Panel
Panel UI container
Description
A panel UI container groups UI components. Use the Panel
object
to modify the appearance and behavior of a panel after you create it.
Creation
Create a panel in an app using the uipanel
function.
Properties
Title
Title
— Title
character vector | string scalar | categorical array
Title, specified as a character vector, string scalar, or categorical array. If you specify this property as a categorical array, MATLAB® displays only the first element in the array.
MATLAB does not interpret a vertical slash ('|'
) character as
a line break, it displays as a vertical slash in the title.
If you want to specify a Unicode® character, pass the Unicode decimal
code to the char
function.
For example, ['Multiples of ' char(960)]
displays
as Multiples of
π.
TitlePosition
— Location of title
'lefttop'
(default) | 'centertop'
| 'righttop'
| ...
Location of the title, specified as 'lefttop'
,
'centertop'
, or 'righttop'
.
figure
-Based Apps
For panels in apps created with the figure
function, you
can additionally specify TitlePosition
as
'leftbottom'
, 'centerbottom'
, or
'rightbottom'
.
Color and Styling
ForegroundColor
— Title color
[0 0 0]
(default) | RGB triplet | hexadecimal color code | 'r'
| 'g'
| 'b'
| ...
Title color, specified as an RGB triplet, a hexadecimal color code, or one of the color options listed in the table.
RGB triplets and hexadecimal color codes are useful for specifying custom colors.
An RGB triplet is a three-element row vector whose elements specify the intensities of the red, green, and blue components of the color. The intensities must be in the range
[0,1]
; for example,[0.4 0.6 0.7]
.A hexadecimal color code is a character vector or a string scalar that starts with a hash symbol (
#
) followed by three or six hexadecimal digits, which can range from0
toF
. The values are not case sensitive. Thus, the color codes"#FF8800"
,"#ff8800"
,"#F80"
, and"#f80"
are equivalent.
Alternatively, you can specify some common colors by name. This table lists the named color options, the equivalent RGB triplets, and hexadecimal color codes.
Color Name | Short Name | RGB Triplet | Hexadecimal Color Code | Appearance |
---|---|---|---|---|
"red" | "r" | [1 0 0] | "#FF0000" | |
"green" | "g" | [0 1 0] | "#00FF00" | |
"blue" | "b" | [0 0 1] | "#0000FF" | |
"cyan"
| "c" | [0 1 1] | "#00FFFF" | |
"magenta" | "m" | [1 0 1] | "#FF00FF" | |
"yellow" | "y" | [1 1 0] | "#FFFF00" | |
"black" | "k" | [0 0 0] | "#000000" | |
"white" | "w" | [1 1 1] | "#FFFFFF" |
Here are the RGB triplets and hexadecimal color codes for the default colors MATLAB uses in many types of plots.
RGB Triplet | Hexadecimal Color Code | Appearance |
---|---|---|
[0 0.4470 0.7410] | "#0072BD" | |
[0.8500 0.3250 0.0980] | "#D95319" | |
[0.9290 0.6940 0.1250] | "#EDB120" | |
[0.4940 0.1840 0.5560] | "#7E2F8E" | |
[0.4660 0.6740 0.1880] | "#77AC30" | |
[0.3010 0.7450 0.9330] | "#4DBEEE" | |
[0.6350 0.0780 0.1840] | "#A2142F" |
BackgroundColor
— Background color
[0.94 0.94 0.94]
(default) | RGB triplet | hexadecimal color code | 'r'
| 'g'
| 'b'
| ...
Background color, specified as an RGB triplet, a hexadecimal color code, or one of the color options listed in the table.
RGB triplets and hexadecimal color codes are useful for specifying custom colors.
An RGB triplet is a three-element row vector whose elements specify the intensities of the red, green, and blue components of the color. The intensities must be in the range
[0,1]
; for example,[0.4 0.6 0.7]
.A hexadecimal color code is a character vector or a string scalar that starts with a hash symbol (
#
) followed by three or six hexadecimal digits, which can range from0
toF
. The values are not case sensitive. Thus, the color codes"#FF8800"
,"#ff8800"
,"#F80"
, and"#f80"
are equivalent.
Alternatively, you can specify some common colors by name. This table lists the named color options, the equivalent RGB triplets, and hexadecimal color codes.
