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Author Block Masks

Customize block appearance, user interface, and block diagram

A block mask is a custom user interface that you can create for a block. Mask a block to hide its underlying implementation details and provide a more user-friendly interface for setting parameters and options. Block masks are particularly useful for complex blocks or subsystems whose internal workings are not necessary for the user to understand or interact with directly. You can create a mask for a custom block and reuse it as unique instances of the block.

Classes

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Simulink.MaskControl masks programmatically
Simulink.Mask.ConstraintsCreate mask parameter constraint
Simulink.Mask.PortConstraintCreate mask port constraints programmatically (Since R2022a)
Simulink.Mask.ParameterConditionCreate mask parameter conditions (Since R2022a)
Simulink.Mask.PortConstraintRuleCreate instance of Simulink.Mask.PortConstraintRule to define rules of port constraint (Since R2022a)
Simulink.Mask.PortIdentifierCreate port identifiers to identify ports of block in mask object (Since R2022a)
Simulink.Mask.CrossPortConstraintCreates cross-port constraint among ports of the same masked block (Since R2023a)
Simulink.Mask.CrossPortParameterConstraintCross port parameter constraint between ports and parameters of same masked block (Since R2025a)
Simulink.Mask.CrossPortParameterConstraintAssociationCross port parameter constraint association between mask parameters and ports (Since R2025a)
Simulink.Mask.SharedConstraintFileConstraints that needs to be saved in an XML file (Since R2023a)
Simulink.MaskParameterControl mask parameters programmatically
Simulink.Mask.EnumerationBaseDerive enumeration class to hold numeric values of any data type (Since R2021a)
Simulink.Mask.EnumerationTypeOptionsParse information from enumeration file derived from Simulink.IntEnumType and Simulink.Mask.EnumerationBase (Since R2021a)
Simulink.ConstraintManagerManage parameter and port constraints (Since R2024b)
Simulink.Mask.WorkspaceMask workspace object (Since R2025a)
Simulink.dialog.ControlCreate instance of dialog control
Simulink.dialog.ButtonCreate instance of button dialog control
Simulink.dialog.HyperlinkCreate instance of hyperlink dialog control
Simulink.dialog.ImageManage image dialog control
Simulink.dialog.TextManage text dialog control
Simulink.dialog.ListboxControlControl list box programmatically
Simulink.dialog.parameter.ControlCreate a parameter dialog control
Simulink.dialog.parameter.CustomTableCreate custom tables programmatically
Simulink.dialog.TreeControlControl Tree control programmatically
Simulink.dialog.LookupTableControlControl mask lookup tables programmatically (Since R2021b)
Simulink.dialog.LookupTableControl.TableControl table data for mask lookup table (Since R2021b)
Simulink.dialog.LookupTableControl.BreakpointsControl breakpoint data set for mask lookup table (Since R2021b)
Simulink.dialog.ContainerCreate instance of container dialog control
Simulink.dialog.GroupCreate instance of group dialog control
Simulink.dialog.PanelCreate instance of panel dialog control
Simulink.dialog.TabCreate instance of tab dialog control
Simulink.dialog.TabContainerCreate instance of tab container dialog control
Simulink.dialog.MaskPartReferenceCreate and save parameters and dialog controls and reuse them across multiple masked blocks (Since R2024b)

Topics

Introduction to Masking

Mask Editor

Masking Features

Mask Constraints

Graphical Icon Editor

Mask Callbacks

System Mask

Example Models

Featured Examples