QT 出现为解析的外部符号
#include "dialog.h"
#include <QApplication>
#include<QDialog>
#include<QCheckBox>
#include<QLabel>
#include<QPushButton>
#include<QLineEdit>
#include<QHBoxLayout>
#include<QVBoxLayout>
class FindDialog:public QDialog
{
Q_OBJECT
public:
FindDialog(QWidget *parent=0);
~FindDialog();
signals:
void findNext(const QString &str,Qt::CaseSensitivity cs);
void findPrevious(const QString &str,Qt::CaseSensitivity cs);
private slots:
void findClicked();
void enableFindButton(const QString &text);
private:
QLabel *label;
QLineEdit *lineEdit;
QCheckBox *caseCheckBox;
QCheckBox *backwardCheckBox;
QPushButton *findButton;
QPushButton *closeButton;
};
FindDialog::FindDialog(QWidget *parent):QDialog(parent)
{
label=new QLabel(tr("Find &what:"));
lineEdit=new QLineEdit;
label->setBuddy(lineEdit);
caseCheckBox=new QCheckBox(tr("Match &case"));
backwardCheckBox=new QCheckBox(tr("Search &backford"));
findButton=new QPushButton(tr("&Find"));
findButton->setDefault(true);
findButton->setEnabled(false);
closeButton=new QPushButton(tr("Close"));
connect(lineEdit,SIGNAL(textChanged(const QString&)),this,SLOT(enableFindButton(QString&)));
connect(findButton,SIGNAL(clicked()),this,SLOT(findClicked()));
connect(closeButton,SIGNAL(clicked()),this,SLOT(close()));
QHBoxLayout *topLeftLayout=new QHBoxLayout;
topLeftLayout->addWidget(label);
topLeftLayout->addWidget(lineEdit);
QVBoxLayout *leftLayout=new QVBoxLayout;
leftLayout->addLayout(topLeftLayout);
leftLayout->addWidget(closeButton);
leftLayout->addWidget(backwardCheckBox);
QVBoxLayout *rightLayout=new QVBoxLayout;
rightLayout->addWidget(findButton);
rightLayout->addWidget(closeButton);
rightLayout->addStretch();
QHBoxLayout *mainLayout=new QHBoxLayout;
mainLayout->addLayout(leftLayout);
mainLayout->addLayout(rightLayout);
setLayout(mainLayout);
setWindowTitle(tr("Find"));
setFixedHeight(sizeHint().height());
}
FindDialog::~FindDialog(){}
void FindDialog::findClicked()
{
QString text=lineEdit->text();
Qt::CaseSensitivity cs=caseCheckBox->isChecked()?Qt::CaseInsensitive:Qt::CaseSensitive;
if(backwardCheckBox->isChecked())
{
emit findPrevious(text,cs);
}
else
{
emit findNext(text,cs);
}
}
void FindDialog::enableFindButton(const QString &text)
{
findButton->setEnabled(!text.isEmpty());
}
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
FindDialog *dialog=new FindDialog;
dialog->show();
return a.exec();
}
