This is a transfer channel which permits direct communication with the database. If the database is password protected, the example creates an InteractionHandler and opens the database connection using the ConnectWithCompletion method. Most word processing programs now finally provide the option of placing drawing objects, text frames and other objects within a text. For example, if only the C:\SubDir1 directory exists, then a call. The method provides the result in the form of a string. Once initialization is complete, the text frame is finally inserted in the text document using a call from insertTextContent. In other words, a variable exists from the moment that you include it in your code. LibreOffice control elements recognize different types of events that can be triggered in different situations. In all other instances (that is, if A is greater than or equal to 3), B is assigned the value 2. The program code for defining the hatch is very similar to the code for color gradients. The paragraphs can however be sequentially traversed with the help of the Enumeration object described in #Introduction to the API. This gradually returns the individual paragraphs of the text in a loop. Values for the Array fields can be stored like this: Accessing values in an array works like this: And example containing all steps that show real array usage: A variable in LibreOffice Basic has a limited life span and a limited scope from which it can be read and used in other program fragments. If it fails, a runtime error is produced, the error handler intercepts the error, and the function returns False. 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 view of the control element can then be determined with the assistance of the model and using the document controller. The symbol bars provided by LibreOffice show the common text properties such as font type, weight and size. In addition to an object for individual cells (com.sun.star.table.Cell service), LibreOffice also provides objects that represent cell ranges. The formatting options that are available depend on the type of drawing object. 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. The Map AppFont (ma) replaces the Twips unit to achieve better platform independence. The following example shows how a bookmark can be found within a text, and a text inserted at its position. 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. If you use ReDim with Preserve, you must use the same data type as specified in the original data field declaration. Such objects and services are also known as context-independent services. In LibreOffice Basic on the other hand, MkDir and RmDir can be used to create or delete levels of directories. The following example creates two objects that reference the first row and the first column of a sheet and stores the references in the FirstCol and FirstRow object variables. 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. Similarly, if you set this value to zero for a control element, the element is displayed on all the tab pages in a dialog. 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. This function is similar to the one that is used in text documents as described in #Text Documents. It passes through a complete document and formats the first word of every sentence in bold type. The SetAttr function permits the properties of a file to be changed. If not, it creates the database connection required using the GetConnection call. A text document can essentially contain four types of information: This section concentrates on the text and associated formatting options. The third section deals with presentations. VBA: The options provided in VBA for searching through directories specifically for files with the concealed, system file, archived, and volume name properties does not exist in LibreOffice Basic because the corresponding file system functions are not available on all operating systems. VBA: Compatibility between LibreOffice Basic and VBA relates to the LibreOffice Basic language as well as the runtime library. Text frames are considered to be TextContent objects, just like tables and graphs. In some cases the loop may only terminate when a condition is met within the loop. MsgBox displays a basic information box, which can have one or more buttons. Note: The basic object must provide the XEnumerationAccess interface, which contains only a createEnumeration method. LibreOffice Basic predefines several constants. The com.sun.star.text.Paragraph service grants access to the content of a paragraph. The fourth parameter of the loadComponentFromURL function is a PropertyValue data field. LibreOffice Basic is an interpreter language. You should instead use Basic object ThisComponent. If the Dir function finds no more entries, it returns an empty string. Graphic objects support two of the general formatting properties: Additional properties that are supported by graphic objects are: The following example shows how to insert a page into a graphics object. Most template types Draw templates are the exception have an automatic-update feature. You can navigate through the control elements in any dialog by pressing the Tab key. The following example creates a red rectangle with a transparency of 50 percent. This code works only if the macro is started from the document itself! 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. The lines can be stacked (com.sun.star.chart.StackableDiagram). If a driver permits access to a data source that does not support SQL, then it must independently convert the transferred SQL commands to the native access needed. 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. Styles deleted from the template are not removed from documents. In LibreOffice Basic, use the keyword Const to declare a constant. The type declaration symbol for an integer variable is %. It can be very difficult to locate errors of this kind in your code. You can also pass a parameter as a value if you do not want subsequent changes to the parameter to affect the value that is originally passed. Since LibreOffice is a platform-independent application, it uses URL notation (which is independent of any operating system), as defined in the Internet Standard RFC 1738 for file names. The XIndexContainer interface provides the insertByIndex and removeByIndex functions. The following example creates a table with the help of the createInstance method described previously. The following example first moves the TextCursor ten characters to the left and then three characters to the right: A TextCursor can highlight a complete area. This depends on the rotation of the chart. The forms created in this way provide all the functions of a full database front end without requiring independent programming work. A dialog editor is provided for creating dialogs, and this can be found in the LibreOffice Basic development environment. Through the API, for example, documents can be created, opened, modified and printed. The following example shows a procedure which terminates implementation when the ErrorOccured variable has the value True. 