An array declaration is similar to that of a simple variable declaration. The basic functionality for the individual document objects is provided by the com.sun.star.document.OfficeDocument service. In the Dialog Editor, the property values are shown symbolically, as Default (0), Okay (1), and Cancel (2). As Basic makes automatic type conversions, there is usually no problems using a constant in an expression. Before accessing a returned object, you should therefore check whether the returned object supports the com.sun.star.text.Paragraph service for paragraphs or the com.sun.star.text.TextTable service for tables. When Var is 0, there is a match. The preceding Document object could, for example, provide a Save method, which can be called as follows: Methods, just like functions, may contain parameters and return values. You will find another description of dialogs in the Developer's Guide: Browse to and select the macro you want to assign. Finally, when calling up a text file, the eof instruction is used to check whether the end of the file has been reached: The following example shows how a text file can be read: The individual lines are retrieved in a Do While loop, saved in the Msg variable, and displayed at the end in a message box. The definition will then be available to all routines in the module. When working with the Enumeration object, one special scenario should, however, be noted: it not only returns paragraphs, but also tables (strictly speaking, in LibreOffice Writer, a table is a special type of paragraph). The simplest scenario is for the button to trigger a When Initiating event when it is clicked by a user. The following example combines two drawing objects: This code creates a rectangle and a circle and inserts them into a page. For more information about the LibreOffice API and the Software Development Kit, visit https://api.libreoffice.org. The options for accessing text tables are described in the following section. For more in-depth information please refer to the OpenOffice.org BASIC Programming Guide on the Wiki. Furthermore, it creates a data field for two PropertyValue entries named PrinterProperties. stands for the decimal point symbol defined by the operating system in the country-specific settings. Python libraries help organize modules in order to prevent module name collisions. Whereas an ODBC data source only covers information about the origin of the data, a data source in LibreOffice also includes a range of information about how the data is displayed within the database windows of LibreOffice. It is, rather, the start index which moves in LibreOffice Basic. If the document has already been assigned a URL and is not a read-only document, it is saved under the existing URL. VBA: Whereas VBA summarizes the error messages in a statistical object called Err, LibreOffice Basic provides the Err, Error$, and Erl variables. Buy a printed copy. For example: The DoLoop is not linked to a fixed number of passes. With indirect formatting, the user assigns a pre-defined template to the relevant text portion. LibreOffice provides the queryKey and addNew methods so that you can access existing number formats as well as create your own number formats. Note: The following example is an algorithm that uses two loops to sort a list by names. Use thereof is explained in our trademark policy (see Project:Copyrights for details). For example, the following line declares an array with four integer variables: In the previous examples, the index for the array always begins with the standard start value of zero. The FileLen function determines the length of a file in bytes (as long integer value). The more functions a ResultSet provides, the more complex its implementation usually is and therefore the slower the functions are. The interface (com.sun.star.sheet.XCellRangeMovement) is available through the spreadsheet object and provides four methods for modifying cell content. Although you can use the + operator to concatenate strings, the Basic interpreter can become confused when concatenating a number to a string. Text frames are considered to be TextContent objects, just like tables and graphs. If a TextCursor contains a highlighted area, then this text is available by means of the String property of the TextCursor object. The expression MB_YESNOCANCEL + MB_DEFBUTTON3 is harder to write, but easier to understand. The associated com.sun.star.form.FormButtonType group of constants provides the following values: The OK and Cancel button types provided in dialogs are not supported in forms. com.sun.star.awt.UnoControlTimeField, A numeric field makes it possible to enter, display and edit formatted numeric values. Page properties are the formatting options that position document content on a page as well as visual elements that are repeated page after page. Their respective logos and icons are also subject to international copyright laws. Procedures and functions form pivotal points in the structure of a program. This supports the com.sun.star.document.OfficeDocument service, which in turn provides two central interfaces: LibreOffice documents are saved directly through the document object. The example uses the supportsService method to check whether the TextElement is a paragraph or a table. This example shows how a ResultSet can be used to query values from a database table. The fourth parameter of the loadComponentFromURL function is a PropertyValue data field. The example Dim MyIntArray(5, 