These determine the procedure LibreOffice uses when saving a document. The inner loop processes the paragraph portions in these paragraphs. The CompatibilityMode statement and function provide greater compatibility with VBA, by changing the operation of certain functions. You cannot modify the objects once they are in the group. The following return values are available in this instance: In the previous example, checking the return values could be as follows: In addition to the information text and the parameter for arranging the information box, MsgBox also permits a third parameter, which defines the text for the box title: If no box title is specified, the default is soffice. The first section describes the structure of drawings, including the basic elements that contain drawings. Purchase or download the latest LibreOffice Calc Guide, written by community experts. This reflects the content of a table or the result of a SQL-SELECT command. Such array is declared without dimension, but may later be filled by an API function or with a Redim statement: You cannot assign a value to an empty array, since it does not contain any elements. This help section explains the most common functions of LibreOffice Basic. 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. No action is performed to check if the status of the control element has actually changed. The getByIndex method returns a row object, which supports the com.sun.star.text.TextTableRow service. Note - VBA : Compatibility between OpenOffice.org Basic and VBA relates to the OpenOffice.org Basic language as well as the runtime library. More extensive navigation options, such as the possibility of modifying values, are therefore not included. The return value is assigned using simple assignment. Anyone who is already familiar with LibreOffice Basic programming can find additional information in the Developer's Guide on LibreOffice Basic and LibreOffice programming. To prevent this effect, the user can access the associated paragraph portions rather than the entire paragraph. XIndexAccess provides the getByIndex and getCount methods for calling the subordinate objects. getByIndex provides an object with a particular index. Example declaration of a string variable: Note: Note: You can access slides in the same way as a standard drawing is accessed through the DrawPages list of the document object. This allows Java to control and manipulate LibreOffice's text, drawing, presentation, spreadsheet, and database applications, and a lot more (e.g. Event-Driven Macros This section describes how to assign Basic programs to program events. The objective of developing this interface was to provide access to as many different data sources as possible. For more complex statements, you can cascade the If statement, for example: If the value of variable A equals zero, B is assigned the value 0. Strictly speaking, there are no table columns in LibreOffice. This call is only available provided that the data has not be re-written into the database using updateRow(). Similar to saving, documents are printed out directly by means of the document object. Forms are created using the Form Controls and the Form Design Toolbar directly within the document. Microsoft based its Windows product on the American National Standards Institute (ANSI) character set, which was gradually extended to include characters that are missing from the ASCII character set. The createInstance method, which is defined in the XMultiServiceFactory interface, is used in particular in the document objects. The False parameter in the previous function call specifies whether the area passed over with the cursor movement is highlighted. Double variables are suitable for precise calculations. The global name ThisComponent generally returns the same object as StarDesktop.CurrentComponent, with one significant advantage. Basic Guide - Computer Science and Engineering | Engineering To avoid such blind events, save the old control element value in a global variable, and then check to see if the value has changed when an event is executing. A single variable can take up to four bytes of memory. To edit the content of a text frame, the user uses the TextCursor, which has already been mentioned numerous times and is also available for text frames. A is assigned the string 2. An object in LibreOffice Basic provides a range of properties and methods which can be called by means of the object. With the value, LibreOffice Basic ignores the part of the exponent after the decimal point and interprets the expression as. The following call deletes the Filename file. The Chart object provides the property Area to format the background: The background of a chart covers its complete area, including the area under the title, subtitle and legend. The values required (in the example, those from the CustomerNumber field) returns the ResultSet using the getString method, whereby the parameter 1 determines that the call relates to the values of the first column. Two chart walls usually exist for 3D charts: one behind the plotted data and one as the left-hand or right-hand demarcation. The On Error Goto 0 call at the end of the code resets the status information of the error (the error code in the Err system variables) so that an error occurring at a later date can be clearly recognized. A function, just like a procedure, combines a block of programs to be executed into one logical unit. VBA: The flags used in VBA for querying the concealed, system file,archived and volume name file properties are not supported in LibreOffice Basic because these are Windows-specific and are not or are only partially available on other operating systems. You can copy or move subs, functions, modules and libraries from one file to another by using the Macro dialog. To check if the contents of a cell contains a number or a string, use the Type property: The Cell.Type property returns a value for the com.sun.star.table.CellContentType enumeration which identifies the contents type of a cell. The