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. The "signature" of an empty array is that UBound() returns -1 and LBound() returns 0: Some API functions return an array containing elements (indexed from zero) or return an empty array. Currency variables are mostly intended for business calculations that yield unforeseeable rounding errors due to the use of floating point numbers. The CellAddress structure provides the following values: The cell contents in the target range are always overwritten by the moveRange method. There is no direct counterpart in LibreOffice Basic for the Characters, Sentences and Words lists provided in VBA. The cursor then inserts the text required at this point. Each paragraph is recorded in its own HTML element
for this purpose. The value is then changed to 20 and passed to TheValue, which is retained when the function is exited. LibreOffice provides hundreds of services. The formatting properties can be found in each object (Paragraph, TextCursor, and so on) and can be applied directly. In general, and for styles in particular, you can access information within a template in the same way you would access the same information in the associated document type. The Filtername property defines whether LibreOffice uses a LibreOffice Calc text filter to open files. 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. One can be found in the createUnoService function mentioned at the start of this chapter. The com.sun.star.awt.UnoControlEdit service forms the basis for text fields. value in the left-hand text field of the header from the "Default" template. Base Guides | LibreOffice Documentation - LibreOffice User Guides en / English documentation / Base Guides Base Guides Download PDF Buy a printed copy Guide Source Files Read in your browser Download PDF Buy a printed copy Download PDF Buy a printed copy Download PDF For detailed information check out our wiki page. About OpenOffice.org Basic and allows these to be created, saved, modified, and printed. This returns an auxiliary object, which in turn provides the XEnumeration interface with the hasMoreElements and nextElement methods. This is not, for example, possible with complex SQL commands with linked columns or accumulated values. In this case, the frame object of the window should contain an explicit name. To change the search so that InStr is case sensitive, add the parameter 0, as shown in the following example: Using the previous functions for editing strings, programmers can search for and replace one string in another string: The function searches through the transferred Search string in a loop by means of InStr in the original term Source. 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. An annotation field has the following properties. This code determines the object for the MyButton control element and then initializes the Ctl object variable with a reference to the element. WaitUntil takes a parameter of type Date, with a combined date and time value. LibreOffice, the best free and open source office suite. For more information about the LibreOffice API and the Software Development Kit, visit https://api.libreoffice.org. Since LibreOffice Basic is a procedural programming language, several linguistic constructs have had to be added to it which enable the use of UNO. For more information about the LibreOffice API and the Software Development Kit, visit https://api.libreoffice.org. 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. If the field proves to be a date/time field or an annotation, then the corresponding field type is displayed in an information box. Regardless of this, the original methods are also available (in our example, getPosition and setPosition). The store method of the com.sun.star.frame.XStorable interface is available for this purpose: This call functions provided that the document has already been assigned a memory space. The properties for formatting headers are: The properties for formatting footers are: The content of headers and footers in a spreadsheet is accessed through the following properties: If you do not need to distinguish between headers or footers for odd and even pages (the FooterIsShared property is False), then set the properties for headers and footers on odd pages. VBA: Unlike in VBA, the first column has the index 0 and not the index 1. For example, this object provides a start method that can start presentations. The function ensures that the variable is actually assigned the correct value regardless of the country-specific settings. Variables that are declared in a function or a procedure are called local variables: Local variables only remain valid as long as the function or the procedure is executing, and then are reset to zero. The definition will then be available to all routines in the module. This property provides the following options: The following example demonstrates the use of color gradients with the aid of the com.sun.star.awt.Gradient structure: This example creates a linear color gradient (Style = LINEAR). To prevent errors caused by an implicit declaration of variables, LibreOffice Basic provides a switch called: This must be listed in the first program line of each module and ensures that an error message is issued if one of the variables used is not declared. The second parameter specifies the number of columns to be inserted (in this example: one). Note: Apache OpenOffice offers a complete user interface for developing programs in Basic. A LibreOffice Basic program can contain dozens, hundreds, or even thousands of markers, which are names for variables, constants, functions . . When administering strings, LibreOffice Basic uses the set of Unicode characters. Text frame objects provide a range of properties with which the position and behavior of the frame can be influenced.
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