Color Name | Short Name | RGB Triplet | Hexadecimal Color Code | Appearance |
---|---|---|---|---|
"red" | "r" | [1 0 0] | "#FF0000" | |
"green" | "g" | [0 1 0] | "#00FF00" | |
"blue" | "b" | [0 0 1] | "#0000FF" | |
"cyan"
| "c" | [0 1 1] | "#00FFFF" | |
"magenta" | "m" | [1 0 1] | "#FF00FF" | |
"yellow" | "y" | [1 1 0] | "#FFFF00" | |
"black" | "k" | [0 0 0] | "#000000" | |
"white" | "w" | [1 1 1] | "#FFFFFF" |
Here are the RGB triplets and hexadecimal color codes for the default colors MATLAB uses in many types of plots.
RGB Triplet | Hexadecimal Color Code | Appearance |
---|---|---|
[0 0.4470 0.7410] | "#0072BD" | |
[0.8500 0.3250 0.0980] | "#D95319" | |
[0.9290 0.6940 0.1250] | "#EDB120" | |
[0.4940 0.1840 0.5560] | "#7E2F8E" | |
[0.4660 0.6740 0.1880] | "#77AC30" | |
[0.3010 0.7450 0.9330] | "#4DBEEE" | |
[0.6350 0.0780 0.1840] | "#A2142F" |
BorderType
— Panel border
'line'
| 'none'
| ...
Panel border, specified as 'line'
or 'none'
.
For panels in apps created with the uifigure
function, the
default value of BorderType
is 'line'
.
figure
-Based Apps
For panels in apps created with the figure
function, the
default value of BorderType
is 'etchedin'
.
You can additionally specify the panel border as 'etchedin'
,
'etchedout'
, 'beveledin'
, or
'beveledout'
.
For a 3-D appearance, use etched or beveled borders.
Use the
BorderColor
andShadowColor
properties to specify the color of 3-D borders.For a simpler appearance, use a line border.
Use the
BorderColor
property to specify the line border color.
BorderWidth
— Border width
1 (default) | positive integer value
Border width, specified as a positive integer value. The unit of measurement is pixels.
BorderColor
— Border color
RGB triplet | hexadecimal color code | 'r'
| 'g'
| 'b'
| ...
Border color, specified as an RGB triplet, a hexadecimal color code, or one of the color options listed in the table.
RGB triplets and hexadecimal color codes are useful for specifying custom colors.
An RGB triplet is a three-element row vector whose elements specify the intensities of the red, green, and blue components of the color. The intensities must be in the range
[0,1]
; for example,[0.4 0.6 0.7]
.A hexadecimal color code is a character vector or a string scalar that starts with a hash symbol (
#
) followed by three or six hexadecimal digits, which can range from0
toF
. The values are not case sensitive. Thus, the color codes"#FF8800"
,"#ff8800"
,"#F80"
, and"#f80"
are equivalent.
Alternatively, you can specify some common colors by name. This table lists the named color options, the equivalent RGB triplets, and hexadecimal color codes.
Color Name | Short Name | RGB Triplet | Hexadecimal Color Code | Appearance |
---|---|---|---|---|
"red" | "r" | [1 0 0] | "#FF0000" | |
"green" | "g" | [0 1 0] | "#00FF00" | |
"blue" | "b" | [0 0 1] | "#0000FF" | |
"cyan"
| "c" | [0 1 1] | "#00FFFF" | |
"magenta" | "m" | [1 0 1] | "#FF00FF" | |
"yellow" | "y" | [1 1 0] | "#FFFF00" | |
"black" | "k" | [0 0 0] | "#000000" | |
"white" | "w" | [1 1 1] | "#FFFFFF" |
Here are the RGB triplets and hexadecimal color codes for the default colors MATLAB uses in many types of plots.
RGB Triplet | Hexadecimal Color Code | Appearance |
---|---|---|
[0 0.4470 0.7410] | "#0072BD" | |
[0.8500 0.3250 0.0980] | "#D95319" | |
[0.9290 0.6940 0.1250] | "#EDB120" | |
[0.4940 0.1840 0.5560] | "#7E2F8E" | |
[0.4660 0.6740 0.1880] | "#77AC30" | |
[0.3010 0.7450 0.9330] | "#4DBEEE" | |
[0.6350 0.0780 0.1840] | "#A2142F" |
Font
FontName
— Font name
system supported font name
Font name, specified as a system supported font name. The default font depends on the specific operating system and locale.
If the specified font is not available, then MATLAB uses the best match among the fonts available on the system where the app is running.
