more variables

Adafruit_GFX.h

@@ -298,15 +298,17 @@ class Adafruit_GFX_Button {
   Adafruit_GFX *_gfx;     ///< gfx display pointer
   int16_t _x1;            ///< x Coordinate of top-left corner
   int16_t _y1;            ///< y Coordinate of top-left corner
-  uint16_t _w, _h;        ///< width and heaight of button
+  uint16_t _w;            ///< width of button
+  uint16_t _h;            ///< height of button
   uint8_t _textsize_x;    ///< width of text character in pixels
   uint8_t _textsize_y;    ///< height of text character in pixels
   uint16_t _outlinecolor; ///< button outline color
   uint16_t _fillcolor;    ///< button fill color
   uint16_t _textcolor;    ///< text color
   char _label[10];        ///< text label on button
 
-  bool currstate, laststate;
+  bool currstate; ///< current pressed state
+  bool laststate; ///< previous pressed state
 };
 
 /// A GFX 1-bit canvas context for graphics