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      GameDev.net and CRC Press have teamed up to bring a free ebook of content curated from top titles published by CRC Press. The freebook, Practices of Game Design & Indie Game Marketing, includes chapters from The Art of Game Design: A Book of Lenses, A Practical Guide to Indie Game Marketing, and An Architectural Approach to Level Design. The GameDev.net FreeBook is relevant to game designers, developers, and those interested in learning more about the challenges in game development. We know game development can be a tough discipline and business, so we picked several chapters from CRC Press titles that we thought would be of interest to you, the GameDev.net audience, in your journey to design, develop, and market your next game. The free ebook is available through CRC Press by clicking here. The Curated Books The Art of Game Design: A Book of Lenses, Second Edition, by Jesse Schell Presents 100+ sets of questions, or different lenses, for viewing a game’s design, encompassing diverse fields such as psychology, architecture, music, film, software engineering, theme park design, mathematics, anthropology, and more. Written by one of the world's top game designers, this book describes the deepest and most fundamental principles of game design, demonstrating how tactics used in board, card, and athletic games also work in video games. It provides practical instruction on creating world-class games that will be played again and again. View it here. A Practical Guide to Indie Game Marketing, by Joel Dreskin Marketing is an essential but too frequently overlooked or minimized component of the release plan for indie games. A Practical Guide to Indie Game Marketing provides you with the tools needed to build visibility and sell your indie games. With special focus on those developers with small budgets and limited staff and resources, this book is packed with tangible recommendations and techniques that you can put to use immediately. As a seasoned professional of the indie game arena, author Joel Dreskin gives you insight into practical, real-world experiences of marketing numerous successful games and also provides stories of the failures. View it here. An Architectural Approach to Level Design This is one of the first books to integrate architectural and spatial design theory with the field of level design. The book presents architectural techniques and theories for level designers to use in their own work. It connects architecture and level design in different ways that address the practical elements of how designers construct space and the experiential elements of how and why humans interact with this space. Throughout the text, readers learn skills for spatial layout, evoking emotion through gamespaces, and creating better levels through architectural theory. View it here. Learn more and download the ebook by clicking here. Did you know? GameDev.net and CRC Press also recently teamed up to bring GDNet+ Members up to a 20% discount on all CRC Press books. Learn more about this and other benefits here.
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Icebraker

qt docking window

2 posts in this topic

Hello, I'm currently writing a qt application with docking windows. Basically, I want to modify my state variables from the docking window. I have already created the window, but when I close my application I get a segFault because I haven't connected it to any closing signal, and it is currently also disconnected to the parent window. Has anybody any experience with docking windows and can paste some code for either - how to connect the docking window to the parent so it gets automatically closed when the parent is closed - how to correctly close the docking window once the main window gets closed Thanks, Icebraker
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I don't have time to paste code for you right now, but I can try to assist. First, Sigma's suggestion of trying the sample apps is a very good one. Qt has great sample apps. Just do a grep for QDockWidget (or QDockWindow if you're using Qt3) in the examples folder.

Moving on, you shouldn't segfault for not connecting a signal. Furthermore, the docking window should go away automatically when the parent is closed. That's part of Qt's hierarchy.

What I'm guessing may be your issue is being unaware of Qt's memory management. Qt main windows don't automatically clean up, so general suggestion is to put them on the stack. However, all other Qt widgets that are parented do clean up, so generally put them on the heap and Qt will do the cleanup behind the scenes. Your issue may be more related to something of that flavor. I know it threw me off at first that Qt was actually automatically cleaning up and deallocating the other widgets that were no longer used.

Finally, one other tip that QDockWidgets only work properly, in my experience, when the parent is a QMainWindow (or derivative). This is another thing that threw me off at first.

Let me know if that helps. If not, clarify what issues you're having and I'll see what else I can advise.
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