MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Manuel d'utilisateur télécharger pdf (Page 308)

12 Examples of GUIs Created Programmatically

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2 If it finds a match, processUserInputs assigns the value that was input for

the property to its variable in the third column of the

mPropertyDefs cell

array.

3 processUserInputs then calls the helper function specified in the second

column of the

mPropertyDefs cell array to validate the value that was

passed in for the property.

Passing Output to a Caller on Returning

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

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 palette is destroyed.

The data definition section of the

colorPalette M-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}] = mOutputArgs{:};

end

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 a function handle the

iconEditor. The iconEditor can then call the returned function at any time to

get the selected color.

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 Manuel d'utilisateur Page 308