add as much button support as we can to the RC71 (ROG Ally)

app/Extra.cs

@@ -90,6 +90,31 @@ namespace GHelper
         {
             InitializeComponent();
 
+            // Change text and hide irrelevant options on the ROG Ally,
+            // which is a bit of a special case piece of hardware.
+            if (AppConfig.ContainsModel("RC71"))
+            {
+                // The back paddles both seem to issue the same code;
+                // so we'll replace "M1/M2" with one field, for now.
+                // (Eventually, we should learn how Asus' software tells the difference.)
+                labelM1.Text = "Back Paddles";
+                labelM2.Visible = false;
+                comboM2.Visible = false;
+                textM2.Visible = false;
+
+                // Re-label M3 and M4 to match the front labels.
+                labelM3.Text = "Ctrl Center";
+                labelM4.Text = "ROG";
+
+                // Hide all of the FN options, as the Ally has no special keyboard FN key.
+                labelFNC.Visible = false;
+                comboFNC.Visible = false;
+                textFNC.Visible = false;
+                labelFNF4.Visible = false;
+                comboFNF4.Visible = false;
+                textFNF4.Visible = false;
+            }
+
             labelBindings.Text = Properties.Strings.KeyBindings;
             labelBacklightTitle.Text = Properties.Strings.LaptopBacklight;
             labelSettings.Text = Properties.Strings.Other;

app/Input/InputDispatcher.cs

@@ -427,6 +427,34 @@ namespace GHelper.Input
         }
 
         static void HandleEvent(int EventID)
+        {
+            // The ROG Ally uses different M-key codes.
+            // We'll special-case the translation of those.
+            if (AppConfig.ContainsModel("RC71"))
+            {
+                switch(EventID)
+                {
+
+                    // This is both the M1 and M2 keys.
+                    // There's a way to differentiate, apparently, but it isn't over USB or any other obvious protocol.
+                    case 165:
+                        KeyProcess("m1");
+                        return;
+                    // The Command Center ("play-looking") button below the select key.
+                    // We'll call this M3.
+                    case 166:
+                        KeyProcess("m3");
+                        return;
+                    // The M4/ROG key.
+                    case 56:
+                        KeyProcess("m4");
+                        return;
+
+                }
+            }
+            // All other devices seem to use the same HID key-codes,
+            // so we can process them all the same.
+            else
             {
                 switch (EventID)
                 {
@@ -468,6 +496,7 @@ namespace GHelper.Input
                         NativeMethods.TurnOffScreen(Program.settingsForm.Handle);
                         return;
                 }
+            }
 
             if (!OptimizationService.IsRunning())
                 HandleOptimizationEvent(EventID);