Qt之对话框

一个对话框程序

在VS2008下新建工程的时候得是有ui的Qt Application

不用Qt Designer就是麻烦，横或竖的BoxLayout写了N多。还是有些地方没怎么明白。

dialogapp2.h

 //dialogapp2.h#ifndef FINDDIALOG_H#define FINDDIALOG_H#include <QDialog>class QCheckBox;class QLabel;class QLineEdit;class QPushButton;class FindDialog : public QDialog{Q_OBJECTpublic:FindDialog(QWidget *parent = 0);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;};#endif

 

dialogapp2.cpp

//dialogapp2.cpp#include <QtGui>#include "dialogapp2.h"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 &backward"));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(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::findClicked(){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){findButton->setEnabled(!text.isEmpty());}

 

main.cpp

#include <QApplication>#include "dialogapp2.h"int main(int argc, char *argv[]){QApplication app(argc, argv);FindDialog *dialog = new FindDialog;dialog->show();return app.exec();}