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  • Overview
  • Creating a duplicate copy from the print preview
  • Creating a duplicate copy by programming
  • Signing a duplicate copy
  • Using a duplicate copy
  • Colored bars
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Stored procedures
Overview
For legal reasons, it may be useful to keep an identical copy of a report (an invoice for example).
Furthermore, due to the large amount of data to process (statistical reports for example), some reports may take quite a long time to generate.
The Duplicate feature automatically proposes a solution to fix this problem.
The principle is straightforward: When editing a report (report created in the report editor or by programming), its identical copy can be generated and stored in a file in ".dpl" format.
This allows you to re-edit a duplicate copy of the report. The data is not processed again so it is protected against the modifications and this re-edit operation is performed immediately.
The creation of a duplicate copy can be performed:
  • from the print preview (WINDEV only).
  • by programming.
Versions 16 and later
You have the ability to sign a duplicate copy via a certificate:
  • from the print preview.
  • by programming.
New in version 16
You have the ability to sign a duplicate copy via a certificate:
  • from the print preview.
  • by programming.
You have the ability to sign a duplicate copy via a certificate:
  • from the print preview.
  • by programming.
Notes:
  • Printing a report with duplicate copies slows the print down. Indeed, the duration for creating the duplicate copy is included in the print duration. We advise you to run performances tests.
  • Printing a page of a report with duplicate copy triggers the creation of the duplicate copy for the entire report.
Creating a duplicate copy from the print preview
Creating a duplicate copy by programming
To create a duplicate copy by programming:
  1. Use iParameterDuplicate (associated with the iDplPrintout constant) to configure the options for creating the duplicate copies.
  2. Use iDestination and specify that the print must be performed on a printer. The duplicate copy will be created while the print is performed.
To stop printing the duplicate copies, use iParameterDuplicate (associated with the iDplNone constant).
Signing a duplicate copy
Versions 16 and later
The duplicate copies can be signed via a certificate. This signature ensures the integrity of the reports stored. The signature is included in the duplicate.
This signature automatically perform a timestamp. If may be required legally for some uses.
The signature standard used is PKCS7.
You have the ability to sign a duplicate copy via a certificate:
Versions 21 and later
Note: If the report includes a Signature control (linked to a certificate) or if iPrintSignature is used, the duplicate will be automatically signed during its creation. See Signature control for more details.
New in version 21
Note: If the report includes a Signature control (linked to a certificate) or if iPrintSignature is used, the duplicate will be automatically signed during its creation. See Signature control for more details.
Note: If the report includes a Signature control (linked to a certificate) or if iPrintSignature is used, the duplicate will be automatically signed during its creation. See Signature control for more details.
New in version 16
The duplicate copies can be signed via a certificate. This signature ensures the integrity of the reports stored. The signature is included in the duplicate.
This signature automatically perform a timestamp. If may be required legally for some uses.
The signature standard used is PKCS7.
You have the ability to sign a duplicate copy via a certificate:
Versions 21 and later
Note: If the report includes a Signature control (linked to a certificate) or if iPrintSignature is used, the duplicate will be automatically signed during its creation. See Signature control for more details.
New in version 21
Note: If the report includes a Signature control (linked to a certificate) or if iPrintSignature is used, the duplicate will be automatically signed during its creation. See Signature control for more details.
Note: If the report includes a Signature control (linked to a certificate) or if iPrintSignature is used, the duplicate will be automatically signed during its creation. See Signature control for more details.
The duplicate copies can be signed via a certificate. This signature ensures the integrity of the reports stored. The signature is included in the duplicate.
This signature automatically perform a timestamp. If may be required legally for some uses.
The signature standard used is PKCS7.
You have the ability to sign a duplicate copy via a certificate:
Versions 21 and later
Note: If the report includes a Signature control (linked to a certificate) or if iPrintSignature is used, the duplicate will be automatically signed during its creation. See Signature control for more details.
New in version 21
Note: If the report includes a Signature control (linked to a certificate) or if iPrintSignature is used, the duplicate will be automatically signed during its creation. See Signature control for more details.
Note: If the report includes a Signature control (linked to a certificate) or if iPrintSignature is used, the duplicate will be automatically signed during its creation. See Signature control for more details.
Using a duplicate copy
To use an existing duplicate copy, you can:
  • drop the ".dpl" file into the editor of WINDEV or WEBDEV: the duplicate copy is automatically opened in the print preview and it can be printed.
  • use iPrintDuplicate. This function is used to print the specified ".dpl" file. To display the duplicate copy in the print preview, all you have to do is use iPreview. For example:
    iPreview()
    iPrintDuplicate("C:\My Projects\My_Project\Exe\Dupli_20101021_112712.dpl")

Colored bars

When displaying a duplicate copy in the print preview, several bars may appear at the bottom of the preview to inform the user of the duplicate file used: centeralt=Colored bars
Minimum version required
  • Version 15
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