SimpleLabelExpression Class

  • SimpleLabelExpression
  • class Esri::ArcGISRuntime::SimpleLabelExpression

    An expression script using the Simple REST language. More...

    Header: #include <SimpleLabelExpression.h>
    Since: Esri::ArcGISRuntime 100.11
    Inherits: Esri::ArcGISRuntime::LabelExpression

    Public Functions

    SimpleLabelExpression(QObject *parent = nullptr)
    SimpleLabelExpression(const QString &simpleExpression, QObject *parent = nullptr)
    virtual ~SimpleLabelExpression() override

    Detailed Description

    The label Simple expression expects to hold a legal, Simple script and to be read and evaluated by a Simple expression interpreter. An example expression that combines text with a field value is

    "State: " CONCAT [State_Name]

    Note that quotes are needed around the literal text. See for full documentation on the <b>labelExpression</b> syntax and functions.

    Note: If the expression attempts to use attributes which don't exist then no label will be produced. This is distinct from the attribute existing but having a null or empty value, which can form part of the produced text label.

    Member Function Documentation

    [explicit] SimpleLabelExpression::SimpleLabelExpression(QObject *parent = nullptr)

    Creates a label Simple expression with an empty expression script.

    • parent - The optional parent QObject.

    An empty script is a legal Simple expression that will evaluate to an empty string.

    [explicit] SimpleLabelExpression::SimpleLabelExpression(const QString &simpleExpression, QObject *parent = nullptr)

    Creates a label Simple expression with a specific Simple script.

    • simpleExpression - The Simple expression script string.
    • parent - The optional parent QObject.

    The expression is expected to be a complete, self-contained Simple expression.

    [override virtual] SimpleLabelExpression::~SimpleLabelExpression()


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