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c++arduinolcd

How to create my own library in Arduino with LiquidCrystal?

I am trying to rewrite the LiquidCrystal library as MyLiquidCrystal and so far I have this error: cpp:25: undefined reference to `vtable for MyLiquidCrystal'. I found on the Internet that the library needs to have a destructor and that's what causes this error, but the official library doesn't have an explicit destructor. What can I do to solve this error? Here is my cpp code: https://pastebin.com/q8Ew8mUp Here is my h code: https://pastebin.com/Gq23Pixq And here is the simple code I am running in Arduino: 

#include <MyLiquidCrystal.h>


MyLiquidCrystal lcd(12, 11, 10, 5, 4, 3, 2);

void setup()
{
  lcd.begin(16,1);
  lcd.print("hello, world!");
}

void loop() {}
Solution

  • You did not define virtual size_t write(uint8_t);

    LyquidCrystal does.

    Refer to Undefined reference to vtable