Notify user if Custom keymap not selected when keyboard config EDIT clicked.

Author: ejaquay

config.c

@@ -919,15 +919,17 @@ LRESULT CALLBACK InputConfig(HWND hDlg, UINT message, WPARAM wParam, LPARAM lPar
     case WM_COMMAND:
         TempConfig.KeyMap = (unsigned char)
         SendDlgItemMessage(hDlg,IDC_KBCONFIG,CB_GETCURSEL,0,0);
-
-// Considered a check here for custom keyboard selected but the layout shown in the pull-down
-// is not the actual config until apply is clicked. Check would make things more confusing.
-		if (LOWORD(wParam)==IDC_KEYMAPED) {
+        if (LOWORD(wParam)==IDC_KEYMAPED) {
+            // Notify user if custom keyboard if not selected but allow edit anyway.
+            if (CurrentConfig.KeyMap != 3) {
+                MessageBox(0, "The custom keyboard map is not currently applied. For edits "
+                               "to take effect select Custom mapping AND Apply when done.",
+                               "Notice", 0);
+            }
             DialogBox( EmuState.WindowInstance, (LPCTSTR) IDD_KEYMAPEDIT, hDlg,
                        (DLGPROC) KeyMapProc );
         }
-
-		break;
+        break;
     }
     return(0);
 }