Example: 'Arial'
figure
-Based Apps
For panels in apps created with the
figure
function, you can additionally specify the font name
as 'FixedWidth'
. This uses fixed-width font that looks good in
any locale. The actual fixed-width font used depends on the FixedWidthFontName
property of the root object. Changing the FixedWidthFontName
property causes an immediate update of the display to use the new font.
FontSize
— Font size
positive number
Font size, specified as a positive number. The FontUnits
property specifies the units. The default font size depends on the specific operating
system and locale.
Example: 14
FontWeight
— Font weight
'normal'
(default) | 'bold'
Font weight, specified as one of these values:
'normal'
— Default weight as defined by the particular font'bold'
— Thicker character outlines than'normal'
Not all fonts have a bold font weight. For fonts that do not, specifying
'bold'
results in the normal font weight.
FontAngle
— Font angle
'normal'
(default) | 'italic'
Font angle, specified as 'normal'
or 'italic'
.
Not all fonts have an italic font angle. For fonts that do not, specifying
'italic'
results in the normal font angle.
FontUnits
— Font unit of measurement
'pixels'
| 'points'
| 'normalized'
| 'inches'
| 'centimeters'
Font unit of measurement, specified as one of the values in this table.
Units Value | Description |
---|---|
'pixels' (default) | Distances in pixels are independent of your system resolution on Windows® and Macintosh systems:
|
'points' | One point is 1/72nd of an inch. |
'normalized' | Normalized values for specifying the font size as a fraction of the height. When you resize a UI component, MATLAB scales the displayed font to maintain that fraction. |
'inches' | Inches. |
'centimeters' | Centimeters. |
figure
-Based Apps
For panels in apps created using the figure
function, the
default value of FontUnits
is
'points'
.
Interactivity
Visible
— State of visibility
'on'
(default) | on/off logical value
State of visibility, specified as 'on'
or 'off'
,
or as numeric or logical 1
(true
) or
0
(false
). A value of 'on'
is equivalent to true
, and 'off'
is equivalent to
false
. Thus, you can use the value of this property as a logical
value. The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState
.
'on'
— Display the object.'off'
— Hide the object without deleting it. You still can access the properties of an invisible UI component.
To make your app start faster, set the Visible
property to
'off'
for all components that do not need to appear at
startup.
Changing the size of an invisible container triggers the
SizeChangedFcn
callback when it becomes visible.
Changing the Visible
property of a container does
not change the values of the Visible
properties of child components. This is true even though hiding the container causes the
child components to be hidden.
ContextMenu
— Context menu
empty GraphicsPlaceholder
array (default) | ContextMenu
object
Context menu, specified as a ContextMenu
object created using the uicontextmenu
function. Use this property to display a context menu when
you right-click on a component.
Position
Position
— Location and size of panel, including borders and title
[left bottom width height]
Location and size of the panel, including borders and title,
specified as a four-element vector of the form [left bottom
width height]
. This table describes each element in the
vector.
Element | Description |
---|---|
left | Distance from the inner left edge of the parent container to the outer left edge of the panel |
bottom | Distance from the inner bottom edge of the parent container to the outer bottom edge of the panel |
width | Distance between the right and left outer edges of the panel |
height | Distance between the top and bottom outer edges of the panel |
All measurements are in units
specified by the Units
property.
The Position
values are relative to the
drawable area of the parent container. The drawable area is the area
inside the borders of the container and does not include the area occupied by decorations such
as a menu bar or title.
Note
If the panel is parented to a grid layout manager, the value of the
Position
property is not immediately updated. To use the
Position
value to resize the panel children relative to the
panel size, use a SizeChangedFcn
callback.
InnerPosition
— Location and size of panel, excluding borders and title
[left bottom width height]
This property is read-only.
Location and size of the panel, excluding borders and title, returned as a
four-element vector of the form [left bottom width height]
. This
table describes each element in the vector.
Value | Description |
---|---|
left | Distance from the inner left edge of the parent container to the inner left edge of the panel. |
bottom | Distance from the inner bottom edge of the parent container to the inner bottom edge of the panel. |
width | Distance between the inner edges of the panel’s right and left borders. |
height | Distance between the inner edges of the panel’s top and bottom borders. This distance excludes the title, if it exists. |
All measurements are in units specified by the
Units
property.