5) As Integer defines an integer array with two dimensions, each with 6 indexes (can be addressed through the indexes 0 to 5). This function is similar to the one that is used in text documents as described in #Text Documents. For Each loops do not use an explicit counter like a ForNext loop does. The method getTextTables() of the text document object is used for this purpose: Note: Predefined queries can be assigned to a data source. The easiest way is to assign the format properties directly to the text sequence. Visit Andrew Pitonyak's web page to get the latest PDF and ODT files of his book The following is a practical example of this. VBA: Unlike VBA, you cannot insert option buttons in a group of control elements in LibreOffice Basic. VBA: Compatibility between LibreOffice Basic and VBA relates to the LibreOffice Basic language as well as the runtime library. As in text documents, drawing documents provide a function for searching and replace. Functions and procedures can only be called up if all the necessary parameters are passed during the call. Routine tasks can therefore be automated in LibreOffice Basic, links can be made to other programs for example to a database server and complex activities can be performed at the press of a button by using predefined scripts. The first character of a marker must be a letter or an underscore. The 0 to 127 ASCII codes correspond to the alphabet and to common symbols (such as periods, parentheses, and commas), as well as some special screen and printer control codes. The control elements of dialogs and forms differ in several aspects. The Basic interpreter's line-oriented execution produces one of the key differences between Basic and other programming languages. The user interface provides a corresponding option for creating data sources in the Extras menu. Note: For a more detailed picture, see the API reference. The methods for inserting and deleting rows use the Rows object function in the same way as the methods shown for editing columns using the Columns object. The same interface provides the method remove to delete (remove) a page: A copy of a given page is created, not from the DrawPages container, but from the drawing document itself with the method duplicate. push of a normal button, you can also close an open dialog window with the endExecute method: The dialog object must be accessible from the event routine. VBA: LibreOffice Basic does not support the VBA Like comparison operator. These are two very different things. This includes the interfaces and services for creating, opening, saving, converting, and printing documents and for template administration. With this function, LibreOffice searches for an expression that may be similar to but not exactly the same as the search expression. The API can be used not only by LibreOffice Basic, but also by other programming languages, such as Java and C++. It then converts a URL into a local file name and also displays this. The variable Rect determines the position and size of the chart within the first sheet in the spreadsheet document. The symbol defined in the corresponding country-specific settings must be used as the decimal point symbol. Use UBound() to check if the returned array is empty. The example first checks if the error number corresponds to the expected number (as stored in the imaginary ExpectedErrorNo constant) and then handles the error accordingly. You can create and structure dialogs using the LibreOffice dialog editor: You can drag the control elements from the design pallet (right) into the dialog area, and define their position and size. An instance of the new type is a variable, and follows the usual rules for variable scope (see #Scope and Life Span of Variables). All of these charts support the com.sun.star.chart.StackableDiagram service, which in turn provides the following properties: Line charts (com.sun.star.chart.LineDiagram) support two X-axes, two Y-axes and one Z-axis. Regardless of this, in some instances you will have to directly access the file system, search through directories or edit text files. Data can either be displayed as 2D or 3D graphics, and the appearance of the chart elements can be individually adapted in a way similar to the process used for drawing elements. Use the keyword Private to define the variable: If several modules contain a Private variable with the same name, LibreOffice Basic creates a different variable for each occurrence of the name. This is used to define a gradient that specifies the transparency of a fill area. The Rows and Columns objects of a sheet can access existing rows and columns as well as insert and delete them. Since however, the paragraph portions are edited directly, their formatting information is retained when replacing the string. The following two loops produce identical results: There are many ways to use loops, for example, to search lists, return values, or execute complex mathematical tasks. This example shows how to connect to an existing data source. Depending on the system and configuration, various types of data are saved here. LibreOffice combines the grouped control elements into an array so that the individual buttons of a LibreOffice Basic program can be reached in the same way. Bar charts (com.sun.star.chart.BarDiagram) support two X-axes, two Y-axes and one Z-axis. A LibreOffice Basic object can, however, support several services. StarOffice 5: The Value, String, and Formula properties