MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Guide de l'utilisateur télécharger pdf (Page 742)

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15 Examples of GUIs Created Programmatically

The iconEditor’s loca lEdi tColor helper function calls mGetColorFcn,

the function returned by

colorPalette, to execute the colorPalette’s

getSelectedColor function.

function localE ditC olor

% helper function that chan ges the color of an icon data

% point to that of the currently selected color in

% colorPalet te

if mIsEditingIc on

pt = get(hIconEditAxes,'currentpo int');

x = ceil(pt(1,1));

y = ceil(pt(1,2));

color = mGetColorFcn();

% update color of the selecte d block

mIconCData(y, x,:) = color;

localUpdateIconPlot();

end

Achieve Proper Resize Behavior

The prepareLa yout u tility f un ction sets th e Units properties of all the GUI

components to enable the GUI to resize correctly on m ultiple platforms. Code

in the initialization section of iconEditor calls

prepareLayout w ith the handle

of the main figure.

prepareLayout(hMainFigure);

First, p repareLayout uses findall to retrieve the handles of all o bjects

contained in the figure. The list of retrieved handles includes the

colorPalette,whichisembeddedintheiconEditor, and its children. The

figure’s handle is passed to

findall as the input argument topContainer.

function prepar eLay out(topContainer)

...

allObjects = findall(topContainer);

Then, prepareLayout uses strcmpi to determine if the GUI is resizable.

Depending on the outcome, it sets the

Units properties of all the objects to

either

Normalized or Characters.

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Guide de l'utilisateur Page 742

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