Note
These are some important points to consider when using the
InnerPosition
property:
InnerPosition
values are affected by the presence (or absence) of a title, the font characteristics, and theBorderType
.InnerPosition
values are relative to the parent container’s drawable area. The drawable area is the area inside the borders of the container and does not include the area occupied by the title.
OuterPosition
— Location and size of panel, including borders and title
[left bottom width height]
Location and size of the panel, including borders and title, specified as a
four-element vector of the form [left bottom width height]
. All
measurements are in units specified by the Units
property.
This property value is identical to the Position
property
value.
Units
— Units of measurement
'pixels'
| 'normalized'
| 'inches'
| 'centimeters'
| 'points'
| 'characters'
Units of measurement, specified as one of the values in this table.
Units Value | Description |
---|---|
'pixels' (default in uifigure -based apps) | Distances in pixels are independent of your system resolution on Windows and Macintosh systems:
On Linux systems, the size of a pixel is determined by your system resolution. |
'normalized' (default in figure -based apps) | These units are normalized with respect to the parent container. The lower-left corner of the container maps to |
'inches' | Inches. |
'centimeters' | Centimeters. |
'points' | Points. One point equals 1/72nd of an inch. |
'characters' | These units are based on the default uicontrol font of the graphics root object:
To access the default uicontrol font, use |
The recommended value is 'pixels'
, because most MATLAB app building functionality measures distances in pixels. You can create an
object that rescales based on the size of the parent container by parenting the object
to a grid layout manager created using the uigridlayout
function. For more information, see Lay Out Apps Programmatically.
Callbacks
SizeChangedFcn
— Size change callback
''
(default) | function handle | cell array | character vector
Size change callback, specified as one of these values:
A function handle.
A cell array in which the first element is a function handle. Subsequent elements in the cell array are the arguments to pass to the callback function.
A character vector containing a valid MATLAB expression (not recommended). MATLAB evaluates this expression in the base workspace.
Define this callback to customize the app layout when the size of this container
changes (e.g., when the user resizes the window). In it, write code to adjust the
Position
property of the child components.
Note
In uifigure
-based apps, the
SizeChangedFcn
callback will not execute unless the
AutoResizeChildren
property of this container is set to
'off'
. In App Designer, you can make the
SizeChangedFcn
executable by selecting the container and
clearing the AutoResizeChildren check box in the component tab
of the Component Browser.
The SizeChangedFcn
callback executes when:
This container becomes visible for the first time.
This container is visible while its size changes.
This container becomes visible for the first time after its size changes. This situation occurs when the size changes while the container is invisible, and then it becomes visible later.
Other important points to consider when defining a
SizeChangedFcn
callback:
Consider delaying the display of this container until after all the variables that the
SizeChangedFcn
uses are defined. This practice can prevent theSizeChangedFcn
callback from returning an error. To delay the display of the container, set itsVisible
property to'off'
. Then, set theVisible
property to'on'
after you define the variables that yourSizeChangedFcn
callback uses.If your app contains nested containers, they resize from the inside out.
To access the container that is resizing from within the
SizeChangedFcn
, refer to the source object (the first input argument in the callback) or use thegcbo
function.
In uifigure
-based apps, alternate ways to specify resize
behavior are to create a GridLayout
object or use the auto-reflow
options in App Designer. These options can be easier to use than
SizeChangedFcn
callbacks. However, there are some advantages
that SizeChangedFcn
callbacks have over these options. For example:
Resizing a component up to a minimum or maximum size that you define.
Implementing non-linear resize behaviors.
ButtonDownFcn
— Button-press callback function
''
(default) | function handle | cell array | character vector
Button-press callback function, specified as one of these values:
A function handle.
A cell array in which the first element is a function handle. Subsequent elements in the cell array are the arguments to pass to the callback function.
A character vector containing a valid MATLAB expression (not recommended). MATLAB evaluates this expression in the base workspace.
For more information about specifying a callback property value as a function handle, cell array, or character vector, see Specify a Callback Function.
The ButtonDownFcn
callback is a function that executes when the user
clicks a mouse button within the container.
CreateFcn
— Creation function
''
(default) | function handle | cell array | character vector
Object creation function, specified as one of these values:
Function handle.
Cell array in which the first element is a function handle. Subsequent elements in the cell array are the arguments to pass to the callback function.
Character vector containing a valid MATLAB expression (not recommended). MATLAB evaluates this expression in the base workspace.
For more information about specifying a callback as a function handle, cell array, or character vector, see Callbacks in App Designer.
