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How to Change Code::Blocks to Dark Mode?

Published in IDE Customization 4 mins read

Transforming Code::Blocks into a dark mode environment involves customizing its editor appearance to reduce eye strain and enhance focus. While Code::Blocks doesn't feature a single "dark mode" toggle for its entire interface, you can easily set up a dark theme for the code editor itself, which is where most of your interaction occurs.

Achieving a Dark Editor Theme in Code::Blocks

The core of changing Code::Blocks to a dark mode lies within its extensive editor configuration options. You can choose from predefined dark color themes or meticulously customize every element to your liking.

Step-by-Step Guide to Darken Your Editor

Follow these steps to give your Code::Blocks editor a sleek, dark appearance:

  1. Access Settings: From the main menu bar at the top, navigate to Settings.
  2. Open Editor Settings: In the Settings dropdown menu, select Editor.... This action will open the comprehensive Configure editor dialog box.
  3. Navigate to Syntax Highlighting: In the left-hand pane of the Configure editor dialog, click on Syntax highlighting. This section allows you to define the colors for different code elements.
  4. Select a Dark Color Theme:
    • Look for the Colour theme: dropdown menu.
    • Code::Blocks offers several built-in themes. Explore options like Solarized Dark, Monokai, Obsidian, or Dracula if available. These are popular choices for dark coding environments.
    • Tip: After selecting a theme, observe the preview window to see how it looks.
  5. Customize Default Style (Optional but Recommended):
    • Even if you choose a theme, it's good practice to ensure the default background is dark.
    • Under the Default style section (usually at the top of the Syntax highlighting settings), click the Background colour box. Choose a dark gray or black color.
    • For the Foreground colour (default text color), select a light color like white or light gray for contrast.
  6. Apply Changes: Click the OK button at the bottom of the dialog box to save and apply your new editor theme.

Manual Customization for Specific Elements

If the predefined themes don't quite match your preferences, Code::Blocks allows for granular control over individual syntax elements. Within the Syntax highlighting section, you can select specific items from the Style list and adjust their foreground and background colors:

  • Keywords: Adjust Keywords (e.g., int, void) and Keywords 2 (e.g., class, public).
  • Comments: Customize Comments, Comment line, and Comment doc colors.
  • Strings and Characters: Modify String and Character colors.
  • Numbers and Operators: Set distinct colors for Number and Operator symbols.
  • Selection: Change Selection background and Selection foreground to ensure selected text remains readable.

Enhancing Readability: Fonts and Margins

Beyond colors, font choices and margin settings significantly contribute to a comfortable dark mode experience.

Adjusting Font Settings

In the Configure editor dialog, navigate to the General settings or Margins and caret section in the left pane. Here you can:

  • Font: Click the Choose... button next to "Font" to select a coding-friendly font. Popular choices include:
    • Fira Code: Known for its programming ligatures.
    • Consolas: A classic monospace font from Microsoft.
    • Source Code Pro: An open-source font designed for code.
    • Ubuntu Mono: A clean and readable option.
  • Size: Adjust the font size to your preference for optimal readability.

Margins and Caret

Still within Margins and caret, you can fine-tune visual cues:

  • Caret colour: Change the color of the blinking text cursor (caret) to make it stand out against a dark background.
  • Line highlighting colour: Configure the color for the currently active line to improve navigation.

UI Theme (Beyond the Editor)

It's important to note that the entire Code::Blocks application interface (menus, toolbars, project manager pane) does not have a built-in dark mode switcher. Its appearance typically follows your operating system's theme settings.

  • Windows: Enable Dark Mode through your Windows Personalization settings.
  • macOS: Activate Dark Mode in System Settings (or System Preferences).
  • Linux: Apply a dark GTK or Qt theme through your desktop environment's appearance settings.

Popular Dark Editor Themes for Code::Blocks

Here's a quick overview of some commonly used dark themes that you can either find built-in or replicate through manual customization:

Theme Name Description Best For
Monokai Distinctive dark background with vibrant keyword colors. Web development, Python, general programming
Solarized Dark Muted, warm, and carefully selected color palette. Reduced eye strain, long coding sessions
Dracula A modern dark theme with vivid accent colors. Contemporary aesthetic, various languages
Obsidian Deep dark background with sharp, contrasting colors. C++, Java, professional environments

For more themes and customization options, you can sometimes find user-contributed theme files (.conf files) on forums or communities dedicated to Code::Blocks. These can often be imported, though the exact method can vary.

By following these steps, you can effectively transform your Code::Blocks editor into a comfortable and visually appealing dark mode environment, enhancing your coding experience. For more information, you can always refer to the official Code::Blocks website.