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Glossary » mouse-button binding

mouse-button binding

the association of a button on a mouse with a specific functionality, such as the association of a specific tool with the left mouse button after that tool has been selected in a toolbar. Mice range in the number of buttons they have: 1 to 3 buttons is common. While the left mouse button is typically used to select items and press on-screen buttons, the middle and right buttons are often bound with different behaviors. Common behaviors that buttons are bound to include:

  • extending a selection
  • displaying contextual menus (commands that are specific to the item or area clicked)
  • performing a constrained operation, such as drawing straight lines when the primary button can draw arbitrary lines
  • displaying system commands
  • providing help for the item clicked