This is a bunch of tips and techniques related to Oracle PL/SQL and Forms.
After reading the article about the input dialog box, someone asked me if it was possible to have a multi-lines input box.
So, this is the version 1.1 of the input dialog box

Here is the Java code and the JAR file
To use the single line input box use the following:
Set_Custom_Property( 'BL.BEAN', 1, 'SETTEXT', 'question text' ) ;
To use the multi lines input box use the following:
Set_Custom_Property( 'BL.BEAN', 1, 'SETTEXTMULTI', 'question text' ) ;