#include <QtCore/QCoreApplication>
#include <boost/bind.hpp>
#include <boost/function.hpp>
class button
{
public:
boost::function<void()> onClick;
boost::function<void(int,double )> onClick2;
};
class player
{
public:
void play(int i,double o){}
void stop(){}
};
button playButton,stopButton;
player thePlayer;
void connect()
{
//error C2298: 'return' : illegal operation on pointer to member function expression
playButton.onClick2 = boost::bind(&player::play,&thePlayer);
stopButton.onClick = boost::bind(&player::stop,&thePlayer);
}
int main(int argc,char *argv[])
{
QCoreApplication a(argc,argv);
connect();
return a.exec();
}
解决方法
boost::bind(&player::play,&thePlayer)
您需要为两个参数使用占位符：
boost::bind(&player::play,&thePlayer,_1,_2)
占位符允许您说“我只绑定某些参数;其他参数将在稍后提供.”