This property specifies a callback function to execute when MATLAB creates the object. MATLAB initializes all property values before executing the CreateFcn
callback. If you do not specify the CreateFcn
property, then MATLAB executes a default creation function.
Setting the CreateFcn
property on an existing component has no effect.
If you specify this property as a function handle or cell array, you can access the object that is being created using the first argument of the callback function. Otherwise, use the gcbo
function to access the object.
DeleteFcn
— Deletion function
''
(default) | function handle | cell array | character vector
Object deletion function, specified as one of these values:
Function handle.
Cell array in which the first element is a function handle. Subsequent elements in the cell array are the arguments to pass to the callback function.
Character vector containing a valid MATLAB expression (not recommended). MATLAB evaluates this expression in the base workspace.
For more information about specifying a callback as a function handle, cell array, or character vector, see Callbacks in App Designer.
This property specifies a callback function to execute when MATLAB deletes the object. MATLAB executes the DeleteFcn
callback before destroying the
properties of the object. If you do not specify the DeleteFcn
property, then MATLAB executes a default deletion function.
If you specify this property as a function handle or cell array, you can access the
object that is being deleted using the first argument of the callback function.
Otherwise, use the gcbo
function to access the
object.
Callback Execution Control
Interruptible
— Callback interruption
'on'
(default) | on/off logical value
Callback interruption, specified as 'on'
or 'off'
, or as
numeric or logical 1
(true
) or
0
(false
). A value of 'on'
is equivalent to true
, and 'off'
is equivalent to
false
. Thus, you can use the value of this property as a logical
value. The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState
.
This property determines if a running callback can be interrupted. There are two callback states to consider:
The running callback is the currently executing callback.
The interrupting callback is a callback that tries to interrupt the running callback.
MATLAB determines callback interruption behavior whenever it executes a command that
processes the callback queue. These commands include drawnow
, figure
, uifigure
, getframe
, waitfor
, and pause
.
If the running callback does not contain one of these commands, then no interruption occurs. MATLAB first finishes executing the running callback, and later executes the interrupting callback.
If the running callback does contain one of these commands, then the
Interruptible
property of the object that owns the running
callback determines if the interruption occurs:
If the value of
Interruptible
is'off'
, then no interruption occurs. Instead, theBusyAction
property of the object that owns the interrupting callback determines if the interrupting callback is discarded or added to the callback queue.If the value of
Interruptible
is'on'
, then the interruption occurs. The next time MATLAB processes the callback queue, it stops the execution of the running callback and executes the interrupting callback. After the interrupting callback completes, MATLAB then resumes executing the running callback.
Note
Callback interruption and execution behave differently in these situations:
If the interrupting callback is a
DeleteFcn
,CloseRequestFcn
, orSizeChangedFcn
callback, then the interruption occurs regardless of theInterruptible
property value.If the running callback is currently executing the
waitfor
function, then the interruption occurs regardless of theInterruptible
property value.If the interrupting callback is owned by a
Timer
object, then the callback executes according to schedule regardless of theInterruptible
property value.
BusyAction
— Callback queuing
'queue'
(default) | 'cancel'
Callback queuing, specified as 'queue'
or 'cancel'
. The BusyAction
property determines how MATLAB handles the execution of interrupting callbacks. There are two callback states to consider:
The running callback is the currently executing callback.
The interrupting callback is a callback that tries to interrupt the running callback.
The BusyAction
property determines callback queuing behavior only
when both of these conditions are met:
Under these conditions, the BusyAction
property of the
object that owns the interrupting callback determines how MATLAB handles the interrupting callback. These are possible values of the
BusyAction
property:
'queue'
— Puts the interrupting callback in a queue to be processed after the running callback finishes execution.'cancel'
— Does not execute the interrupting callback.
BeingDeleted
— Deletion status
on/off logical value
This property is read-only.
Deletion status, returned as an on/off logical value of type matlab.lang.OnOffSwitchState
.
MATLAB sets the BeingDeleted
property to
'on'
when the DeleteFcn
callback begins
execution. The BeingDeleted
property remains set to
'on'
until the component object no longer exists.
Check the value of the BeingDeleted
property to verify that the object is not about to be deleted before querying or modifying it.
HitTest
— Ability to become current object
'on'
(default) | on/off logical value
Ability to become current object, specified as
'on'
or 'off'
, or as numeric or logical
1
(true
) or 0
(false
). A value of 'on'
is equivalent to
true
, and 'off'
is equivalent to
false
. Thus, you can use the value of this property as a logical
value. The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState
.
