MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Guide de l'utilisateur télécharger pdf (Page 724)

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15 Examples of GUIs Created Programmatically

Pass Output to a Caller on Returning

If a host GUI calls the colorPalette function with an output argument, i t

returns a function handle that the host GUI can call to get the currently

selected color.

The host GUI calls

colorPalette only once. The call creates the color palette

in the specified parent and then returns the function handle. The host GUI

can call the returned function at any time before the color p alette is destroyed.

The data definition se ction of the

colorPalette code file creates a cell array

to hold the output:

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

Just before returning, colorPalette assigns the function handle,

mgetSelectedColor, to the cell array mOutputArgs and then assigns

mOutputArgs to varargout to return the arguments.

mOutputArgs{} = @getSelectedColor;

if nargout>0

[varargout{1:nargout}] = mOutputAr gs{:};

end

Share Data Between Two GUIs

The Icon Editor example G UI, described next, embeds the colorPalette GUI to

enable the user to sele ct colors for the ico n cells. T he colorPalette returns a

function handle to the iconEditor. The iconEditor can then call the returned

function at any time to get the selected color. The following two sections

describe how the two GUIs work together.

The colorPalette GUI. The

colorPalette function defines a cell array,

mOutputArgs, to hold its output arguments.

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

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Guide de l'utilisateur Page 724

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