own. :)

    • It's both modern and actively developed and maintained, with a vibrant surrounding community.
    • It offers a wide array of options for extending your work to as many people as possible, including a sophisticated framework for internationalization, localization, and accessibility.
    • It's simple and easy to use, both for developers and users.
    • It's well designed, flexible, and extensible.
    • It's free software with a liberal open source license.
    • It's portable, both from the user's and the developer's perspective.

    1. Re:Interestingly... by Anonymous Coward · · Score: 3, Informative

      QT/X11 is indeed free software, but what about QT/w32 ?
      Also, you are allowed to use GTK+ for proprietary projects (LGPL). The free QT is GPL.

    2. Re:Interestingly... by adolfojp · · Score: 4, Informative
      It's free software with a liberal open source license.
      Eh... not quite, unless you plan to make open source software exclusively. http://www.trolltech.com/products/qt/licensing.htm l
      The same thing applies to MySQL but people seem to mistake the GPL for the LGPL.
    3. Re:Interestingly... by adolfojp · · Score: 5, Informative
      ... I dislike disingenuous articles like the present developerworks article which pretends that GTK+ is the only toolkit that exists.

      From the article:
      In actuality, modern GUI tool kits do more than merely avoid duplication. They offer many advanced capabilities that users have come to expect in their applications and which wouldn't be attainable otherwise because the time and work investment in such tool kits exceeds whatever you could spend on a single application. Therefore, if using a GUI in your application is important to you, use a tool kit. There's simply no other way. Now, the only question left is, which tool kit should you use?
      The author makes it very clear to the reader that other GUI toolkits exist. Since he likes GTK+ he writes an article advocating it. It is not meant as a comparison between different toolkits. It is meant as an introduction to one of them.
      Also, considering the wealth of GUI toolkits avaliable, his article would loose focus quickly if he meant to mention all of them.
    4. Re:Interestingly... by hughk · · Score: 3, Informative
      If you visit their website, you will find that MySQL are quite up front about their dual licensing policy.

      If you want to use it from something like Perl/PHP whatever, you will find the license cost is zero. If you want to incorporate it as part of an in-house system, there is no issue. It is only if you want to build non-GPL software for distribution. OTOH, you will find that many commercial users have no issues with paying for support. Although not as full featured as Oracle 10g, it costs a tad less.

      --
      See my journal, I write things there
    5. Re:Interestingly... by cortana · · Score: 5, Informative

      The MySQL client libraries are under the GPL, not the LGPL.

      MySQL even claim that if you implement your own client, it speaks the MySQL protocol, and as such is a derivative work of the MySQL server and so must be made available under the GPL.

  4. Re:With the bazillion GUI toolkits out there.. by undeadly · · Score: 5, Informative
    Are there any cross platform (linux, mac, windows) GUI RAD tools ala Builder, yet?

    You have QT Designer that is part of the QT Toolkit.

  5. Re:With the bazillion GUI toolkits out there.. by adolfojp · · Score: 3, Informative
    Are there any cross platform (linux, mac, windows) GUI RAD tools ala Builder, yet?
    I like to use this one: http://glade.gnome.org/ Its windows port works fine but I haven't tried the Mac version yet.
    These guys love to use it but it is more of a political issue than a technological one.

    And now, If you'll excuse me, I've got some work to finish on Photoshop vi. :-P
  6. Re:Just curious by strider44 · · Score: 4, Informative

    Yes Gimp still uses the Gimp Tool Kit.

  7. Re:GTK is alright...but no raves by Theatetus · · Score: 3, Informative

    Then again, actually GTK has what you want anyways, despite my earlier response rant:

    mywidget = gtk_dialog_new_with_buttons("Quit without saving?", GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT, "Save", GTK_RESPONSE_OK, "Don't Save", GTK_RESPONSE_CANCEL);
    --
    All's true that is mistrusted
  8. Cross-platform GUI RAD (for GTK+, etc): wxDesigner by Chuck+Messenger · · Score: 5, Informative


    Are there any cross platform (linux, mac, windows) GUI RAD tools ala Builder, yet?


