qt之旅-1纯手写Qt界面

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HEADERS +=     Find.h
QT += widgets

SOURCES +=     Find.cpp     main.cpp

//Find.h
#ifndef FIND_H
#define FIND_H
#include <QDialog>
class QCheckBox;
class QLabel;
class QLineEdit;
class QPushButton;
class FindDialog : public QDialog
{
    Q_OBJECT
public:
    FindDialog(QWidget *parent = NULL);
signals:
    void findNext(const QString &str,Qt::CaseSensitivity cs);
    void findPrevious(const QString &str,Qt::CaseSensitivity cs);
private slots:
    void findClicled();
    void enableFindButton(const QString &text);
private:
    QLabel* label;
    QLineEdit*  lineEdit;
    QCheckBox*  caseCheckBox;
    QCheckBox*  backwardCheckBox;
    QPushButton*    findButton;
    QPushButton*    closeButton;
};
#endif // FIND_H

//Find.cpp
#include <QtGui>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QLabel>
#include <QLineEdit>
#include <QPushButton>
#include <QCheckBox>
#include "Find.h"


FindDialog::FindDialog(QWidget *parent)
{
    label = new QLabel(tr("Find &what"));
    lineEdit = new QLineEdit;
    label->setBuddy(lineEdit);


    caseCheckBox = new QCheckBox(tr("Match &case"));
    backwardCheckBox = new QCheckBox(tr("Serach &backward"));


    findButton = new QPushButton(tr("&Find"));
    closeButton = new QPushButton(tr("&Close"));
    findButton->setDefault(true);
    findButton->setEnabled(false);


    connect(lineEdit,SIGNAL(textChanged(const QString&)),
            this,SLOT( enableFindButton(const 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(caseCheckBox);
    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());
}


void FindDialog::findClicled()
{
    QString text = lineEdit->text();
    Qt::CaseSensitivity cs = caseCheckBox->isChecked() ? Qt::CaseSensitive : Qt::CaseInsensitive;


    if (backwardCheckBox->isChecked())
    {
        emit(findPrevious(text,cs));
    }
    else
    {
        emit(findNext(text,cs));
    }
}
void FindDialog::enableFindButton(const QString& text)
{
}

//main.cpp
#include <QApplication>
#include "Find.h"


int main(int argc,char* argv[])
{
    QApplication app(argc,argv);
    FindDialog *dialog = new FindDialog;
    dialog->show();
    return app.exec();
}

#include <QApplication>
#include "Find.h"
int main(int argc,char* argv[])
{
    QApplication app(argc,argv); //app用来管理整个应用程序使用到的资源
    FindDialog *dialog = new FindDialog;
    dialog->show();
    return app.exec(); //将应用程序的控制权交给qt，程序会进入事件循环状态。
}

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qt之旅-1纯手写Qt界面

标签：使用   os   文件   io   代码   ar   line   管理   

原文地址：http://blog.csdn.net/ddupd/article/details/38292277