Create figure for designing apps
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Syntax
fig = uifigure
fig = uifigure(Name,Value)
Description
example
fig = uifigureFigure object. This is the type of figure that App Designer uses.
example
fig = uifigure(Name,Value)
Examples
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Create UI Figure
Create a blank figure for app building.
fig = uifigure;
Set and Access Figure Properties
Open Live Script
Create a UI figure with a specific title and icon.
fig = uifigure("Name","Plotted Results", ... "Icon","peppers.png");
Query the figure background color.
c = fig.Color
Change Figure Size
Create a default UI figure.
fig = uifigure;
Get the location, width, and height of the figure.
fig.Position
ans = 681 559 560 420
This means that the figure window is positioned 681 pixels to the right and 559 pixels above the bottom left corner of the primary display, and is 560 pixels wide and 420 pixels tall.
Halve the figure width and height by adjusting the third and fourth elements of the position vector.
fig.Position(3:4) = [280 210];
Create Modal UI Figure
Open Script
Create two UI figure windows. Block interactions in Figure 1 by specifying 'modal' as the WindowStyle property value for Figure 2. Notice that you cannot interact with Figure 1 until Figure 2 is closed.
fig1 = uifigure('Name','Figure 1');fig1.Position = [500 500 370 270];fig2 = uifigure('Name','Figure 2');fig2.Position = [540 450 370 270];fig2.WindowStyle = 'modal';
Code CloseRequestFcn to Confirm Closing UI Figure
Code the CloseRequestFcn callback to open a modal confirmation dialog box when the user tries to close the window.
Copy and paste this code into the MATLAB® Editor, and then run closeFig.
function closeFigfig = uifigure('Position',[100 100 425 275]);fig.CloseRequestFcn = @(src,event)my_closereq(src); function my_closereq(fig) selection = uiconfirm(fig,'Close the figure window?',... 'Confirmation'); switch selection case 'OK' delete(fig) case 'Cancel' return end endend
Click the figure close button. The confirmation dialog box opens.
Change Mouse Pointer Symbol
Change the displayed mouse pointer symbol when you hover over a push button.
This program file, called setMousePointer.m, shows you how to:
Create a UI figure which executes custom code when the mouse is moved over a button. To do this, use the
@operator to assign themouseMovedfunction handle to theWindowButtonMotionFcnproperty of the figure.Create a push button and specify its coordinates and label.
Create a callback function called
mouseMovedwith the custom code you want to execute when the mouse moves over the button. In the function, query theCurrentPointproperty to determine the mouse pointer coordinates. Set thePointerproperty to'hand'if the pointer coordinates are within the push button coordinates.
Run setMousePointer. Then move the mouse over the push button to see the mouse pointer symbol change from an arrow to a hand.
function setMousePointerfig = uifigure('Position',[500 500 375 275]);fig.WindowButtonMotionFcn = @mouseMoved;btn = uibutton(fig);btnX = 50;btnY = 50;btnWidth = 100;btnHeight = 22;btn.Position = [btnX btnY btnWidth btnHeight];btn.Text = 'Submit Changes'; function mouseMoved(src,event) mousePos = fig.CurrentPoint; if (mousePos(1) >= btnX) && (mousePos(1) <= btnX + btnWidth) ... && (mousePos(2) >= btnY) && (mousePos(2) <= btnY + btnHeight) fig.Pointer = 'hand'; else fig.Pointer = 'arrow'; end endend
Input Arguments
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Name-Value Arguments
Specify optional pairs of arguments as Name1=Value1,...,NameN=ValueN, where Name is the argument name and Value is the corresponding value. Name-value arguments must appear after other arguments, but the order of the pairs does not matter.
Example: uifigure(Name="My App") specifies My App as the title of the UI figure.
Before R2021a, use commas to separate each name and value, and enclose Name in quotes.
Example: uifigure("Name","My App") specifies My App as the title of the UI figure.
Note
The properties listed here are a subset of the available properties. For the full list, see UI Figure Properties.
