Free Pascal / Lazarus: SQLite Database Tutorials: Reports with LazReport. Free Pascal Lazarus Project – Sync’ed with Lazarus SubVersion trunk every 15 minutes – alrieckert/lazarus. jesus LazReport, two additional export filters – TfrImageExportFilter, TfrH tutorials/stringgrid ยท LazReport, added stringgrid/variables tutorial from German.

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They are obtained by clicking Variable and then Category Otherthen double-click on the desired variable once you are familiar with the variables, you can also just type them. For our report, the following components were added: LazReport lets you link ttorial names to database fields or system values, in order to spare your end users from having to decipher cryptic field names.

Click OK to exit the editor, then adjust the title rectangle to the desired size. Now we will add several fields in the one rectangle. If you want to include the total number of pages with the page number on each page, you need to select Two-pass report which tells Lazreport to build the report twice, inserting total number of pages on the second run.

This can also be done manually by including the export filter unit name in the Uses clause of the unit where TfrReport is used. We’re assuming you already have your database set up as specified in SQLdb Tutorial0. LazReport is a group of components to add reporting capabilities to applications. You can specify a condition that determines when highlighting is applied.

ShowReport; end ; Note: You need to define your functions following the following template in the file FR. Highlighting is very useful for emphasizing data. Now let’s write the code required to load and view or edit our report.

If you wanted to lazreportt show the same picture, you’d just need to click Thtorial To the band, a rectangle was added with the text “GuitarClub”. This turns the picture into an object associated with the data field. Now we have to tell the report you need to treat all data as binary jpg image files.


SQLite Database Tutorial: Report generator

Choose a color for the background with the Bucket Fill button on the toolbar. This export filter tries to make a text representation of a graphical report by fitting the original graphical coordinates into a more coarse grid where each unit is of “UsedFont” pixels, depending on the value of UsedFont value, the exported output may more or less represent the layout of objects in graphical report.

Beside the properties inherited from its ancestor classes it defines some properties to customize the generated output. By default highlighter is a simple bold on white background. The master band will be repeated for each record in the data source.

To do this, select the variable and then the field. All ExportFilter clases share this event and the developer has to type-cast the sender argument to the desired export filter class, for example:. Calc p1 ; Par2: Press OK as needed to get back to the report designer. The LazReport components are not installed by default, they don’t appear on the toolbar right after the installation of Lazarus.

Each parameter is separated by commas and can be tutorizl expression, a constant, a variable, a field or data. If not, please do so.

Lazarus: Reports with LazReport

Though it is probably not needed much, LazReport allows you to define your own functions. Report generator Lazarus provides LazReporta report generatorfor adding reporting capabilities to applications. A filters package is installed in the same way as any lazreportt Lazarus Package; after restarting Lazarus, the filters usually appear as icons in the LazReport tab on the Component Palette.

For simplicity’s sake, we’ll use the Delphi approach. The report designer can be invoked at runtime.


You’ll need to create a new application with a main form Form1. Alternatively, as indicated before, you can write the resulting text directly. Because Hire date is a TDateTime field which internally is a floatI cheated by just using the float value of January 1st, which is In order to make changes in parameters, the developer can create an event handler for TfrReport. You can use all kinds of operators and functions in your calculations; see LazReport Documentation Documentation for an overview.

To calculate the total for values of each page added to the total on the previous page, follow these steps:. In the Report title band, add a rectangle. A function definition is nice, but we haven’t specified how these functions work.

Depending on the number of parameters, you have more or less edit areas. Please verify this and adjust article if needed: As mentioned, see LazReport Documentation Documentation for an overview of existing functions. Add a Test category, and a test1 variable the same way we did earlier with a space before the variable name:.

You can double-click later on the band if you want to change the data source. Note the extra set of square brackets around the calculation. An export filter is added to your application by simply dragging one of these icons to a form or data module where TfrReport component exists, this is automatically registered and remains ready to use.

TStream ; var GraphExt: The first line Name [Full name field] is obtained by writing Name and then, with the Variable button, entering the variable [Field Name]. LazReport is based on FreeReport 2. TObject ; lazrepor frReport1.

The familiar text editor appears.