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# QDeclarativeError Class Reference

The QDeclarativeError class encapsulates a QML error. More...

     #include <QDeclarativeError>

This class was introduced in Qt 4.7.

- List of all members, including inherited members

## Public Functions

| QDeclarativeError ()
| QDeclarativeError ( const QDeclarativeError & other )
int | column () const
QString | description () const
bool | isValid () const
int | line () const
void | setColumn ( int column )
void | setDescription ( const QString & description )
void | setLine ( int line )
void | setUrl ( const QUrl & url )
QString | toString () const
QUrl | url () const
QDeclarativeError & | operator= ( const QDeclarativeError & other )

## Related Non-Members

QDebug | operator<< ( QDebug debug, const QDeclarativeError & error )

## Detailed Description

The QDeclarativeError class encapsulates a QML error.

QDeclarativeError includes a textual description of the error, as well as location information (the file, line, and column). The toString() method creates a single-line, human-readable string containing all of this information, for example:

     file:///home/user/test.qml:7:8: Invalid property assignment: double expected

You can use qDebug() or qWarning() to output errors to the console. This method will attempt to open the file indicated by the error and include additional contextual information.

     file:///home/user/test.qml:7:8: Invalid property assignment: double expected
             y: "hello"
                ^

See also QDeclarativeView::errors() and QDeclarativeComponent::errors().

## Member Function Documentation

### QDeclarativeError::QDeclarativeError ()

Creates an empty error object.

### QDeclarativeError::QDeclarativeError ( const QDeclarativeError & other )

Creates a copy of other.

### int QDeclarativeError::column () const

Returns the error column number.

See also setColumn().

### QString QDeclarativeError::description () const

Returns the error description.

See also setDescription().

### bool QDeclarativeError::isValid () const

Returns true if this error is valid, otherwise false.

### int QDeclarativeError::line () const

Returns the error line number.

See also setLine().

### void QDeclarativeError::setColumn ( int column )

Sets the error column number.

See also column().

### void QDeclarativeError::setDescription ( const QString & description )

Sets the error description.

See also description().

### void QDeclarativeError::setLine ( int line )

Sets the error line number.

See also line().

### void QDeclarativeError::setUrl ( const QUrl & url )

Sets the url for the file that caused this error.

See also url().

### QString QDeclarativeError::toString () const

Returns the error as a human readable string.

### QUrl QDeclarativeError::url () const

Returns the url for the file that caused this error.

See also setUrl().

### QDeclarativeError & QDeclarativeError::operator= ( const QDeclarativeError & other )

Assigns other to this error object.

## Related Non-Members

### QDebug operator<< ( QDebug debug, const QDeclarativeError & error )

Outputs a human readable version of error to debug.