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D Cookbook

You're reading from   D Cookbook Discover the advantages of programming in D with over 100 incredibly effective recipes with this book and ebook.

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Product type Paperback
Published in May 2014
Publisher
ISBN-13 9781783287215
Length 362 pages
Edition Edition
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Author (1):
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Adam Ruppe Adam Ruppe
Author Profile Icon Adam Ruppe
Adam Ruppe
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Table of Contents (21) Chapters Close

D Cookbook
Credits
Foreword
About the Author
About the Reviewers
www.PacktPub.com
Preface
Core Tasks FREE CHAPTER Phobos – The Standard Library Ranges Integration Resource Management Wrapped Types Correctness Checking Reflection Code Generation Multitasking D for Kernel Coding Web and GUI Programming Addendum Index

Creating a graphics window to show a TV static demo


My simpledisplay.d file is a module to create and interact with a simple window, enabling easy graphics display. On Windows, it wraps the Win32 GDI API, and on other systems it uses Xlib for broad compatibility with minimal dependencies.

Getting ready

Download simpledisplay.d and its dependency color.d from my Github.

How to do it…

Let's execute the following steps to create a graphics window:

  1. Import simpledisplay.

  2. Create an image to use as your pixel drawing buffer.

  3. Create a SimpleWindow object with the image's size.

  4. Create an image to use as your buffer.

  5. Create and run an event loop with window.eventLoop.

  6. Pass 25 as the first argument to eventLoop to request a 25 millisecond timer.

  7. Pass a delegate that takes no arguments to serve as the timer handler. In this function, fill the image with random white and black pixels, get a painter with window.draw, and draw the image to it with painter.drawImage.

  8. Pass a delegate that takes a KeyEvent argument to...

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