Diff: RA8875.h

Revision:

142:6e9bff59878a

Parent:

140:33ca352755a2

Child:

143:e872d65a710d

--- a/RA8875.h	Thu Dec 29 20:06:00 2016 +0000
+++ b/RA8875.h	Sun Mar 19 21:41:24 2017 +0000
@@ -545,6 +545,9 @@
     /// be independently drawn on and shown. Additionally, complex
     /// operations involving both layers are permitted.
     ///
+    /// @attention If the current display configuration does not support
+    ///     multiple layers, then layer 0 will be selected.
+    ///
     /// @code
     ///     //lcd.SetLayerMode(OnlyLayer0); // default is layer 0
     ///     lcd.rect(400,130, 475,155,Brown);
@@ -561,9 +564,9 @@
     ///
     /// @param[in] layer is 0 or 1 to select the layer for subsequent 
     ///     commands.
-    /// @returns success/failure code. See @ref RetCode_t.
-    ///
-    RetCode_t SelectDrawingLayer(uint16_t layer);
+    /// @returns the previous drawing layer; 0 or 1.
+    ///
+    virtual uint16_t SelectDrawingLayer(uint16_t layer);
  
     
     /// Get the currently active drawing layer.
@@ -585,7 +588,7 @@
     ///
     /// @returns the current drawing layer; 0 or 1.
     /// 
-    uint16_t GetDrawingLayer(void);
+    virtual uint16_t GetDrawingLayer(void);
  
     
     /// Set the Layer presentation mode.