Turorial 4 Scroll Wheel: problem with textbuffer & TEXT_SIZE (V4.20.0)

[FMuel.3]

Hi everyone

I am new to toughgfx and need a scroll wheel for our new project. So I started with the tutorial 4. I think I followed every step, but when I copy the code, I get an error. The problem seems to be the textBuffer and TEXT_SIZE (Unicode::itoa(no, textBuffer, TEXT_SIZE, 10);). I get the message that they are not defined.

As far as I know the tutorial should have all the steps and all the code needed.

Any Idea what I'm missing?

Thank you!

#ifndef MENUELEMENT_HPP
#define MENUELEMENT_HPP
 
#include <gui_generated/containers/MenuElementBase.hpp>
#include <BitmapDatabase.hpp>
 
class MenuElement : public MenuElementBase
{
public:
    MenuElement();
    virtual ~MenuElement() {}
 
    virtual void initialize();
 
 
    void setNumber(int no)
    {
        Unicode::itoa(no, textBuffer, TEXT_SIZE, 10);
        switch (no % 7)
        {
        case 0:
            icon.setBitmap(Bitmap(BITMAP_ICON00_ID));
            break;
        case 1:
            icon.setBitmap(Bitmap(BITMAP_ICON01_ID));
            break;
        case 2:
            icon.setBitmap(Bitmap(BITMAP_ICON02_ID));
            break;
        case 3:
            icon.setBitmap(Bitmap(BITMAP_ICON03_ID));
            break;
        case 4:
            icon.setBitmap(Bitmap(BITMAP_ICON04_ID));
            break;
        case 5:
            icon.setBitmap(Bitmap(BITMAP_ICON05_ID));
            break;
        case 6:
            icon.setBitmap(Bitmap(BITMAP_ICON06_ID));
            break;
        }
    }
protected:
};
 
#endif // MENUELEMENT_HPP

#ifndef SCREEN1VIEW_HPP
#define SCREEN1VIEW_HPP
 
#include <gui_generated/screen1_screen/Screen1ViewBase.hpp>
#include <gui/screen1_screen/Screen1Presenter.hpp>
 
class Screen1View : public Screen1ViewBase
{
public:
    Screen1View();
    virtual ~Screen1View() {}
    virtual void setupScreen();
    virtual void tearDownScreen();
    virtual void scrollWheelUpdateItem(MenuElement& item, int16_t itemIndex)
    {
        item.setNumber(itemIndex);
    }
protected:
};
 
#endif // SCREEN1VIEW_HPP

[Osman SOYKURT · Accepted solution]

Hello FMuel.3,

It won't work because you didn't checked the checkbox "use wildcard buffer" on your text Area. Like this :

 

It's not explicitly said in the tutorial 4. Thanks for reporting this. We will do the modification for the next version of the documentation because it might be confusing indeed.

/Osman

[FMuel.3]

Thank you very much!

It also helped me with another problem that I had. I just missed to select "Use wildcard buffer". Now it works, thank you.