'on'
— Sets the current object to thePanel
when the user clicks the component in the running app. Both theCurrentObject
property of theFigure
and thegco
function return thePanel
as the current object.'off'
— Sets the current object to be the closest ancestor of thePanel
whoseHitTest
is'on'
when the user clicks the component in the running app.
Parent/Child
Parent
— Parent container
Figure
object (default) | Panel
object | Tab
object | ButtonGroup
object | GridLayout
object
Parent container, specified as a Figure
object
or one of its child containers: Tab
, Panel
, ButtonGroup
, or
GridLayout
. If no container is specified,
MATLAB calls the figure
function to create a new Figure
object that serves as the parent container.
Children
— Panel
children
empty GraphicsPlaceholder
array (default) | 1-D array of component objects
Panel
child objects, returned as an empty
GraphicsPlaceholder
or a 1-D array of component objects. The
children of a Panel
can be any component object,
including another Panel
.
You cannot add or remove child components using the Children
property. Use this property to view the list of children or to reorder the children.
The order of the child objects in this array reflects the front-to-back stacking order
of the components on the screen.
To add a child object to this list, set the Parent
property of
the child object to the Panel
object.
HandleVisibility
— Visibility of object handle
'on'
(default) | 'callback'
| 'off'
Visibility of the object handle, specified as 'on'
, 'callback'
,
or 'off'
.
This property controls the visibility of the object in its parent's
list of children. When an object is not visible in its parent's list
of children, it is not returned by functions that obtain objects by
searching the object hierarchy or querying properties. These functions
include get
, findobj
, clf
,
and close
. Objects are valid
even if they are not visible. If you can access an object, you can
set and get its properties, and pass it to any function that operates
on objects.
HandleVisibility Value | Description |
---|---|
'on' | The object is always visible. |
'callback' | The object is visible from within callbacks or functions invoked by callbacks, but not from within functions invoked from the command line. This option blocks access to the object at the command-line, but allows callback functions to access it. |
'off' | The object is invisible at all times. This option is useful
for preventing unintended changes to the UI by another function. Set
the HandleVisibility to 'off' to
temporarily hide the object during the execution of that function.
|
Identifiers
Type
— Type of graphics object
'uipanel'
This property is read-only.
Type of graphics object, returned as 'uipanel'
.
Tag
— Object identifier
''
(default) | character vector | string scalar
Object identifier, specified as a character vector or string scalar. You can specify a unique Tag
value to serve as an identifier for an object. When you need access to the object elsewhere in your code, you can use the findobj
function to search for the object based on the Tag
value.
UserData
— User data
[]
(default) | array
User data, specified as any MATLAB array. For example, you can specify a scalar, vector, matrix, cell array, character array, table, or structure. Use this property to store arbitrary data on an object.
If you are working in App Designer, create public or private properties in the app to share data instead of using the UserData
property. For more information, see Share Data Within App Designer Apps.
uifigure
-Based Apps Only
Scrollable
— Ability to scroll
'off'
(default) | on/off logical value
Note
This property is valid only for panels in apps created using the
uifigure
function.
Ability to scroll, specified as 'off'
or
'on'
, or as numeric or logical 1
(true
) or 0
(false
). A
value of 'on'
is equivalent to true
, and
'off'
is equivalent to false
. Thus, you can
use the value of this property as a logical value. The value is stored as an on/off
logical value of type matlab.lang.OnOffSwitchState
.
Setting this property to 'on'
enables scrolling within the
container. However, there are additional requirements:
The child components in the container must occupy a larger area than the container can display at one time.
Components that do not fit in the container must be above or to the right of the container. You cannot scroll to components that are below or to the left of the container.
If the container contains a grid layout manager, the
Scrollable
property of the container has no effect. To enable scrolling, instead set theScrollable
property of theGridLayout
object to'on'
.
Certain types of charts and axes do not support scrollable containers. However, you can place the chart or axes in a nonscrollable panel, and then place the panel in the scrollable container. For more information, see Display Graphics in App Designer.
Enable
— Operational state
'on'
(default) | on/off logical value
Note
This property is valid only for panels in apps created using the
uifigure
function.
Operational state, specified as 'on'
or
'off'
, or as numeric or logical 1
(true
) or 0
(false
). A
value of 'on'
is equivalent to true
, and
'off'
is equivalent to false
. Thus, you can
use the value of this property as a logical value. The value is stored as an on/off
logical value of type matlab.lang.OnOffSwitchState
.