WindowStyle — Window style
'normal' (default) | 'modal' | 'alwaysontop'
Window style, specified as one of the following:
'normal'— The figure window is independent of other windows, and the other windows are accessible while the figure is displaying.'modal'— The figure displays on top of all existing figure windows with normal window style, making them inaccessible as long as the top figure exists and remains modal. However, any new figures created after a modal figure will display.When multiple modal windows exist, the most recently created window keeps focus and stays above all other windows until it becomes invisible, or is returned to a normal window style, or is deleted. At that time, focus reverts to the window that last had focus.
'alwaysontop'— The figure displays on top of all other windows, including modal figure windows and windows from non-MATLAB applications. The other windows are still accessible.
Note
These are some important characteristics of the WindowStyle property and some recommended best practices:
When you create UI windows, always specify the
WindowStyleproperty. If you also want to set theResizeor Position properties of the figure, then set theWindowStyleproperty first.You can change the
WindowStyleproperty of a figure at any time, including when the figure is visible and contains children. However on some systems, setting this property might cause the figure to flash or disappear and reappear, depending on the system's implementation of normal and modal windows. For best visual results, set theWindowStyleproperty at creation time or when the figure is invisible.
UI Figure Modal Window Style Behavior
When WindowStyle is set to 'modal', the UI figure window blocks keyboard and mouse interactions in a UI figure window that was created before it and has its Visible property set to 'on'. For instance, in this example Figure 3 is modal with respect to Figure 2 and Figure 2 is modal with respect to Figure 1.
fig1 = uifigure('Name','Figure 1');fig1.WindowStyle = 'modal';fig2 = uifigure('Name','Figure 2');fig2.WindowStyle = 'modal';fig3 = uifigure('Name','Figure 3');fig3.WindowStyle = 'modal';
The modality hierarchy is not preserved if there is a combination of modal and normal figures in the hierarchy of figures.
Unlike modal figures created with the figure function, modal figures created with the uifigure function do not block access to figures created with the figure function or the MATLAB desktop. Interactions with application windows other than MATLAB are also not blocked.
Typing Ctrl+C when a modal figure has focus causes that figure to revert to a 'normal' WindowStyle property setting. This allows the user to type at the command line.
UI figures with the WindowStyle property set to 'modal' and the Visible property set to 'off' do not behave modally until MATLAB makes them visible. Therefore, you can hide a modal window for later reuse, instead of destroying it.
Modal figures do not display menu children, built-in menus, or toolbars. But, it is not an error to create menus in a modal figure or to change the WindowStyle property setting to 'modal' on a figure with menu children. The Menu objects exist and the figure retains them. If you reset the UI figure WindowStyle property to 'normal', the menus display.
Limitations
Currently, you cannot pass a
Figureobject created with theuifigurefunction to the print function. If you attempt to do so, MATLAB throws an error. For more information, see Display Graphics in App Designer.
Tips
Use the graphics root object to set default values on the root level for other types of objects. For example, set the default colormap for all future figures to the
summercolormap.To restore a property to its original MATLAB default, use theset(groot,'DefaultFigureColormap',summer)'remove'keyword.For more information on setting default values, see Default Property Values.set(groot,'DefaultFigureColormap','remove')
To bring a figure window to the front, use the focus function.
Version History
Introduced in R2016a
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R2021a: Create UI figures that remain in the foreground
To keep a specific UI figure window in front of other windows, set the WindowStyle property to 'alwaysontop'. Unlike modal figures, UI figure windows with this property setting do not restrict keyboard and mouse interactions.
R2020b: Create modal UI figures
To restrict keyboard and mouse interactions to a specific UI figure window, set the WindowStyle property to 'modal'.
R2020b: Specify custom icons
To add a custom icon to a UI figure window, set the Icon property to an image file or an m-by-n-by-3 truecolor array.
See Also
Functions
- uipanel | uibuttongroup | uitab | scroll
Properties
- UI Figure Properties
Tools
- App Designer
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