本例子涉及到了快捷键，信号，槽，读者自己看代码，我给出了框架。
find.h文件代码如下：
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#ifndef FIND_H
#define FIND_H
#include <QtGui>
#include "ui_find.h"
class
Find :
public
QDialog
{
Q_OBJECT
public
:
Find(QWidget *parent = 0, Qt::WFlags flags = 0);
~Find();
signals:
void
findNext1(
const
QString &str,Qt::CaseSensitivity cs);
void
findPrevious1(
const
QString &str,Qt::CaseSensitivity cs);
private
slots:
void
findClicked();
void
enableFindButton(
const
QString &str);
private
:
Ui::FindClass ui;
QLabel *label;
QLineEdit *textLine;
QCheckBox *matchBox;
QCheckBox *searchBox;
QPushButton *findButton;
QPushButton *quitButton;
};
#endif // FIND_H
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find.cpp代码如下：
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#include "find.h"
Find::Find(QWidget *parent, Qt::WFlags flags)
: QDialog(parent, flags)
{
ui.setupUi(
this
);
label=
new
QLabel(tr(
"Find &What:"
));
textLine=
new
QLineEdit();
label->setBuddy(textLine);
QHBoxLayout *hlayout=
new
QHBoxLayout();
hlayout->addWidget(label);
hlayout->addWidget(textLine);
findButton=
new
QPushButton(tr(
"&Find"
));
findButton->setEnabled(
false
);
findButton->setDefault(
true
);
quitButton=
new
QPushButton(tr(
"&Quit"
));
QVBoxLayout *vlayout=
new
QVBoxLayout();
vlayout->addWidget(findButton);
vlayout->addWidget(quitButton);
matchBox=
new
QCheckBox(tr(
"Match &Case"
));
searchBox=
new
QCheckBox(tr(
"Search &Backword"
));
QVBoxLayout *vlayout1=
new
QVBoxLayout();
vlayout1->addWidget(matchBox);
vlayout1->addWidget(searchBox);
QHBoxLayout *mainLayout=
new
QHBoxLayout();
mainLayout->addLayout(hlayout);
mainLayout->addLayout(vlayout);
mainLayout->addLayout(vlayout1);
setLayout(mainLayout);
setWindowTitle(tr(
"Find"
));
setFixedHeight(sizeHint().height());
connect(textLine,SIGNAL(textChanged(
const
QString &)),
this
,SLOT(enableFindButton(
const
QString&)));
connect(findButton,SIGNAL(clicked()),
this
,SLOT(findClicked()));
connect(quitButton,SIGNAL(clicked()),
this
,SLOT(close()));
}
Find::~Find()
{
}
// void Find::findNext1(const QString &str,Qt::CaseSensitivity cs){
// //do something here
// }
//
// void Find::findPrevious1(const QString &str,Qt::CaseSensitivity){
// //do something here
// }
void
Find::findClicked(){
QString text=textLine->text();
Qt::CaseSensitivity cs=matchBox->isChecked() ? Qt::CaseSensitive:Qt::CaseInsensitive;
if
(searchBox->isChecked()){
emit findPrevious1(text,cs);
}
else
{
emit findNext1(text,cs);
}
}
void
Find::enableFindButton(
const
QString &str){
findButton->setEnabled(!(str.isEmpty()));
}
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main.cpp
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#include "find.h"
#include <QtGui/QApplication>
int
main(
int
argc,
char
*argv[])
{
QApplication a(argc, argv);
Find w=
new
Find();
w.show();
return
a.exec();
}
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