转载地址：http://zero66.blog.51cto.com/2729872/920758/
增加一个自定义的槽函数，用来改变QDlabel的内容.
改后的hello.h
#ifndef _HELLO_H_ #define _HELLO_H_ #include<QtGui/QtGui> #include<QDialog> class hello:public QDialog { Q_OBJECT public: hello(QWidget* =0); QLabel* label; public slots: void myslot(); }; #endif
改后的hello.cpp
#include"hello.h" #include<QtCore/QTextCodec> hello::hello(QWidget* parent):QDialog(parent) { QPushButton* closeBtn = new QPushButton(tr("关闭")); QPushButton* changeBtn = new QPushButton(tr("请点击一下测试")); label = new QLabel(tr("wait for test!")); label->setFont(QFont("ubuntu",35,QFont::Bold)); QVBoxLayout* dlgLayout= new QVBoxLayout; dlgLayout->addWidget(label); dlgLayout->addWidget(changeBtn); dlgLayout->addWidget(closeBtn); connect(closeBtn,SIGNAL(clicked()),this,SLOT(close())); connect(changeBtn,SIGNAL(clicked()),this,SLOT(myslot())); setLayout(dlgLayout); } void hello::myslot() { label->setText(tr("hello,qt!")); }
