a question about fileloading (jpg) from disk into Image1.Picture

rbuser

Hi,

I've putted a empty picture on a PageFooter.

On then OnPrint event of the report I want to do this:

if FileExists('logo.jpg') then
Image1.Picture.LoadFromFile('logo.jpg');

Now, ReportBuilder has never heard of FileExists, so this doesn't work. A
try...except blovk does also not work.

When the JPG is not there, the report crashes.

Is there another way to determine if the bitmap exists on the harddisk???

Can I put the FileHandlingRoutines file in a uses clause or something like
that??

TIA

Rob van der Leer

nardmoseley

To add the FileExists function to RAP, you need to code a custom
pass-through function and register with RAP. (see article below).

There is no support in RAP for try..finally or try...except. If you need
that code, then I suggest coding a custom pass-through function that can
perform the try..except/finally block.


--------------------------------------------------
Article: Extending RAP
---------------------------------------------------

There are two very simple and powerful techniques to extend the capabilities
of RAP infinitely. These are summarized below and covered in more detail in
the RAP.hlp online help. Demos and tutorials are installed to
RBuilder\Demos\RAP. The tutorial text is located in RAP.hlp.


1. RAP Pass-Through Functions

These are functions that appear in the Language tab of RAP's Code Toolbox.
These functions are written in Delphi and can be called from RAP. RAP's
pass-through function architecture enable's developers to add new built-in
functions to RAP's code toolbox.

2. Extend RAP's RTTI

RAP's Run-time Type information defines what classes and properties can be
accessed via RAP. By default the published properties of any class that is
registered with Delphi's RegisterClass procedure is recognized by RAP. In
addition many of the public properties and methods of ReportBuilder classes
are exposed.







--
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--
Nard Moseley
Digital Metaphors
http://www.digital-metaphors.com