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绑定信号与槽时记得绑定在俩都初始化后。
如：#include "ccmychardialog.h"public slots: void ccmyclose();emit myclose();#include "dialog.h"public slots: void ccmyclose(); myCCmyCharDialog = new CCmyCharDialog(tcpSocket); //绑定关闭信号与槽 connect(myCCmyCharDialog,SIGNAL(myclose()),this,SLOT(ccmyclose()));
不然绑定不了报：
QObject::connect: Cannot connect (null)::myclose() to Dialog::ccmyclose()
转载于:https://blog.51cto.com/haidragon/2093552