If you set this property to
'on'
, the app user can interact with the component.If you set this property to
'off'
, the component appears dimmed, indicating that the app user cannot interact with it, and that it will not trigger a callback.
Changing the value of the Enable
property for a panel does
not change the value of the Enable
property for UI components contained within that panel.
Tooltip
— Tooltip
''
(default) | character vector | cell array of character vectors | string array | 1-D categorical array
Note
This property is valid only for panels in apps created using the
uifigure
function.
Tooltip, specified as a character vector, cell array of character vectors, string array, or 1-D categorical array. Use this property to display a message when the user hovers the pointer over the component at run time. To display multiple lines of text, specify a cell array of character vectors or a string array. Each element in the array becomes a separate line of text. If you specify this property as a categorical array, MATLAB uses the values in the array, not the full set of categories.
AutoResizeChildren
— Automatically resize children
'on'
(default) | on/off logical value
Note
This property is valid only for panels in apps created using the
uifigure
function.
Automatically resize children, specified as 'on'
or
'off'
, or as numeric or logical 1
(true
) or 0
(false
). A
value of 'on'
is equivalent to true
, and
'off'
is equivalent to false
. Thus, you can
use the value of this property as a logical value. The value is stored as an on/off
logical value of type matlab.lang.OnOffSwitchState
.
'on'
— Child components automatically resize when the container resizes.'off'
— Child components do not resize.
The AutoResizeChildren
property affects direct
children of the container, not children inside nested containers.
To customize the resize behavior, set the AutoResizeChildren
property to 'off'
and create a SizeChangedFcn
callback for the container. For more information, see Manage App Resize Behavior Programmatically.
To disable resizing of an app, set the Resize
property of the figure to
'off'
.
Layout
— Layout options
empty LayoutOptions
array (default) | GridLayoutOptions
object
Note
This property is valid only for panels in apps created using the
uifigure
function.
Layout options, specified as a
GridLayoutOptions
object. This property specifies options for
components that are children of grid layout containers. If the component is not a
child of a grid layout container (for example, it is a child of a figure or panel),
then this property is empty and has no effect. However, if the component is a child of
a grid layout container, you can place the component in the desired row and column of
the grid by setting the Row
and Column
properties on the GridLayoutOptions
object.
For example, this code places a panel in the third row and second column of its parent grid.
g = uigridlayout([4 3]); p = uipanel(g); p.Layout.Row = 3; p.Layout.Column = 2;
To make the panel span multiple rows or columns, specify the
Row
or Column
property as a two-element
vector. For example, this panel spans columns 2
through
3
:
p.Layout.Column = [2 3];
figure
-Based Apps Only
ShadowColor
— Border shadow color
RGB triplet | hexadecimal color code | 'r'
| 'g'
| 'b'
| ...
Note
This property is valid only for panels in apps created using the
figure
function.
Border shadow color, specified as an RGB triplet, a hexadecimal color code, or one of the color options listed in the table.
RGB triplets and hexadecimal color codes are useful for specifying custom colors.
An RGB triplet is a three-element row vector whose elements specify the intensities of the red, green, and blue components of the color. The intensities must be in the range
[0,1]
; for example,[0.4 0.6 0.7]
.A hexadecimal color code is a character vector or a string scalar that starts with a hash symbol (
#
) followed by three or six hexadecimal digits, which can range from0
toF
. The values are not case sensitive. Thus, the color codes"#FF8800"
,"#ff8800"
,"#F80"
, and"#f80"
are equivalent.
Alternatively, you can specify some common colors by name. This table lists the named color options, the equivalent RGB triplets, and hexadecimal color codes.
Color Name | Short Name | RGB Triplet | Hexadecimal Color Code | Appearance |
---|---|---|---|---|
"red" | "r" | [1 0 0] | "#FF0000" | |
"green" | "g" | [0 1 0] | "#00FF00" | |
"blue" | "b" | [0 0 1] | "#0000FF" | |
"cyan"
| "c" | [0 1 1] | "#00FFFF" | |
"magenta" | "m" | [1 0 1] | "#FF00FF" | |
"yellow" | "y" | [1 1 0] | "#FFFF00" | |
"black" | "k" | [0 0 0] | "#000000" | |
"white" | "w" | [1 1 1] | "#FFFFFF" |
Here are the RGB triplets and hexadecimal color codes for the default colors MATLAB uses in many types of plots.
