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共有52人参与查看参与人员 投票限制 - 本投票只允许注册日期大于 2010-11-08 会员投票
投票 辩论结束时间 2014-12-31 14:39 — 裁判： admin
#include <QtGui>
#include <mymainwindow.h>
mymainwindow::mymainwindow()
{
setWindowTitle("key choice");
setGeometry(100,100,610,520);
mymain=new QWidget(this);
mymain->resize(600,510);
b1=new QPushButton("1",mymain);
b1->setGeometry(10,30,100,40);
b1->setFont(QFont("Times",18,QFont::Bold));
b2=new QPushButton("2",mymain);
b2->setGeometry(10,80,100,40);
b2->setFont(QFont("Times",18,QFont::Bold));
b3=new QPushButton("3",mymain);
b3->setGeometry(10,130,100,40);
b3->setFont(QFont("Times",18,QFont::Bold));
b4=new QPushButton("4",mymain);
b4->setGeometry(10,180,100,40);
b4->setFont(QFont("Times",18,QFont::Bold));
b5=new QPushButton("5",mymain);
b5->setGeometry(10,230,100,40);
b5->setFont(QFont("Times",18,QFont::Bold));
b6=new QPushButton("6",mymain);
b6->setGeometry(10,280,100,40);
b6->setFont(QFont("Times",18,QFont::Bold));
b7=new QPushButton("7",mymain);
b7->setGeometry(10,330,100,40);
b7->setFont(QFont("Times",18,QFont::Bold));
b8=new QPushButton("8",mymain);
b8->setGeometry(10,380,100,40);
b8->setFont(QFont("Times",18,QFont::Bold));
b9=new QPushButton("9",mymain);
b9->setGeometry(10,430,100,40);
b9->setFont(QFont("Times",18,QFont::Bold));
tedit=new Q3MultiLineEdit(mymain);
tedit->setGeometry(120,0,500,500);
addChild(mymain);
connect(b1,SIGNAL(clicked()),this,SLOT(mydisplay1()));
connect(b2,SIGNAL(clicked()),this,SLOT(mydisplay2()));
connect(b3,SIGNAL(clicked()),this,SLOT(mydisplay3()));
connect(b4,SIGNAL(clicked()),this,SLOT(mydisplay4()));
connect(b5,SIGNAL(clicked()),this,SLOT(mydisplay5()));
connect(b6,SIGNAL(clicked()),this,SLOT(mydisplay6()));
connect(b7,SIGNAL(clicked()),this,SLOT(mydisplay7()));
connect(b8,SIGNAL(clicked()),this,SLOT(mydisplay8()));
connect(b9,SIGNAL(clicked()),this,SLOT(mydisplay9()));
}
void mymainwindow::mydisplay1()
{
tedit=new Q3MultiLineEdit(mymain);
tedit->setGeometry(120,0,500,500);
tedit->setReadOnly(true);
QFile myfile("e:/mymainwindow/1.tex");
myfile.open(IO_ReadOnly);
QTextStream mystream(&myfile);
QString mystring;
while(mystream.atEnd()==0)
{
mystring=mystream.readLine();
tedit->insertLine(mystring);
}
myfile.close();
}
void mymainwindow::mydisplay2()
{
tedit=new Q3MultiLineEdit(mymain);
tedit->setGeometry(120,0,500,500);
tedit->setText("This is the second choice of text.");
tedit->show();
}
void mymainwindow::mydisplay3()
{
tedit=new Q3MultiLineEdit(mymain);
tedit->setGeometry(120,0,500,500);
tedit->setText("This is the third choice of text.");
tedit->show();
}
void mymainwindow::mydisplay4()
{
tedit=new Q3MultiLineEdit(mymain);
tedit->setGeometry(120,0,500,500);
tedit->setText("This is the fourth choice of text.");
tedit->show();
}
void mymainwindow::mydisplay5()
{
tedit=new Q3MultiLineEdit(mymain);
tedit->setGeometry(120,0,500,500);
tedit->setText("This is the fifth choice of text.");
tedit->show();
}
void mymainwindow::mydisplay6()
{
tedit=new Q3MultiLineEdit(mymain);
tedit->setGeometry(120,0,500,500);
tedit->setText("This is the sixth choice of text.");
tedit->show();
}
void mymainwindow::mydisplay7()
{
tedit=new Q3MultiLineEdit(mymain);
tedit->setGeometry(120,0,500,500);
tedit->setText("This is the seventh choice of text.");
tedit->show();
}
void mymainwindow::mydisplay8()
{
tedit=new Q3MultiLineEdit(mymain);
tedit->setGeometry(120,0,500,500);
tedit->setText("This is the eighth choice of text.");
tedit->show();
}
void mymainwindow::mydisplay9()
{
tedit=new Q3MultiLineEdit(mymain);
tedit->setGeometry(120,0,500,500);
tedit->setText("This is the ninth choice of text.");
tedit->show();
}
按按钮1没反应
但是单独的程序#include <QApplication>
#include <QWidget>
#include <QFile>
#include <QTextStream>
#include <QString>
#include <Qt3Support/Q3MultiLineEdit>
class twelve1:public QWidget
{
public:
twelve1();
private:
Q3MultiLineEdit *medit;
};
twelve1::twelve1()
{
setGeometry(100,100,480,400);
medit=new Q3MultiLineEdit(this);
medit->setGeometry(10,10,460,380);
medit->setReadOnly(true);
QFile myfile("e:/mymainwindow/1.txt");//文件的路径
myfile.open(IO_ReadOnly);//设置为只读模式
QTextStream mystream(&myfile);//这个对象从文件中读取文本
QString mystring;
while(mystream.atEnd()==0)//从文件中读取一行，并将它输出到QMultiLineEdit对象。
{
mystring=mystream.readLine();//readline()每次只读一行，而read()读取整个流
medit->insertLine(mystring);
}
myfile.close();
}
void main(int argc,char **argv)
{
QApplication a(argc,argv);
twelve1 w;
w.show();
a.exec();
}
可以显示。txt中的内容，为什么跟按钮在一起了就没用
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请高手指教！
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