我正在尝试在 Qt 中执行经典连接，我已经完成了大约一千次。但出于某种我不知道的原因，我现在不能:我收到错误
error: no matching function for call to 'gameView::connect(QComboBox*&, const char*, gameLogic*&, const char*)'
connect(_dropdown, SIGNAL(activated(int)), _model, SLOT(resize(int)));
^
我的代码如下: (gameview.h)
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QHBoxLayout>
#include <QGridLayout>
#include <QPushButton>
#include <QComboBox>
#include <QVector>
#include <QTime>
#include "gamelogic.h"
class gameView : public QWidget
{
Q_OBJECT
public:
...
QComboBox*_dropdown;
...
gameLogic* _model;
...
explicit gameView(QWidget *parent = 0);
~gameView();
};
#endif // MAINWINDOW_H
(游戏 View .cpp)
#include "gameview.h"
gameView::gameView(QWidget *parent) :
QWidget(parent)
{
_model = new gameLogic();
...
_dropdown = new QComboBox();
...
_dropdown->addItem("4");
_dropdown->addItem("6");
_dropdown->addItem("8");
connect(_dropdown, SIGNAL(activated(int)), _model, SLOT(resize(int))); //error here
...
}
(游戏逻辑.h)
#ifndef GAMELOGIC_H
#define GAMELOGIC_H
#include <QVector>
#include <QTimer>
class gameLogic
{
Q_OBJECT
public:
gameLogic();
...
public slots:
void resize(int newn);
};
#endif // GAMELOGIC_H
请帮忙!
最佳答案
您的gameLogic 类应该继承QObject，否则Qt 信号/槽机制将不起作用。尝试将 class gameLogic 更改为 class gameLogic : public QObject
关于c++ - Qt - 没有匹配的功能来调用连接，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37643691/