Transparent PNG

rbuser

Hello

I want export a report to PNG image with some transparent areas. Is this
possible? TppImage has a Transparent property, I changed to True but
generated report (png image hasn´t transparency).

Is this the normal behaviour? In that case, can I modify the TppImage
content and set my report´s (image) Transparency?
May be there is some example about this ... ?

Thanks

Benitez

nicocizik

Hi Benitez,

Which version of ReportBuilder and Delphi are you using?

The PDF device does support image transparency by using the top left
pixel as the transparency color.

It does not currently support advanced single-pixel or alpha channel
transparency that PNG images are capable of.

rbuser

Thanks Nico, I am using 14.07.

I see Transparent property doesn´t help me but Can I do anything for force
output png image trnasparency?. For example, Can I change the bitmap canvas
for my proposal in some event, may be OnPrintingComplete or other?

I think

Lenny Miranda

nicocizik

Hi Lenny,

I apologize if I misunderstood your initial question. I see now that
you are exporting your entire report to a PNG file (or files) and would
like some transparent areas.

There is currently no way to include transparent areas of a report
exported to and image file. You would need to load the exported page
image into an image editor to define any transparency.

rbuser

OK. Thanks.