MATLAB Creating Graphical User Interfaces

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Use the Icon Editor


The Icon Editor dialog includes the following components:



  • Icon file name — The icon image file to be loaded for editing

  • Import button — Opens a file dialog to select an existing icon file for editing

  • Drawing tools — A group of four tools on the left side for editing icons

    • Pencil tool — Color icon pixels by clicking or dragging

    • Eraser tool — Erase pixels to be transparent by clicking or dragging

    • Paint bucket tool — Flood regions of same-color pixels with the current color

    • Pick color tool — Click a pixel or color palette swatch to define the current color



  • Icon Edit pane — A n-by-m grid where you color an icon

  • Preview pane — A button with a preview of current state of the icon

  • Color Palette — Swatches of color that the pencil and paint tools can use

  • More Colors button — Opens the Colors dialog box for choosing and defining colors

  • OK button — Dismisses the dialog and returns the icon in its current state

  • Cancel button — Closes the dialog without returning the icon


To work with the Icon Editor,


(^1) Open the Icon Editor for a selected tool’s icon.
(^2) Using the Pencil tool, color the squares in the grid:



  • Click a color cell in the palette.

  • That color appears in the Color Palette preview swatch.

  • Click in specific squares of the grid to transfer the selected color to those squares.

  • Hold down the left mouse button and drag the mouse over the grid to transfer the
    selected color to the squares that you touch.

  • Change a color by writing over it with another color.


(^3) Using the Eraser tool, erase the color in some squares



  • Click the Eraser button on the palette.

  • Click in specific squares to erase those squares.

  • Click and drag the mouse to erase the squares that you touch.


Create Toolbars for GUIDE UIs
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