libreoffice basic programming guide pdf

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Example declaration of a Boolean variable: Date variables can contain date and time values. org BASIC Programming Guide This guide provides an introduction to programming with OpenOffice.org Basic. Note: It only continues with the saving process if this is the case. A dialog editor is provided for creating dialogs, and this can be found in the LibreOffice Basic development environment. The following code is an example of an error handling procedure: This procedure begins with the definition of an error handler, followed by the actual program code. These are: The code for saving a document can be extended by these options so that the document is only saved if the object has actually been modified and the file name is only queried if it is actually needed: The example first checks whether the relevant document has been modified since it was last saved. The view of the control element can then be determined with the assistance of the model and using the document controller. The replaceByName line changes the object behind ChangingStyle into NewStyle. Here are the central methods that the com.sun.star.text.TextCursor service provides for navigation: The text is divided into sentences on the basis of sentence symbols. In addition to the Yes and No states, a check box can have an in-between state if the corresponding Yes or No status has more than one meaning or is unclear. its spell checker, forms designer, and charting tools). Any number of documents can be opened in this way in LibreOffice Basic and then edited using the returned document objects. The TimeSerial function formats time details in the same way that the DateSerial function formats dates: Their parameters should be specified in the sequence: hours, minutes, seconds. Subs and functions are always contained in modules. LibreOffice presentations are based on drawing documents. All properties form part of the associated model objects. This function is not available in dialogs. The Form Functions Toolbar is also used to switch between modes. Basic languages are designed to be easy to use. You must avoid having a marker of public scope with the same name as one of the modules of the library. List boxes (com.sun.star.awt.UnoControlListBox service) support the following properties: List boxes provide the following methods: The model object of the list boxes provides the following properties: Note: Here are a few correct and incorrect examples of numbers in exponential format: Note, that in the first and third incorrect examples that no error message is generated even though the variables return incorrect values. The structure of a chart, and therefore the list of services and interfaces supported by it, depends on the chart type. The color intensity of the start and end colors is 150 percent (StartIntensity and EndIntensity) which results in the colors seeming brighter than the values specified in the StartColor and EndColor properties. The two functions are handled identically. LibreOffice provides the queryKey and addNew methods so that you can access existing number formats as well as create your own number formats. In the second example, the sheet is accessed by its name and the getByName method. createUnoService creates an object which can be used universally. Correspondingly, two different access methods are defined there for charts. therefore ensures that the text is preceded by a tab character (Unicode-value 9) and that a hard line break (Unicode-value 13) is added after the text. The following example declares a data field that has six integer values and which can be addressed using the indexes 5 to 10: The indexes do not need to be positive values. They support the following property: The number of the current page can be inserted in a document using the com.sun.star.text.textfield.PageNumber text field. The following example inserts a paragraph after the 20th character of a text: The False parameter in the call of the insertControlCharacter method ensures that the area currently highlighted by the TextCursor remains after the insert operation. These include tables, drawings, text fields and directories. This example uses the insertByIndex method to insert a new column into the fourth column position in the sheet (index 3 - numbering starts at 0). In LibreOffice Basic, you can use object parameters to provide more information about an event to a procedure, for example: The structure and properties of the Event object depend on the type of event that triggers the procedure call. Note: The FileProperties array has two elements, one for each option used. The control codes are defined in the com.sun.star.text.ControlCharacter group of constants. Note: In LibreOffice Basic, this is accomplished with the On Error or Resume commands. When specifying a service name, it is only the module name which is of any importance because this must be also listed in the name. The first section deals with the anatomy of text documents and concentrates on how a LibreOffice Basic program can be used to take iterative steps through a LibreOffice document. The two empty strings in the command line stand for the user name and password. The createTextCursorByRange call then creates a Cursor, which is positioned at the anchor position of the bookmark. Apache OpenOffice offers a complete user interface for developing programs in Basic. In addition to the standard properties, the following database-specific properties must also be set in the form: The com.sun.star.sdb.CommandType enumeration covers the following values: The database fields are assigned to the individual control elements through this property: Another control element is provided for work with databases, the table control element. Documents are opened, imported and created using the method StarDesktop.loadComponentFromURL(URL, Frame, SearchFlags, FileProperties) The first parameter of loadComponentFromURL specifies the URL of the associated file. Direct formatting is used in particular with short documents because the formats can be assigned by the user with the mouse. Once the Dlg dialog object has been initialized, you can use the Execute method to