MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Uživatelský manuál stáhnout pdf (Strana 322)

12 Examples of GUIs Created Programmatically

12-44

Character units are defined by characters from the default system font. The

width of a character unit equals the width of the letter

x in the system font. The

height of a character unit is the distance between the baselines of two lines of

text. Note that character units are not square.

Making a GUI Modal

iconEditor is a modal figure. Modal figures remain stacked above all normal

figures and the MATLAB command window. This forces the user to respond

without being able to interact with other windows. iconEditor makes the main

figure modal by setting its

WindowStyle property to modal.

hMainFigure = figure(...

...

'WindowStyle', 'modal',...

See the Figure Properties in the MATLAB documentation for more information

about using the

WindowStyle property.

Sharing Data Between Two GUIs

The iconEditor embeds a GUI, the colorPalette, to enable the user to select

colors for the icon cells. The colorPalette returns the selected color to the

iconEditor via a function handle.

The colorPalette GUI. Like the iconEditor, the colorPalette defines a cell array,

mOutputArgs, to hold its output arguments.

mOutputArgs = {}; % Variable for storing output when GUI returns

Just before returning, colorPalette assigns mOutputArgs the function handle

for its

getSelectedColor helper function and then assigns mOutputArgs to

varargout to return the arguments.

% Return user defined output if it is requested

mOutputArgs{1} =@getSelectedColor;

if nargout>0

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

end

The iconEditor executes the colorPalette’s getSeclectedColor function

whenever it invokes the function that colorPalette returns to it.

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Uživatelský manuál Strana 322