Did I found a bug in TfrxPreview / VCL / Delphi 2010 / FR 4.13.3

rakeknivenrakekniven
edited February 2013 in FastReport 4.0
I have 5 reports which working pretty nice.
They are using default preview or direct printing, depending on one variable.

Thats fine.

Now I would like to show a thumbnail preview for each type. So the user should easily see if he selected the right one.

I put one TfrxPreview on a form and set preview property of reports to it.
Works well.
As soon as I printed or prewieved (default preview) one and select another report in thumbnail preview I get access violation in Fast Report.

To make it more clear I stripped down my code into an small project.
See attachment.

Steps to reproduce:
1. start exe
2. press one of five preview buttons.
3. Press print button
4. Close preview
5. Select another preview button.

See access violation.

Sometimes access violation does not show up immediately. Just repeat given sequence.

Tested on Win7 64-bit and Win XP 32-bit

I also attached screenshot of access violation. Window looks like it is created from Fast Report itself. D2010 access violations look different.

Please see attached files.

Your help is really appreciated

Comments

  • gpigpi
    edited 3:18AM
    You should set all TfrxReport.Preview to nil before frxReport1.Preview := frxPreview1; and others

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