For CPOL, you don't have to to release the source code with the software executable, but:
Quote:
You may distribute the Executable Files and Source Code only under the terms of this License, and You must include a copy of, or the Uniform Resource Identifier for, this License with every copy of the Executable Files or Source Code You distribute and ensure that anyone receiving such Executable Files and Source Code agrees that the terms of this License apply to such Executable Files and/or Source Code. You may not offer or impose any terms on the Work that alter or restrict the terms of this License or the recipients' exercise of the rights granted hereunder. You may not sublicense the Work. You must keep intact all notices that refer to this License and to the disclaimer of warranties. You may not distribute the Executable Files or Source Code with any technological measures that control access or use of the Work in a manner inconsistent with the terms of this License.
You must include the URL from which you got it.
For most apps, that just means a mention in the "About" box along the lines of
Some portions of this work are used under the terms of the Code Project Open Licence:
https://www.codeproject.com/info/cpol10.aspx
Such portions are used with thanks to the original authors:
Instance Storage - A Simple Way to Share Configuration Data among Applications:
https://www.codeproject.com/Articles/1203924/Instance-Storage-A-Simple-Way-to-Share-Configurati
Colouring DataGridView Cells According to their Content in WinForms:
https://www.codeproject.com/Tips/1240904/Colouring-DataGridView-Cells-According-to-their-Co
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