MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Manual do Utilizador descarregar pdf (Página 295)

GUI with Axes, Menu, and Toolbar

12-17

• The uipushtool TooltipString property assigns a tool tip that displays when

the GUI user moves the mouse pointer over the button and leaves it there.

• The

CData property specifies a truecolor image that displays on the button.

For these two buttons, the utility

iconRead function supplies the image. If

you are reading this in the MATLAB Help browser, click here to display this

utility M-file in the MATLAB Editor.

• For each of the uipushtools, the

ClickedCallback property specifies the

callback that executes when the GUI user clicks the button. Note that the

Open push button and the Print push button use the same callbacks as

their counterpart menu items.

See the Uitoolbar Properties reference page for information about properties of

uitoolbar objects and their default values. See the Uipushtool Properties

reference page for information about properties of

uipushtool objects.

Initializing the GUI

These statements create the plot that appears in the GUI when it first displays,

and define the output that is returned to the user if the user provides an output

argument when running the GUI.

% Update the plot with the initial plot type

localUpdatePlot();

% Define default output and return it if it is requested by users

mOutputArgs{1} = hMainFigure;

if nargout>0

[varargout{1:nargout}] = mOutputArgs{:};

end

• The localUpdatePlot function plots the selected plot type in the axes. For a

pop-up menu, the uicontrol

Value property specifies the index of the selected

menu item in the

String property. Since the default value is 1, the initial

selection is

'plot(rand(5))'. The localUpdatePlot function is a helper

function that is defined later in the script, at the same level as the callbacks.

• The default output is the handle of the main figure.

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Manual do Utilizador Página 295