Why Qt creator expression evaluator shows 2 values for 1 variable?

[StudyQt1]

Hi, I would like to ask a question: As shown in the pic, why those highlighted variables (for example [26]) have 2 values?

When I use qDebug() to print out, it shows "-28", but for me the correct value is "228" or "0xe4". Thank you very much

[Christian Ehrlicher]

Because QtCreator (or better the debugger used by QtCreator) doesn't know if you want to interpret the value as signed or unsigned char - signed char(-90) == unsigned char(166) == 0xa6

[StudyQt1]

@Christian-Ehrlicher Thank you very much, you resolved my question perfectly