Differences

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--- dcalcunix [2021/10/02 22:58] – [Extending gdcalc] admin
+++ dcalcunix [2021/10/14 16:57] – [Extending gdcalc] admin
@@ Line 45: / Line 45: @@
 ===== Extending gdcalc =====
-**gdcalc** is fully programmable (you've got the source!) and I've left loads of blank keys on the GUI for you to add in your favourites. If you add functions that you think would be interesting for the world at large, please let me have the diffs and I'll put them in. Fixes also welcome ... upgrade ideas tolerated.
+**gdcalc** is programmable (quite apart from the fact that you can get the source!) and I've left loads of blank keys on the GUI for you to add in your favourites. Just click on a blank button and add your own label and (algebraic) formula. You can reference x, y, z, t and l registers eg label="**HYP**" expr="sqrt(x^2+y^2)".
+Custom keys are indicated by the prefix "CUSTOM: " in the tooltip, visible if you hover the mouse over the button.
+To change or delete a custom key, right click on it.
 ===== Keyboard shortcuts =====
@@ Line 59: / Line 63: @@
 | x | clear x |
 | <down> | ROLL |
+| % | X percent of Y |
+| ESC | INV |
 | <enter>, <up> | enter |
 | <bsp> | backspace |
@@ Line 161: / Line 167: @@
 ===== Copyright =====
-Copyright (C) 1997-2018 Bob Hepple
+Copyright (C) 1983-2021 Bob Hepple
 This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.