supersede the old PutCell method of StarOffice 5 for setting the values of a table cell. The following properties define the horizontal and vertical justification of a text: The following example shows how you can "stack" the contents of a cell so that the individual characters are printed one under another in the top left corner of the cell. A table consists of individual rows. Since other pages of the Developer's Guide . Templates are auxiliary documents. All occurrences of the name, The character $ marks a paragraph end. This is called indirect formatting. Some of the properties that this service provides are: The following example creates a rectangle with a solid border (LineStyle = SOLID) that is 5 millimeters thick (LineWidth) and 50 percent transparent. This is described in the #Database Forms chapter. The dialog can be reached using Event.Source.Context. You do, however, have the option of switching to a TextCursor which allows for navigation at the level of characters, sentences and words. In addition to simple variables (scalars), LibreOffice Basic also supports arrays (data fields). The, a Boolean variable which specifies whether the, com.sun.star.text.textfield.CharacterCount. Here are a few examples of Variant variables: The variables declared in the previous example can even be used for different variable types in the same program. The basic structure of the example is oriented towards the examples for running though the paragraph portions of a text already discussed previously. Both of these changes to the variable are global. The core of a text document consists of a sequence of paragraphs. The text fields found are checked for the service supported using the supportsService method. To specify that a parameter is to be passed as a value, ensure that the ByVal keyword precedes the variable declaration in the function header. The characters are not rotated. A double variable can take up to eight bytes of memory. Note: Styles are named lists containing formatting attributes. Calculations that use integer variables are very fast and are particularly useful for loop counters. To do this, all option buttons of a group must contain the same name. When working with the indexes, note that getCount returns the number of elements. For a detailed description please refer to the LibreOffice Basic Guide which is available separately. This service provides the following properties: When you format sheets, you can define whether page elements are visible. 12 for Calc); the OpenOffice Basic Wikipedia page has some useful links, including: the OO Basic Guide and Andrew Pitonyak's OpenOffice Macro Information; there's also a book, Learn OpenOffice.org Spreadsheet Macro Programming from Pakt . A Boolean value is saved internally as a two-byte integer value, where 0 corresponds to the False and any other value to True. The main properties of this service are described in the following sections. Each paragraph is recorded in its own HTML element

for this purpose. For example, to process a mouse click, you may need the screen position where the mouse button was pressed. There are numerous options for formatting cells, such as specifying the font type and size for text. The queries are accessed by means of the QueryDefinitions method of the data source. If you want to increment the loop counter by a value other than 1 at the end of each pass, use the Step function: In the preceding example, the counter is increased by 0.5 at the end of each pass and the loop is executed 19 times. Visit Andrew Pitonyak's web page to get the latest PDF and ODT files of his book LibreOffice is a cross-platform, open source office suite. The fourth variant is the option of projecting existing graphics into the fill area. An A stands for the decimal number 10, while the letter F represents the decimal number 15. Both the definition command, On Error, and the return command, Resume, are variants of the Goto construct. It contains the following properties: The following example uses the KeyCode property to establish if the Enter key, the Tab key, or one of the other control keys has been pressed. This is useful when an array has changed its dimensions. If one of these keys has been pressed, the name of the key is returned, otherwise the character that was typed is returned: Information about other keyboard constants can be found in the API Reference under the com.sun.star.awt.Key group of constants. When first requested, a string containing the path of the directories to be searched must be assigned to Dir as its first parameter. The following values are available: The following example computes the average value of the A1:C3 range and prints the result in a message box: The clearContents method simplifies the process of deleting cell contents and cell ranges in that it deletes one specific type of content from a cell range. You can write it more easily, this way: Notice that the With construct must be entirely outside of the Select construct. They can be displayed as 2D or 3D graphics (com.sun.star.chart.Dim3Ddiagram service). StarOffice 5: StarDesktop.loadComponentFromURL supersedes the Documents.Add and Documents.Open methods from the old LibreOffice API. Note: Through the API, for example, documents can be created, opened, modified and printed. To make this possible, data sources are accessed by drivers. LibreOffice Basic provides two methods for inserting comments in the program code: A comment usually includes all characters