MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Manual do Utilizador descarregar pdf (Página 315)

Icon Editor

12-37

The example also includes the helper functions listed in the following table.

M-File Structure

The iconEditor is programmed using nested functions. Its M-file is organized

in the following sequence:

1 Comments displayed in response to the help command.

2 Data creation. Because the example uses nested functions, defining this

data at the top level makes the data accessible to all functions without

having to pass them as arguments.

hCancelButtonCallback

Executes when the user clicks the

Cancel push button.

hIconFileButtonCallback

Executes when the user clicks the

Icon file push button . It calls

localUpdateIconPlot.

Function Description

localEditColor

Changes the color of an icon data point to the

currently selected color. Call the function

mGetColorFcn returned by the colorPalette

function. It also calls

localUpdateIconPlot.

localUpdateIconPlot

Updates the icon preview. It also updates the axes

when an icon is read from a file.

processUserInputs

Determines if the property in a property/value pair

is supported. It calls

localValidateInput.

localValidateInput

Validates the value in a property/value pair.

prepareLayout

Makes changes needed for look and feel and for

running on multiple platforms.

Function Description

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Manual do Utilizador Página 315