MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Guide de l'utilisateur télécharger pdf (Page 369)

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Making Multiple GUIs Work Together

% Update handles structure

guidata(hObject, handles);

The Icon Editor retrieves the initial color from the Color Palette’s GUI data

via its handles structure:

% in Icon E dito r

function col or = getColor(hObject)

handles = guidata(hObject);

colorPalette = handles.colorPalette;

colorPaletteHandles = guidata(c olorPalette);

color = colorPaletteHandles.mSe lectedColor;

Using UserData Property to Share Data

You can use the UserData property of components in your G U IDE GUI to

share data. When you click the m ouse in the icon editing area, y ou select a

tool. You can use every tool in the Tool Palette to modify the ico n you are

editingbyalteringthetool’s

CData.TheGUIusestheUserData property

of each tool to record the function that you call when a tool is selected and

applied to the icon-editing area. Each too l alters different aspects of the icon

data. Here is an example of how the pencil tool works.

In the

CreateFcn for the pencil tool, add the user data that points to the

function for the pencil tool:

% in toolPalette

function too lPen cil_CreateFcn(hObject, eventdata, handles)

set(hObject,'UserData', struct('Callback', @pencilT ool Callback));

The Tool Palette tracks the currently selected tool in its h andl es structure’s

mCurrentTool field. You can get this structure from other GUIs after you

create the

handles structure of the Tool P alette. Set the currently selected

tool by calling

guidata after you click a button in the Tool Palette:

% in toolPalette

function too lPal ette_SelectionChangeFcn (hObject, ...

eventdata, han dles )

handles.mCurrentTool = hObject;

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Guide de l'utilisateur Page 369

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