HP 40gs HP 39gs_40gs_Mastering The Graphing Calculator_English_E_F2224-90010.p - Page 262
Example aplet #1 – Displaying info, Into this empty program, type the following code
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Example aplet #1 - Displaying info This example uses the SETVIEWS command to create a simple (and totally useless) aplet, which illustrates a few of the concepts useful in programming the hp 39gs or hp 40gs. We'll call it the 'Message' aplet and create it as a child of the Function aplet. Change into the APLET view, move the highlight to the Function aplet and it. This reset is not necessary but ensures that no settings are left over that may interfere. Now save it under the new name of 'Message' and then this new aplet. You will find that you are looking at the normal SYMB view but for the Message aplet instead of the Function aplet. The title appears at the top of the screen as usual. Press SHIFT PROGRAM to view the Program Catalog. Press to create a new program and call it .MSG.SV (see right, with part of the new program typed in). Into this empty program, type the following code, obtaining the quotes from the CHARS view. When you finish typing, just press SHIFT PROGRAM again to exit back to the Program Catalog. There is no need to save as this is done continuously as you type. Spend a moment to go through the code and ensure that you are clear in your own mind the menu it will create, the programs it will run, and the views it will enter after the running of each program. You will be told at a later stage in this example when to run this program and create the menu. 262
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