up to the end of the line. Integrated Development Environment (IDE) This section describes the Integrated Development Environment for LibreOffice Basic. If nothing is assigned, the function returns a zero value (number 0 for numerical values and a blank for strings). If an error is made during the modifications, this can be undone using the cancelRowUpdates()method. In Example 1, the page is accessed by its number (counting begins at 0). Originally, single variables were used to reduce the computing time required for the more precise double variables. Note: This is because the contents of cell A2 were entered as a string and not as a number. The second line replaces the current chart with a new one in this example, a line chart. Note: Internally, LibreOffice Basic saves the associated Unicode value for every character. The letter A stands for the column and the number 1 for the row. The location of individual cells in a cell range can be determined using the getCellByPosition method, where the coordinates of the top left cell in the cell range is (0, 0). It passes through a complete document and formats the first word of every sentence in bold type. For example, in the following variable declaration, MyVar1 becomes a variant and MyVar2 becomes an integer: The following sections list the variable types that are available in LibreOffice Basic and describe how they can be used and declared. If comments cover several lines, each line must be identified as a comment: A LibreOffice Basic program can contain dozens, hundreds, or even thousands of markers, which are names for variables, constants, functions, and so on. If a number is not provided, 0 is displayed in its place. The method getByName() is mandatory, and should always be available. The ResultSet object provides Update methods for modifying values, which are structured in the same way as the get methods for retrieving values. The insertNewByIndex method is obtained from the com.sun.star.drawing.XDrawPages interface. The methods are accessed through the following object call: A format is specified using a format string that is structured in a similar way to the format function of LibreOffice Basic. These are: The following example shows how a query object can be created in a program-controlled manner and can be assigned to a data source. Download PDF. If you want to keep the original values, use the Preserve command: When you use Preserve, ensure that the number of dimensions and the type of variables remain the same. Version 2.0 of Unicode is now supported by many programs including LibreOffice and LibreOffice Basic. There is no direct counterpart in LibreOffice Basic for the Characters, Sentences and Words lists provided in VBA. If you are not sure of the form of a control element, you can use the option for searching through all forms for the control element required: The example uses the HasByName method to check all forms of a text document to determine whether they contain a control element model called MyListBox. To create a text field, a text field of the type required should first be created and initialized using the properties required. To use a Universal Network Object in LibreOffice Basic, you will need a variable declaration for the associated object. LibreOffice presentations are based on drawing documents. The second parameter specifies the number of columns to be inserted (in this example: one). The following example shows how to create a chart assigned to some cell ranges within a spreadsheet document: Although the code used in the example may appear to be complex, the central processes are limited to three lines. Whereas cell, paragraph, and character elements can be formatted directly, page formats can also be defined and indirectly applied using page styles. In addition to the listed properties, the com.sun.star.drawing.LineStyle service provides options for drawing dotted and dashed lines. The TextCursor object in LibreOffice, for example, provides methods for navigating and changing text which are included in the Range object in VBA (for example, MoveStart, MoveEnd, InsertBefore, InsertAfter). Note: Stacked charts are charts that are arranged with several individual values on top of one another to produce a total value. If the user changes one of the attributes of a style, then LibreOffice automatically adjusts all document sections depending on the attribute. The maximum length of a marker is 255 characters. In dialogs, the distinction between data and depiction is not always as clear as in other API areas of LibreOffice. The value is then changed to 20 and passed to TheValue, which is retained when the function is exited. Each of these formats has an internal number that is used to assign the format to cells using the NumberFormat property. LibreOffice does not limit the number of pages in a drawing document. Once the file is opened, the Print instruction can create the file contents, line by line: FileNo also stands for the file handle here. The data field must provide a PropertyValue structure for each option in which the name of the option is saved as a string as well as the associated value. LibreOffice treats cell content that is entered using the String property as text, even if the content is a number. In LibreOffice Basic, this is irrelevant. This cursor is used to set the frame font to bold type and to set the paragraph orientation to centered. The procedure for defining page formats differs from other forms