FR VCL 4 Pro Load Image from Stream

PaulM · April 2013

HI,
Have searched the forum(s) for code and the documentation that shows how to do this. Nothing dound in the pdf documentation. On the forums there have been no replies to questions asking how to do this. There a a few replies that show loadfromfile as a solution, which does not answer the original question > .

1. Using the Picture component OnBerforePrint Event
a.Loading from file I can do OK.
b. Loading from a stream is a problem.

Using the code completion I can see the LoadFromFile and LoadFromStream functions.
LoadFromFile Works easily as I can give it a string and it just works.
LoadFromStream is a problem as I don't know where or how to place the Stream variable so it is accessable to the script code.

Is it possible to LoadFromStream from a TfrxPictureView OnBeforePrint Event?

For anyone looking for some form of loadfromstream for Pictures the following code works, although not event driven.

.....
Var
   S: TFileStream;
   PV: TfrxComponent;
begin
 PV := frxReport.FindObject('Picture1');
 if Assigned (PV)
   then
     begin
       S := TFileStream.Create('C:\Dev\Graphics\Reports\Reports_White.png',fmOpenRead);
       try
         TfrxPictureView (PV).LoadPictureFromStream(S,true);
         frxReport.ShowReport(True);
       finally
         s. Free;
       end;
     end;
end;

Peta · April 2013

Hello,

I don't know if fastscript can handle this but you can create your custom function (see "custom components development").

procedure LoadPictureFromStream(AComponentName, AStreamName: String);
Var
Â Â PV: TfrxComponent;
begin
Â Â PV := frxReport.FindObject(AComponentName);
Â Â if (PV is TfrxPictureView) then
Â Â begin
Â Â Â Â if AStreamName = 'One' then
Â Â Â Â Â Â TfrxPictureView(PV).LoadPictureFromStream(StreamOne, true);
Â Â end;
end;

Best Regards,
Cristian Peta

foodmore · August 2013

maybe a professional third-party software can help you load images. here are code samples on how to load image from file and load image from url. check to see if you can find some useful tutorial.
and you can also learn how to create image from stream and byte arry. hope it is helpful to you.

FR VCL 4 Pro Load Image from Stream

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