Building a Custom Portable Program
15.Select OK to exit the dialog box. Then close this frame to return to the Program level of the application.
Saving Your Program
Even though the program's not complete, it's a good idea to save it periodically while you are creating it. Select File > Save to save the program in a file. Enter tutorial in the File Name
You have completed the Main Menu frame. These nodes display two options on the portable’s screen and allow the user to press <F3> or <F4>. The program checks to see which function key was pressed and passes control to either the
orframe.
Want a Break?
If you are ready for a break, you can stop here. You have not made changes that need to be saved, so you won’t lose any work if you exit PPG or turn off your computer now.
Creating and Setting Up the Collect Data Nodes
The Collect Data frame allows the user to scan bar codes and enter data through the keys of the portable. That data is temporarily stored in a register and then copied into a file, which can be uploaded later to a PC.
You'll set up
•Display a message on the portable’s screen telling the user that the portable is ready to accept data.
•Allow data input from the scanner (scanner) or the portable’s keys, specify how to handle each type of input, and name a register in which to store the data temporarily.
•Verify that the user input is valid and, if it is not, display an error mes- sage and sound a beep.
•Copy the data from the temporary register to a data file and redisplay the initial message asking for input.
In addition, you will create an option that will allow the user to return to the Main Menu by pressing a function key.
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