Windows 3.11 Drawing Tool: Microsoft Paintbrush

Microsoft Windows 3.11 included a built-in graphic design accessory called Paintbrush, which allowed users to create, modify, and view basic digital illustrations. Originally introduced in earlier iterations of the Windows operating system and carried through Windows for Workgroups 3.11, Paintbrush served as the primary entry-level creative suite for desktop users. This article explains the history, features, and legacy of Paintbrush in the 16-bit Windows computing era.

The Identity of Paintbrush

In Windows 3.11, the built-in accessory used for drawing simple illustrations was Paintbrush (executable file name pbrush.exe). Licensed from ZSoft Corporation, the creator of the popular MS-DOS program PC Paintbrush, the utility was located by default within the "Accessories" program group in Program Manager. Paintbrush was designed to be an accessible, mouse-driven tool for users of all skill levels to generate basic pixel art, sketches, and simple diagrams.

Core Features and Tools

Paintbrush featured a straightforward, intuitive interface tailored to the limitations and capabilities of early 1990s hardware:

  • Drawing Implements: Users had access to a basic toolkit displayed on the left side of the window, including a freehand brush, an airbrush (spray can), a paint roller for flood-filling bounded areas, a line tool, a curve tool, and an eraser.
  • Geometric Shapes: The application provided tools to generate outlined or filled rectangles, rounded rectangles, ellipses, and freeform polygons.
  • Palette Options: A color palette along the bottom of the screen displayed available colors, typically supporting monochrome, 16-color, or 256-color palettes depending on the user's graphics card configuration.
  • Text Insertion: Users could type text directly onto the canvas using installed TrueType fonts, selecting font styles such as bold, italic, and underline.
  • Zoom Mode: A primitive "Zoom In" feature allowed users to edit individual pixels directly, which was essential for fine-tuning low-resolution artwork.

File Format Support

Unlike modern graphics software that utilizes compressed formats such as PNG or JPEG, Paintbrush relied primarily on two formats:

  1. BMP (Bitmap): The native Windows bitmap format, supporting monochrome, 16-color, and 24-bit color depth images.
  2. PCX: The proprietary ZSoft PC Paintbrush format, which was widely used across MS-DOS graphics applications at the time.

Paintbrush could also copy graphics to the Windows Clipboard, enabling users to easily paste drawings into other Windows 3.11 applications, such as Microsoft Write or Cardfile.

Legacy and Transition to Paint

Paintbrush remained a fundamental part of the standard Windows installation until the release of Windows 95. With the transition to 32-bit architecture, Microsoft replaced Paintbrush with a redesigned, native 32-bit app simply named Paint (mspaint.exe). While newer editions of Windows have continuously updated Paint with modern features like vector shapes, ribbon interfaces, and 3D capabilities, Paintbrush in Windows 3.11 established the fundamental layout and toolset that define Windows drawing software to this day.