general/license_key
Apply your PDFlib license key using various methods to get rid of the demo stamp. The first methos is to apply your license key at runtime or (for Windows only) via a registry key. The second alternative method is to supply your license key in a license file and to inform PDFlib about the license file using set_parameter(), a system environment variable or (for Windows only) a registry key.
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* License key:
* Apply your PDFlib license key using various methods to get rid of the demo
* stamp
*
* The first methos is to apply your license key at runtime or (for Windows
* only) via a registry key. The second alternative method is to supply your
* license key in a license file and to inform PDFlib about the license file
* using set_parameter(), a system environment variable or (for Windows only)
* a registry key.
*
* Check for an existing license key by using set_parameter() with the
* "nodemostamp" option.
*
* Note that PDFlib, PDFlib+PDI, and PPS (PDFlib Personalization Server) are
* different products which require different license keys although they are
* delivered in a single package. PDFlib+PDI license keys will also be valid
* for PDFlib, but not vice versa, and PPS license keys will be valid for
* PDFlib+PDI and PDFlib. All license keys are platform-dependent, and can only
* be used on the platform for which they have been purchased.
*
* Required software: PDFlib/PDFlib+PDI/PPS 7
* Required data: valid license key for PDFlib, PDFlib+PDI, or PPS
*/
package com.pdflib.cookbook.pdflib.general;
import com.pdflib.pdflib;
import com.pdflib.PDFlibException;
public class license_key {
public static void main(String argv[]) {
String outfile = "license_key.pdf";
String title = "License Key";
pdflib p = null;
int tf;
final String text =
"You can apply your PDFlib license key using various methods to get "
+ "rid of the demo stamp. The first method is to apply your license "
+ "key at runtime or (for Windows only) via a registry key. The second "
+ "alternative method is to supply your license key "
+ "in a license file and to inform PDFlib about the license file using "
+ "set_parameter(), a system environment variable or (for Windows "
+ "only) a registry key. See the source code for a detailed description.";
try {
p = new pdflib();
/*
* --- First method: ---
* --- Apply the license key at runtime ---
*/
/*
* Provide the "license" parameter with your license key. This must
* be done immediately after having instantiated the PDFlib object
* with "new pdflib()" In the following function call replace "0"
* with your license key number.
*/
p.set_parameter("license", "0");
/*
* On Windows you can also enter the license key in the following
* registry key:
*
* HKEY_LOCAL_MACHINE\SOFTWARE\PDFlib\PDFlib\7.0.2
*
* with a version of 7.0.2 for example
*/
/*
* (If you are working with the Windows COM .NET installer you can
* enter a license key when you install the PDFlib product.)
*/
/*
* Using PDFlib+PDI functions if only the PDFlib license key has
* been installed: If you installed a valid PDFlib license key the
* PDI functionality will no longer be available for testing. When a
* license key for a product has already been installed, you can
* replace it with the dummy license string "0" (zero) to enable
* functionality of a higher product class for evaluation with:
*
* p.set_parameter("license", "0");
*
* This will enable the previously disabled functions, and
* re-activate the demo stamp across all pages. This also applies to
* PDFlib+PDI and PPS.
*/
/*
* --- Alternative second method: ---
* --- Supply the license key in a license file ---
*/
/*
* Enter the license key in a text file according to the following
* format(use the license file template "licensekeys.txt" which is
* contained in all PDFlib distributions):
*
* PDFlib license file 1.0 # Licensing information for PDFlib GmbH
* products PDFlib <version> <license key>
*
* "PDFlib" indicates PDFlib, PDFlib+PDI, and PPS, respectively.
* <version> is the PDFlib version number, e.g. 7.0.2, and <license
* key> is your license key. The license file may contain license
* keys for multiple PDFlib GmbH products on separate lines.
*/
/*
* After the license key has been manually added to the license
* file, now inform PDFlib about the license file
*
* p.set_parameter("licensefile", "path/to/licensekeys.txt");
*
* Alternatively, set the environment variable PDFLIBLICENSEFILE to
* point to your license file.
*
* On Windows open the system control panel and choose System,
* Advanced, Environment Variables, System variables.
*
* On Unix apply a command similar to the following:
* export PDFLIBLICENSEFILE=/path/to/licensekeys.txt
*/
/*
* On Windows you can also enter the name of the license file in the
* following registry key:
*
* HKLM\Software\PDFlib\PDFLIBLICENSEFILE
*/
/* This means we must check return values of load_font() etc. */
p.set_parameter("errorpolicy", "return");
/*
* Start the first document. By default, a demo stamp will be
* generated on all pages if no valid license key has been found.
*/
if (p.begin_document(outfile, "") == -1)
throw new Exception("Error: " + p.get_errmsg());
p.set_info("Creator", "PDFlib Cookbook");
p.set_info("Title", title + " $Revision: 1.10 $");
/* Start page */
p.begin_page_ext(0, 0, "width=a4.width height=a4.height");
final String optlist = "fontname=Helvetica-Bold fontsize=16 "
+ "encoding=unicode fillcolor={gray 0} leading=140%";
tf = p.add_textflow(-1, text, optlist);
if (tf == -1)
throw new Exception("Error: " + p.get_errmsg());
p.fit_textflow(tf, 50, 200, 400, 600, "");
p.end_page_ext("");
p.end_document("");
}
catch (PDFlibException e) {
System.err.println("PDFlib exception occurred:");
System.err.println("[" + e.get_errmsg() + "] " + e.get_apiname()
+ ": " + e.get_errmsg());
}
catch (Exception e) {
System.err.println(e.getMessage());
}
try {
/*
* By default a demo stamp will be created on all pages when no
* valid license key has been found. However, we can force an
* exception in those cases. This is recommended to be immediately
* informed about problems with missing or invalid license keys
* which will result in the unwanted demo stamp. Before beginning a
* new document, we set the "nodemostamp" parameter to "true". An
* exception will be thrown when no valid license key has been
* found.
*/
p.set_parameter("nodemostamp", "true");
/*
* Start a new document, generate it in memory to avoid creation of
* an invalid PDF document on disk.
*/
p.begin_document("", "");
p.begin_page_ext(0, 0, "width=a4.width height=a4.height");
p.end_page_ext("");
p.end_document("");
}
catch (PDFlibException e) {
System.err.print("PDFlib exception occurred:\n");
System.err.print("[" + e.get_errnum() + "] " + e.get_apiname()
+ ": " + e.get_errmsg() + "\n");
if (e.get_errnum() == 1994)
System.err
.println("This behaviour is expected since we did not\n"
+ "supply a valid license key and set the\n"
+ "\"nodemostamp\" parameter to \"true\".");
}
catch (Exception e) {
System.err.println(e.getMessage());
}
finally {
if (p != null) {
p.delete();
}
}
}
}