SG Input Box

Based on an article by Michael Haephrati. There are several building blocks in programming that are available in most of the languages and make life easy. For example, the ability to pop up a message. In Win32 that would be MessageBox(). Another building block is Inputbox. InputBox() is a very handy command for prompting the user for an input. You can find it in VBA and Visual Basic. However, while Message Boxes can be easily displayed in any c++ program, there is no direct way for calling InputBox like command. For that reason I created SGInputBox(). I am providing this code as a Static library, and with no Resources, which I think is the most comfortable way to be used, and it can be used by Console Applications, plain Win32 applications or any other type of c++ application.
Further reading: https://www.codeproject.com/Articles/5100299/Adding-a-InputBox-to-any-cplusplus-program