number of additional, deleted and modified characters for these expressions can be defined individually. LibreOffice Basic recognizes the following mouse events: Note: In LibreOffice Basic, this is irrelevant. com.sun.star.awt.UnoControlCurrencyField. This code inserts a drawing element in a page and then adds text to the top left corner of the drawing object using the TextVerticalAdjust and TextHorizontalAdjust properties. Templates are auxiliary documents. In its simplest form, the print call is: As in the case of the loadComponentFromURL method, the Dummy parameter is a PropertyValue data field through which LibreOffice can specify several options for printing. The expression Dim MyArray(3) declares an array that has four variables of the variant data type, namely MyArray(0), MyArray(1), MyArray(2), and MyArray(3). When using the ResultSet's UPDATEABLE and SCROLL_SENSITIVE properties, the scope of function of a ResultSet is comparable with a Dynaset type Recordset from ADO and DAO. Again an auxiliary structure, in this case com.sun.star.drawing.Hatch, is used to define the appearance of hatches. Although this provides considerable flexibility, it is best to restrict a variable to one variable type. This example removes the B2:C3 cell range from the sheet and then shifts the underlying cells up by two rows. This method deletes the range that is defined in the CellRangeAddress structure from the sheet. Using Library.Module variable qualification grants explicit access to module-scoped variables: Constants are values which may be used but not changed by the program. It supports the createTextCursor interface for creating an associated TextCursor object. The text field is then inserted in the document using the associated text object of the left-hand footer line. A simple ResultSet, provides the minimum scope of functions available. The procedure for defining page formats differs from other forms of formatting. VBA: Whereas VBA summarizes the error messages in a statistical object called Err, LibreOffice Basic provides the Err, Error$, and Erl variables. This procedure differs from VBA. If an information box contains several buttons, then a return value should be queried to determine which button has been pressed. The following example lists the names of data source queries can be established in a message box. VBA: LibreOffice Basic does not support the VBA Like comparison operator. Spreadsheet documents, like text documents, provide a function for searching and replacing. The Print method of the com.sun.star.view.Xprintable interface is provided for this purpose. The date is formatted here in accordance with the country-specific settings used on the system. For example, A1:C15 represents all the cells in rows 1 to 15 in columns A, B, and C. If the position of the cell range is only known at runtime, use the following code: The arguments of com.sun.star.sheet.XCellRangesAccess:getCellRangeByPosition are the position of the upper left cell of the range, followed by the position of the bottom right cell of the same range. The start index of a data field usually begins with the value 0. As already mentioned, the size and position of control elements can be determined using the associated shape object. These are available through the Rows and Columns properties of the spreadsheet object and support the com.sun.star.table.TableColumns and/or com.sun.star.table.TableRows services. The example creates a text frame, inserts this in the current document and opens a TextCursor for the text frame. A database connection is needed for access to a database. Bookmarks (Service com.sun.star.text.Bookmark) are TextContent objects. You can use these properties to trigger an event within an event handler. Most template types Draw templates are the exception have an automatic-update feature. A Const definition in the module header is available to the code in that module. In this case, the frame object of the window should contain an explicit name. To keep the previous values, you must define the variable as Static: Note: If the calls to SetModuleB and ShowVarB are independent, e.g. LibreOffice does not limit the number of pages in a drawing document. The more functions a ResultSet provides, the more complex its implementation usually is and therefore the slower the functions are. The following example uses the hasByName method to check if a page called MyPage exists. The following example creates a rectangle and tiles the Sky bitmap that is available in LibreOffice to fill the area of the rectangle: You can adjust the transparency of any fill that you apply. Set focus. LibreOffice then creates a list of the associated cell names for each of these tables. If you move a database table into a spreadsheet, LibreOffice creates a table area which can be updated at the click of the mouse if the original data has been modified. While XNameAccess permits access to the individual objects, XNameContainer takes on the insertion, modification and deletion of elements. Several TextCursor objects can even be opened for the same document and used in various positions, which are independent of one another. 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: The formatting options that are available depend on the type of drawing object. If you use ReDim with Preserve, you must use the same data type as specified in the original data field declaration. A procedure executes an action without providing an explicit value. Base includes additional functionality that allows you to create full data-driven applications. 