*不能出现在常量表达式中

Question

Could anyone explain me why does those errors exist during my compilation?

class ILI9341_due;

class LCD_ILI9341
{
private:
    ILI9341_due *tLCD;
    ILI9341_due &LCD = *tLCD;
public:
    LCD_ILI9341();
    ~LCD_ILI9341();

    void initDisplay();
    void drawMenu();


};

And the errors are:

'LCD_ILI9341::tLCD' cannot appear in a constant-expression
`*' cannot appear in a constant-expression
ISO C++ forbids initialization of member 'LCD'
making 'LCD' static

Thanks for any help :)

Answer 1

Your compiler cannot initialize ILI9341_due &LCD with in-class initialization. Initialize it in constructor's initialization list instead.