display the dialog. The ShapeCollection is added to the page using the Group method and returns the actual Group object that can be edited like an individual Shape. This event is initiated by either a key-press or a mouse button. To prevent this effect, the user can access the associated paragraph portions rather than the entire paragraph. In addition to linking individual lines, in LibreOffice Basic you can use colons to divide one line into several sections, so that there is enough space for several expressions. The following example lists the names of data source queries can be established in a message box. As of LibreOffice Version 3.3, this status does not show in the GUI, nor is there any GUI way to re-enable the feature. Charts are not treated as independent documents in LibreOffice, but as objects that are embedded in an existing document. The values for selecting the buttons are: To set a button as the default button, add one of the following values to the parameter value from the list of button selections. Note: This represents the content of a complete database table or query. Working with LibreOffice Basic Changes made to the variables are retained when the procedure or function is exited: In this example, the value A that is defined in the Test function is passed as a parameter to the ChangeValue function. The following properties are provided for pie and donut charts with the Diagram object: LibreOffice has an integrated database interface (independent of any systems) called Star Database Connectivity (SDBC). The more functions a ResultSet provides, the more complex its implementation usually is and therefore the slower the functions are. Both the definition command, On Error, and the return command, Resume, are variants of the Goto construct. It supports the following properties: The name of the current chapter is available through a text field of the com.sun.star.text.textfield.Chapter type. The, a Boolean variable which specifies whether the, com.sun.star.text.textfield.CharacterCount. The When initiating event is also noteworthy for the following reasons: The properties for the Item Status Changed event are: LibreOffice Basic recognizes a range of control elements which can be divided into the following groups: A button performs an action when you click it. This code uses the String-property of the rectangle to insert the text and the CharWeight and CharFontName properties from the com.sun.star.style.CharacterProperties service to format the text font. VBA: LibreOffice Basic does not provide code completion. The service provides the following properties: The following example creates a rectangle and rotates it by 30 degrees using the RotateAngle property: The next example creates the same rectangle as in the previous example, but instead shears it through 30 degrees using the ShearAngle property. The Exit For instruction allows you to exit a For loop prematurely. The preceding call returns a page object that supports the com.sun.star.drawing.DrawPage service. Since other pages of the Developer's Guide . Example declarations of double variables: Currency variables differ from the other variable types by the way they handle values. Mathematical operators can be applied to all numbers types, whereas the + operator can also be used to concatenate strings. Finally the code sets the Label property of the control element to the New Label value. From a routine called by an event of a control, e.g. Note: Since control element forms within the documents are administered like a special drawing element, there is also a, This page was last edited 13:55:11, 2022-12-07 by, Please note that all contributions to The Document Foundation Wiki are considered to be released under the. The lengths are specified in hundredths of a millimeter. VBA: The CellProperties object in the LibreOffice API is comparable with the Interior object from VBA which also defines cell-specific properties. If you are familiar with an interface, then you can transfer your knowledge from one service to another. The procedure saves the individual file names in the AllFiles variable and then displays this in a message box. The previous example creates a bar chart. It is important to check the error number so that unanticipated errors can be detected. The execute method of the dialog returns the value 0, which is the same as when you click Cancel. In the hexadecimal system (base 16 system), a 2-digit number corresponds to precisely one byte. Whereas in VBA, the methods are applied to the corresponding Range object, in LibreOffice Basic they are applied to the associated Sheet object. This detail may be of interest in particular to Java- or C++ programmers, since in these languages, the interface is needed to request a method. This example deactivates the cmdNext button in the Dlg dialog with the aid of the model object from cmdNext. As a parameter, this takes the name of the property and returns a constant that provides information about the origin of the formatting. The method for accessing the shape objects of a control element also uses the corresponding drawing level of the document. The following example shows how graphics (named Sky) already contained in LibreOffice can be used as a background for a chart. Even though you can use these procedures in any module, it is best to limit their use to two modules. can define the digits after the decimal point in an expression: In the same way, zeros can be added in front of a number to achieve the desired length: A , represents the character that the operating system uses for a thousands separator, and the # stands for a digit or place that is only displayed if it is required by the input string. VBA: Other limit values sometimes apply for data field indexes in VBA. You can access the individual sheets of a spreadsheet document through the Sheets list. In other words, a variable exists from the moment that you include it in your code. You will find another description of dialogs in the Developer's Guide: Browse to and select the macro you want to assign. The parameter provides the option of adding additional buttons, defining the pre-assigned button, and adding an information symbol. What Happened To Duane Kuiper, Articles L