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. The following properties are available in this context in the control elements model: Finally, the control element provides a setFocus method that ensures that the underlying control element receives the focus: A dialog in LibreOffice can have more than one tab page. Extensive examples are provided to help you quickly develop your own OpenOffice.org Basic programs. This function is not available in dialogs. LibreOffice Basic ensures that variable B is converted to a string during assignment to variable A. The dispose method at the end of the code releases the resources used by the dialog once the program ends. The question remains as to which objects or services if we are going to remain with UNO terminology support which properties, methods and interfaces and how these can be determined. Most charts in LibreOffice can also be displayed with 3D graphics. The selection ranges from simple text fields through list and combo boxes to various buttons. Here, you will find an overview of the most common of these interfaces. No programming knowledge is needed to use the corresponding functions. The headers and footers of a document form part of the page properties and are defined using the com.sun.star.style.PageProperties service. It passes through a complete document and formats the first word of every sentence in bold type. LibreOffice Basic Programming -- Resources for Learning English common, writer, calc, base, macro EssayFebruary 25, 2022, 3:17pm #1 H Everyone, Does anyone know of any books, pdf files, or courses where one can learn LibreOffice Basic and the ins and outs of macros in LibreOffice? LibreOffice programming with Java or C++ is a considerably more complex process than programming with LibreOffice Basic. A corresponding source text can be seen in the previous example. The following example defines a procedure that expects an integer value A and a string B as parameters. The example defines an object named PaperSize with the com.sun.star.awt.Size type. This guide provides an introduction to programming with LibreOffice Basic. There is no type declaration symbol for Boolean variables. This defines what LibreOffice searches for in a document. 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. In the second example, the sheet is accessed by its name and the getByName method. Visit Andrew Pitonyak's web page to get the latest PDF and ODT files of his book 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). The following example shows how graphics (named Sky) already contained in LibreOffice can be used as a background for a chart. The Assign Action dialog lists all the available Events. The cell type is not determined by the content that is saved in the cell, but rather the object property which was used for its entry. Again, the second parameter specifies the number of columns that you want to delete. Bar charts (com.sun.star.chart.BarDiagram) support two X-axes, two Y-axes and one Z-axis. The type declaration symbol for a long integer is &. In LibreOffice Basic, the formatting properties on the other hand are available directly, using the relevant objects (TextCursor, Paragraph, and so on). The following example also shows a correct declaration, but with negative data field limits: It declares an integer data field with 6 values that can be addressed using the indexes -10 to -5. Since the drivers are based on UNO components, other drivers can be developed and therefore open up new data sources. Whereas the responsible auxiliary object in VBA can be reached through the Find property of the Range object, in LibreOffice Basic it is created by the createSearchDescriptor or createReplaceDescriptor call of the document object. To ensure that the footer line is visible, the FooterIsOn property is set to True. This includes the distance of the paragraph from the edge of the page as well as line spacing. In general, Basic does not look inside a container, such as an Object, to see what names might be defined there. which provides LibreOffice with various options for opening and creating documents. If it does not have a URL or was opened in its read-only status, it is saved under a new URL. This allows to determine the position and size of the elements using the Position and Size properties. The division between visible program elements (View) and the data or documents behind them (Model) occurs at many places in LibreOffice API. The Expand parameter is a Boolean value which specifies whether the area passed over during navigation is to be highlighted. The following example searches through all tables of a text document and applies the right-align format to all cells with numerical values by means of the corresponding paragraph property. 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 may essentially consist of standard text, but can be placed at any position on a page and are not included in the text flow. To use a Universal Network Object in LibreOffice Basic, you will need a variable declaration for the associated object. In particular, if such a request is made by pressing the right mouse button on the control, the event will be fired twice: once for the popup menu request, and once for the real mouse event. Note: In this guide, a table-based document or spreadsheet document is the entire document, whereas a spreadsheet (or sheet for short) is a sheet (table) in the document. Automatic optimization continues until the row is assigned an absolute height through the Height property. The Diagram object provides the following properties to access the axes: The axis objects of a LibreOffice chart support the com.sun.star.chart.ChartAxis service. This basically covers the loadComponentFromURL method, which is responsible for creating, importing, and opening documents. stands for the decimal point symbol defined by the operating system in the country-specific settings. Special cell formatting is handled by the com.sun.star.table.CellProperties service. The pages of a drawing document are available through the DrawPages container. If you want to specify the type of a data, use a typed variable, not a constant. The objects are accessed as follows in text documents: The GetByIndex method returns the form with the index number 0. For Windows the recursion level is 5800. When saving date values, LibreOffice Basic uses an internal format that permits comparisons and mathematical operations on date and time values. 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2022-11-07