I want to publish a code for checksum calculation by modulus 10 which is used in the barcodes. I must say that this “mod10” is specifical so readf an article if you’re Read more...


I’ve been tinkering around with MetaBalls and have made a demo program. To use it just create a new project, save the form as MetaBallsForm and replace the form code with the code below.

Read more...

Is very common the needed to print raw text. Here is a complete class for do it. There is a requirement: to install the Generic/Only text printer of Windows.

Here an example:

varRead more...


Is very common the needed to print raw text. Here is a complete class for do it. There is a requirement: to install the Generic/Only text printer of Windows.

Here an example:

varRead more...


Solve 1:

I want to publish a code for checksum calculation by modulus 10 which is used in the barcodes. I must say that this “mod10” is specifical so readf an article if Read more...


Solve 1:

I want to publish a code for checksum calculation by modulus 10 which is used in the barcodes. I must say that this “mod10” is specifical so readf an article if Read more...


The security of any good cryptosystem relies on the key. No matter how large a key, there will be an imposing decrease in security if it is poorly used by the software. Keys should be measured Read more...


The security of any good cryptosystem relies on the key. No matter how large a key, there will be an imposing decrease in security if it is poorly used by the software. Keys should be measured Read more...


The solution is to handle the return value.
See the sample code below..

// this one does not work:
// execute procedure update_petrochemical_feedstocks (1800024, 2001);

// Read more...