MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Manual de usuario descargar pdf (Pagina 321)

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Background Color. The default component background color is the standard

system background color on which the GUI is running. This color varies on

different computer systems, e.g., the standard shade of gray on the PC differs

from that on UNIX, and may not match the default GUI background color.

The

prepareLayout function sets the background color of the GUI to be the

same as the default component background color. This provides a consistent

look within the GUI, as well as with other application GUIs.

It first retrieves the default component background color from the root object.

Then sets the GUI background color using the figure’s

Color property.

defaultColor = get(0,'defaultuicontrolbackgroundcolor');

if isa(handle(topContainer),'figure')

...

% Make figure color match that of GUI objects

set(topContainer, 'Color',defaultColor);

end

Selecting Units.

The prepareLayout function decides what units to use based on

the GUI’s resizability. It uses

strcmpi to determine the value of the GUI’s

Resize property. Depending on the outcome, it sets the

Units properties of all

the objects to either

Normalized or Characters.

% Make the GUI run properly across multiple platforms by using

% the proper units

if strcmpi(get(topContainer, 'Resize'),'on')

set(allObjects(isprop(allObjects,'Units')),...

'Units','Normalized');

else

set(allObjects(isprop(allObjects,'Units')),...

'Units','Characters');

end

For a resizable figure, normalized units map the lower-left corner of the figure

and of each component to (0,0) and the upper-right corner to (1.0,1.0). Because

of this, component size is automatically adjusted to its parent’s size when the

GUI is displayed.

For a nonresizable figure, character units automatically adjusts the size and

relative spacing of components as the GUI displays on different computers.

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Manual de usuario Pagina 321