LibreOffice
LibreOffice 6.2 SDK API Reference
Public Member Functions | List of all members
XChartData Interface Referencepublished

manages the data of the chart. More...

import"XChartData.idl";

Inheritance diagram for XChartData:
XInterface ChartData XChartDataArray ChartDataArray ChartDataArray XComplexDescriptionAccess SheetCellRange SheetCellRanges CellRange TextTable XAnyDescriptionAccess SheetCellCursor Spreadsheet Paragraph

Public Member Functions

void addChartDataChangeEventListener ([in] com::sun::star::chart::XChartDataChangeEventListener aListener)
 allows a component supporting the XChartDataChangeEventListener interface to register as listener. More...
 
void removeChartDataChangeEventListener ([in] com::sun::star::chart::XChartDataChangeEventListener aListener)
 removes a previously registered listener. More...
 
double getNotANumber ()
 
boolean isNotANumber ([in] double nNumber)
 checks whether the value given is equal to the indicator value for a missing value. More...
 
- Public Member Functions inherited from XInterface
any queryInterface ([in] type aType)
 queries for a new interface to an existing UNO object. More...
 
void acquire ()
 increases the reference counter by one. More...
 
void release ()
 decreases the reference counter by one. More...
 

Detailed Description

manages the data of the chart.

See also
XChartDocument
Developers Guide
Charts - Data Access

Member Function Documentation

void addChartDataChangeEventListener ( [in] com::sun::star::chart::XChartDataChangeEventListener  aListener)

allows a component supporting the XChartDataChangeEventListener interface to register as listener.

The component will be notified with a ChartDataChangeEvent every time the chart's data changes.

Parameters
aListenerthe component that is to be added as listener
See also
XChartDataChangeEventListener
ChartDataChangeEvent
double getNotANumber ( )
Returns
the value which is to be used as an indicator for a missing value in the data.

In IEEE arithmetic format it is one of the NaN values, so there are no conflicts with existing numeric values.

boolean isNotANumber ( [in] double  nNumber)

checks whether the value given is equal to the indicator value for a missing value.

In IEEE arithmetic format it is one of the NaN values, so there are no conflicts with existing numeric values.

Always use this method to check, if a value is not a number. If you compare the value returned by XChartData::getNotANumber() to another double value using the = operator, you may not get the desired result!

Returns
TRUE if the number given is interpreted by the chart as a missing value.
Parameters
nNumberthe number that you want to check for validity.
void removeChartDataChangeEventListener ( [in] com::sun::star::chart::XChartDataChangeEventListener  aListener)

removes a previously registered listener.

Parameters
aListenerthe component that is to be removed

The documentation for this interface was generated from the following file: