#include "DRAWer_2_0.h" DRAWer_2_0::DRAWer_2_0(QWidget *parent) : QMainWindow(parent) { ui.setupUi(this); counter = 0; } DRAWer_2_0::~DRAWer_2_0() {} void DRAWer_2_0::on_pushButton_clicked() { ui.label->setText(QString::number(counter++)); }