MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Guia do Utilizador descarregar pdf (Página 86)

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3 How to Create a Simple GUI Programmatically

set(f,'Name','Simple GUI')

% Move the GUI to the center of the sc reen .

movegui(f,'center')

% Make the GUI visible.

set(f,'Visible','on');

% Callbacks for simple_gui2. These callbacks automati cally

% have access to component han dles and initialized data

% because they are nested at a lower level.

% Pop-up menu callback. Read t he pop-up menu Valu e property

% to determine which item is c urrently displayed and make it

% the current data.

function popu p_m enu_Callback(source,even tdata)

% Determine the selected dat a set.

str = get(source, 'String');

val = get(source,'Value');

% Set current data to the selected data set .

switch str{va l};

case 'Peaks' % User selects Peaks.

current_data = peaks_data;

case 'Membran e' % User selects Membrane.

current_data = membrane_data;

case 'Sinc' % User selects S inc.

current_data = sinc_data;

end

% Push button callbacks. Ea ch callback plots c urrent_data in

% the specified plot type.

function sur fbut ton_Callback(source,eve ntdata)

% Display surf plot of the currently selec ted data.

surf(current_data);

end

function mes hbut ton_Callback(source,eve ntdata)

% Display mesh plot of the currently selec ted data.

mesh(current_data);

end

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