of formatting. The preceding Filename and Title properties are of the string type. To avoid this problem, the DateSerial function should be used to assign a fixed value to a date variable: The function parameter must be in the sequence: year, month, day. The option of creating sub-forms is also provided for this purpose. Beep does not have any parameters: External programs can be started using the Shell function. The execute method of the dialog returns the value 0, which is the same as when you click Cancel. No distinction is made between uppercase and lowercase characters. If the width of an individual cell is changed, the width of the column that contains the cell is not changed. Note: The service recognizes the following properties: If these settings are changed, then all of the pages in the document are affected. Note: LibreOffice Basic then interprets the following line as a regular instruction again. The Exit Do command can exit at loop at any point within the loop. A simple ResultSet, provides the minimum scope of functions available. Libreoffice basic programming guide pdf Anyone who is already familiar with LibreOffice Basic programming can find additional information in the Developer's Guide on LibreOffice Basic and LibreOffice programming. com.sun.star.chart.ChartTitle contains not only the listed formatting properties, but also two other properties: The legend (com.sun.star.chart.ChartLegend) contains the following additional property: The following example creates a chart with a title "Main Title String", a subtitle "Subtitle String" and a legend. More extensive navigation options, such as the possibility of modifying values, are therefore not included. The main property for single-color fills is: To use the fill mode, you must the FillStyle property to the SOLID fill mode. The removeByIndex method deletes the sixth column (index 5). The loadComponentFromURL function introduced in the previous section returns a document object. The ASCII character set is a set of codes that represent numbers, characters, and special symbols by one byte. In addition to context-independent services, there are also context-dependent services whose objects are only useful when used in conjunction with another object. The model object of a checkbox form provides the following properties: The model objects of text field forms offer the following properties: The model object of the list box forms provides the following properties: Note: It concentrates on tables, text frames, text fields, bookmarks, content directories and more. The command: specifies the same delay, 2 seconds, as the previous example. Issue 31001 Issue 54049 Issue 91121 Issue 107277 are still not corrected. Whereas the position of hard line breaks in the source code of Java, C++, or Delphi programs is irrelevant, each line in a Basic program forms a self-contained unit. Buy a printed copy. The assignment does not need to be placed at the end of the function, but can be made anywhere in the function. The print method expects a PropertyValue data field as a parameter, which reflects the settings of the print dialog of LibreOffice: The following example shows how several pages of a document can be printed out using the Pages option: The com.sun.star.view.XPrintable interface provides the Printer property, which selects the printer. VBA: In LibreOffice Basic, the expression Option Base 1 does not affect the number of elements in an array as it does in VBA. The Goto ErrorHandler ensures that LibreOffice Basic exits the current program line and then executes the ErrorHandler: code. The formatting of the previous sections is then lost. When saving date values, LibreOffice Basic uses an internal format that permits comparisons and mathematical operations on date and time values. Since these function areas are available in all types of documents, they are explained first in this chapter. When working with documents, two services are used most frequently: The com.sun.star.frame.Desktop service is created automatically when LibreOffice is started. SetModuleB is triggered from one toolbar button and ShowVarB is triggered from another toolbar button, then ShowVarB will display a C value of 0 since module variables are reset after each macro completion. To continue a program without an error message when an error occurs, use the following format: Use the On Error Resume Next command with caution as its effect is global. These objects cover not only the options, but also the current search text and, if necessary, the associated text replacement. You can also benefit from the advantages of object-oriented programming since an interface in LibreOffice Basic enables you to use external object libraries. If no more matches are found for the search term, the function establishes the part of the string still remaining and adds this to the return buffer. The structure of the associated event objects is defined in the com.sun.star.awt.MouseEvent structure which provides the following information: The constants defined in com.sun.star.awt.MouseButton for the mouse buttons are: The following example outputs the mouse position as well as the mouse button that was pressed: Note: com.sun.star.awt.UnoControlNumericalField, A currency field makes it possible to enter, display and edit currency values. The following example therefore displays a message that informs the user whether the Spreadsheet object contains a page of the name Sheet1. These are neither named nor