Question

Please help me explain unexpected crash!!!
I have:

x.h

class x: QObject
   struct
    {
        struct
        {
            struct
            {
                int state;
                double curstring;
                QTimer timer_scroll;
                QTimer timer_done;
            }color;
            struct
            {
                int state;
                double curstring;
                QTimer timer_scroll;
                QTimer timer_done;
            }mono;
        }S2L_NOTIFY;

….etc

x.cpp

void x::draw(const int type, QString str, bool isNeedAnswer)
{
    if(type == 3)
    {
        //here is crash!
        if(bitmap.S2L_NOTIFY.mono.state == 3 &&  bitmap.S2L_NOTIFY.color.state == 3)
        {

if((bitmap.S2L_NOTIFY.mono.state == 3)) -< not crash here

if((bitmap.S2L_NOTIFY.color.state == 3)) -< not crash here

Please tell me where am i wrong or compilator wrong?

Answer 1

The problem is that you have x in your condition, but the function x::rndfunc() is a member function of class x… not a variable. It should be:

// "this" refers to the current instance of class x
if((this->y.z.f.nmb2 == NOTOK) && (this->y.z.f.nmb1 == NOTOK))

or simply:

// but the "this" isn't actually necessary
if((y.z.f.nmb2 == NOTOK) && (y.z.f.nmb1 == NOTOK))

(as you wrote).

EDIT: Okay, so there was a typo in the original question, so the above is no longer relevant. The new answer is:

f does not have a member variable nmb1, only nmb2.

EDIT #2: More typos. My new answer:

What you’re trying to do looks really messy. Don’t do it.