[SOLVED] std::sort on QList<QPushButton*> doesn't work

nologinma

My code is the following:

I have declare

@QList<QPushButton*> *local; @

and I use it in the following mode:

@std::sort(local->begin(), local->end(), pushButtonLessThan );@

and after I declare:

@bool MainWindow::pushButtonLessThan(QPushButton v1, QPushButton v2)
{
QRect myrect1;
QRect myrect2;

myrect1 = v1.geometry();
myrect2 = v2.geometry();

if (myrect1.left() < myrect2.left()) return true;
else return false;

}@

When I compile I have the following error:

@........\android\androidNDK\sources\cxx-stl\gnu-libstdc++\4.8\include/bits/stl_algo.h:5474:5: note: void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = QList<QPushButton*>::iterator; _Compare = bool (MainWindow::)(QPushButton, QPushButton)]
sort(_RandomAccessIterator __first, _RandomAccessIterator __last,
^
........\android\androidNDK\sources\cxx-stl\gnu-libstdc++\4.8\include/bits/stl_algo.h:5474:5: note: no known conversion for argument 3 from '<unresolved overloaded function type>' to 'bool (MainWindow::)(QPushButton, QPushButton)'@

Where is the problem ?

Please can you help me?

sierdzio

You need the method to be static, and you have to make it accept QPushButton pointers. Right now you are trying to sort a list of pointers using a sorting function that does not take in pointers.

nologinma

Thanks, now it work.