 |
Details |
|
| A Short Example |
| The call VPE.Print(200, 100, 'Hello World!') places the text "Hello
World!" at the position (200, 100) on the current page. This means, the text is
positioned with an offset of 2cm from the left page border and 1cm from the top page
border. The Result:
 |
Details |
 |
VPE is database independent. This means, you don't feed
any SQL queries to VPE like with other report generators. Using VPE, you run your database
queries from your native programming language and supply the data as formatted strings
from your code to VPE. |
|
The basic text output methods of VPE are Print(), PrintBox(), Write() and
WriteBox(). Each method expects a string with the text to be printed and the output
coordinates in 0.1mm. The same applies to imported images, barcodes, lines, frames, etc. The
layout of documents, forms and reports is created dynamically during runtime by code,
which gives you full control. |
|
In order to simplify the programming task there are mechanisms
implemented into VPE, which we call "Dynamic Positioning". The Dynamic
Positioning helps you to create quickly accurate layouts using special commands. You can compute
the width and height of text and images before inserting them into documents and
you can position new objects (like text, lines, images, etc.) referring to the
coordinates and dimensions of the past inserted objects. |
As a result, you gain the following benefits |
|
You create database queries with your native programming language,
instead of getting into the complex query-building mechanisms of a report generator. |
|
VPE allows true Multi-Tier application
development
In Multi-Tier applications you have an existing set of
encapsulated database views, which are separated from the presentation (e.g. the
presentation in the Graphical User Interface). This technique allows the re-use of views
in different modules and increases the productivity by many times. Using VPE, you can
re-use the views by 100% for printing! Within standard report generators, you define every
query a second time, and as a result you maintain the same queries in two different
places. |
|
Use your native programming language for data formatting
and supply it to VPE. You don't need to familiarize with the complicated and strange data
formatting commands of a report generator. |
|
Good report generators have build-in a complete programming lanuage to
control data presentation, like if-then-else structures, numeric computations for sums,
totals, etc. and string manipulation functions like concatenation, etc. You need
months to get into it. Using your native programming language and VPE, you don't
need to learn again a new programming paradigm. To get onto the paper what you
want, you simply need to know a handful of powerful layout functions provided
by VPE. VPE is easy to use and can be learned fast. |
|
You have total control over
the layout anytime during the document creation process. You are not tied down to static
layouts and banding technologies. Moreover you can move dynamically
anytime to any page and
insert new objects, like text, lines, images, etc. on any
position in the document. |
Back
|