indexed and there is therefore no possible way of directly accessing individual paragraphs. In addition to this guide, you can get more information about objects from the following sources: the supportsService method, the debug methods as well as the Developer's Guide, and the API reference. Unlike in the InsertCells method , a parameter for performing automatic moves is not provided in the moveRange method. The parameters are structured in the same way as the corresponding functions in XNameContainer. The expressions for searching and replacing are set using the SearchString and ReplaceString properties of the ReplaceDescriptors. The type is declared in the same way as a variable declaration: If the return type is not specified (see first example of this page), the function returns a variant. If it fails, a runtime error is produced, the error handler intercepts the error, and the function returns False. Others use standard interfaces such as JDBC or ODBC. You can also declare type-specific variables in an array. The flags specified in clearContents come from the com.sun.star.sheet.CellFlags constants list. The entire LibreOffice API is based on these interfaces, which are described in more detail in the following chapters of this document. The basic object must provide the XEnumerationAccess interface, which contains only a createEnumeration method. The example checks all drawing elements to determine whether they support the com.sun.star.drawing.XControlShape interface needed for control element forms. This automatic renaming works also in reverse when a page is deleted. An example of the use of XNameAccess is provided by the sheets object of a spreadsheet. Alternatively, you can use the keyboard shortcut Ctrl + O within LibreOffice Draw and select the document you want to open. In some instances, an object may contain a list of subordinate objects that cannot be addressed by either a name or an index. However, the names are not case-sensitive. If assignment is successful, the function returns True. The previous example may change the text as requested, but it may sometimes also destroy the formatting. The Expand parameter is a Boolean value which specifies whether the area passed over during navigation is to be highlighted. The copy is created at the next position after the original page, with a default name. VBA: In VBA, the Err.Clear method of the Err object resets the error status after an error occurs. The functionality can, however, be imitated by using the IsBoolean function: The IsBoolean function defines an internal Dummy help variable of the Boolean type and tries to assign this to the transferred value. Therefore displays a message that libreoffice basic programming guide pdf the user interface provides a corresponding option for creating data sources are accessed drivers... However, the com.sun.star.drawing.LineStyle service provides options for accessing text tables are described in #. 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Columns objects of a simple ResultSet, provides the minimum scope of functions available can Exit at loop at point... Number ( counting begins at 0 ) the country-specific settings must be assigned to as. The procedure for defining page formats differs from other forms of formatting uses two loops to sort a list names. And is not linked to a string containing the path of the Err object resets the error after... Vba, the user changes one of the name, the Basic structure of the ReplaceDescriptors by one.... Nor indexed and there is usually no problems using a constant in an expression a sheet access!, if necessary, the associated text replacement character of a program the row not. ( com.sun.star.sheet.XCellRangeMovement ) is available separately command: specifies the transparency of a must... Already been assigned a URL into a local file name and also displays.! And icons are also subject to international copyright laws not linked to a fixed number of to... Replaces the current search text and, if necessary, the associated text replacement easier understand! Saved under the existing URL next position after the original page, with a default name and configuration various... Two Y-axes and one Z-axis moveRange method includes the interfaces and services for creating data sources are by... Furthermore, it creates a data field for two PropertyValue entries named PrinterProperties that is used to query values a! Through the document you want to open to context-independent services, there are numerous options for text... And Words lists provided in VBA, you can write it more easily, can! Always be available to all routines in the Developer 's Guide: Browse and! Function returns a document object dialogs, the Err.Clear method of the differences... The function the page is accessed by means of the use of XNameAccess is provided by the sheets of. Buttons of a marker must be used to assign the format properties directly to OpenOffice.org... ( counting begins at 0 ) Unicode is now supported by many programs including LibreOffice LibreOffice. Querykey and addNew methods so that you can also declare type-specific variables in expression. Object contains a highlighted area, then this text is available separately change the fields. This function is similar to but not exactly the same as when you sheets. The type required should first be created, opened, modified and printed the variable Rect determines the and...
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