RGB Triplet | Hexadecimal Color Code | Appearance |
---|---|---|
[0 0.4470 0.7410] | "#0072BD" | |
[0.8500 0.3250 0.0980] | "#D95319" | |
[0.9290 0.6940 0.1250] | "#EDB120" | |
[0.4940 0.1840 0.5560] | "#7E2F8E" | |
[0.4660 0.6740 0.1880] | "#77AC30" | |
[0.3010 0.7450 0.9330] | "#4DBEEE" | |
[0.6350 0.0780 0.1840] | "#A2142F" |
Object Functions
scroll | Scroll to location within component |
isInScrollView | Determine if component is visible in scrollable container |
Examples
Set and Access Panel Property Values
Create a panel in a UI figure, and customize its appearance by specifying property values.
fig = uifigure; p = uipanel(fig, ... "Title","Data", ... "BackgroundColor","white");
Determine the panel location and size.
s = p.Position
s = 1×4
20 20 260 221
Update the width and height of the panel by modifying the third and fourth elements of the panel Position
property.
p.Position(3:4) = [150 380];
Create Scrollable Panel
The Scrollable
property enables scrolling within
a panel that has components outside its borders. Scrolling is only possible when the panel
is in a figure created with the uifigure
function. App Designer uses this
type of figure for creating apps.
Create a panel in a UI figure. Add six UI components to the panel. The first two components are not visible because they lie outside the upper border of the panel.
fig = uifigure; p = uipanel(fig,"Position",[20 20 196 135]); ef1 = uieditfield(p,"Text","Position",[11 165 140 22],"Value","First Name"); ef2 = uieditfield(p,"Text","Position",[11 140 140 22],"Value","Last Name"); ef3 = uieditfield(p,"Text","Position",[11 115 140 22],"Value","Address"); dd = uidropdown(p,"Position",[11 90 140 22],"Items",["Male","Female"]); cb = uicheckbox(p,"Position",[11 65 140 22],"Text","Member"); btn = uibutton(p,"Position",[11 40 140 22],"Text","Send");
Enable scrolling in the panel by setting the Scrollable
property to "on"
. By default, the scroll bar is scrolled to the top
of the panel.
p.Scrollable = "on";
Version History
Introduced before R2006aR2023a: Change panel border color using BorderColor
property, not HighlightColor
You can change the border color of a panel in both uifigure
-based
and figure
-based apps by using the BorderColor
property.
The BorderColor
property is recommended over the
HighlightColor
property, which is supported only in
figure
-based apps. However, there are no plans to remove support for
HighlightColor
.
R2022b: Change panel border width in uifigure
-based apps
In apps created in App Designer and using the uifigure
function, use
the BorderWidth
property to change the border width of the
panel.
R2020b: Turn interaction off and on
To control whether a panel responds to user interaction, use the
Enable
property. When the Enable
property is set
to 'on'
, you can interact with the panel and with UI components within it
as long as they are enabled. When the Enable
property is set to
'off'
, you cannot interact with the panel or its content.
The Enable
property is supported only for panels in App Designer
and uifigure
-based apps.
R2020a: UIContextMenu
property is not recommended
Starting in R2020a, using the UIContextMenu
property to assign a
context menu to a graphics object or UI component is not recommended. Use the
ContextMenu
property instead. The property values are the
same.
There are no plans to remove support for the UIContextMenu
property
at this time. However, the UIContextMenu
property no longer appears in
the list returned by calling the get
function on a graphics object or UI
component.
R2015a: ResizeFcn
property is not recommended
Starting in R2015a, using the ResizeFcn
property to assign a
callback function to resize a UI component is not recommended. Use the
SizeChangedFcn
property instead. The property values are the
same.
There are no plans to remove support for the ResizeFcn
property at
this time. However, the ResizeFcn
property no longer appears in the
list returned by calling the get
function on a UI component.
R2014b: Selected
property is not recommended
Starting in R2014b, using the Selected
property is not recommended.
It no longer has any effect on objects of this type.
R2014b: SelectionHighlight
property is not recommended
Starting in R2014b, using the SelectionHighlight
property is not
recommended. It no longer has any effect on objects of this type.
R2014b: Clipping
property is not recommended
Starting in R2014b, using the Clipping
property is not recommended.
It no longer has any effect on objects of this type.
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