    Yes -- wxDesigner is a very nice RAD for use with the wxWidgets GUI-building environment. wxWidgets is a cross-platform GUI framework which uses native widgets. On Linux, it uses GTK+. On Windows, it uses Windows widgets. On Mac, it uses Mac widgets. There are other somewhat-supported platforms. This approach contrasts with that of the Qt framework -- another cross-platform builder (which is excellent), which implements all its own widgets on each platform. Also unlike Qt, wxWidgets is not bound by the GPL -- you're pretty much free to do as you like with it (i.e. incorporating it into commercial apps, without the requirement that you release your source code, or pay any licensing fee). wxDesigner is a very nice GUI RAD builder for wxWidgets. It's not free, but it's cheap. You definitely get your money's worth.

  9. Re:Tempting.... by jcupitt65 · · Score: 5, Informative
    The official docs are OK, I think. There's a tutorial too. There's also an excellent book: The Official GNOME2 Developers Guide, but sadly it's not available as a free download.

    People do rave about the Qt docs I know.

  10. Re:Tempting.... by harves · · Score: 3, Informative

    Sorry, but what's wrong with http://developer.gnome.org/doc/API/2.0/gtk/, with every supporting library also document at http://developer.gnome.org/doc/API/?

    Though when things get really tough and I absolutely have to know the little details, I like to hit the source http://cvs.gnome.org/viewcvs/gtk%2B/gtk/ instead.

  11. wxWidgets? by El_Muerte_TDS · · Score: 3, Informative

    Why not wxWidgets? It's more flexible if you ask me. It simply wraps the native GUI stuff, or an other toolkit like GTK+.
    I don't have any numbers, but I think the performance would be better and the distribution size shouldn't suffer much (as with Qt or GTK+).

  12. Yes but... by wwahammy · · Score: 4, Informative

    IBM seems to skip over one of the biggest reasons to NOT use GTK+ - it just doesn't look right on Windows. I'm not sure who said it but a commentator suggested a while ago that one of the reasons open-source programs weren't overtaking closed source was due to a lack of polish (which does of course cover more than just appearance); he used GAIM vs. MSN Messenger as an example. The jarring difference between controls in GTK+ or Java or even Mozilla to some extent vs Win32 is important when you're creating an application for normal end users. In my opinion, that difference can look unprofessional. I would figure that the issue of appearance could be mitigated but it hasn't yet so I don't know for sure.

    A question for someone who knows more about GUI toolkits: What are the issues involved in matching the appearance between toolkit controls and the native controls?

  13. Re:Distribution on Windows by Richard+W.M.+Jones · · Score: 4, Informative

    if it depends on 6-8 MB for GTK

    Our cross-platform "hello world" program including Gtk is about 300K compressed in total on Windows.

    Rich.

  14. Re:Distribution on Windows by Theatetus · · Score: 4, Informative
    I don't know about vbrun but the MFC DLL is less than a meg in size.

    And MFC.DLL is the equivalent of maybe half of glib and the stubs for the rest of the libs. Count all your non-Office OCX files; those are delivering the rest of the equivalent capability

    --
    All's true that is mistrusted
  15. Why I chose GTK+ by ChaoticCoyote · · Score: 3, Informative

    I haven't read the article, since GTK+ is already my preferred GUI toolkit. And this in spite of the fact that I run KDE as my primary desktop! I run both Gnome and KDE, and my choice of KDE over Gnome is based more on organization and flexibility than it is on the underlying GUI toolkit.

    As background: My wrote my first GUI programs back in the days of Window 3.1, and while most of my work is on data-crunching engines, I do write quite a few GUI applications. I need to rapidly generate an interface, back it with code, and have it presentable on Windows and Linux.

    As a programmer, I don't like QT. It feels klunky, bloated; nor do I find QT Designer all that friendly. Beyond matters of taste and comfort, TrollTech requires a commercial license for certain tools (e.g., a MathML widget) that I can obtain under GPL for GTK+.

    I'm rather fond of Glade. Most of my GTK+ GUI programs are in C, some in C++; I define an interface in Glade, fill in the appropriate functions, and I'm ready to rock and roll.

    GTK+ 2.8 brought with it Cairo, a very nice drawing toolkit. I just put together a little interactive graphics application, just to better familiarize myself with Cairo, and the result is quite nice.

    In the near future, I'll be writing some very extensive OpenGL applications, and I'll likely wrap these in a GTK+ GUI. If something better comes along, I'll try it -- but for now, GTK+ provides what I need. Your mileage may vary.