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Code: Alles auswählen

#ifndef FINDDIALOG_H
#define FINDDIALOG_H
#include <QDialog>

class QCheckBox;
class QLabel;
class QLineEdit;
class QPushButton;

class FindDialog : public QDialog
{
	Q_OBJECT

public:
	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 // FINDDIALOG_H

Code: Alles auswählen

#include <QtGui>
#include "finddialog.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 &backwards"));

	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()));

	// Erstellen der Layout-Bereiche (verschachtelt!) und plazieren der Widgets
	
	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);

	// Titel des Dialogfeldes und ideale Größe des Feldes einstellen 

	setWindowTitle(tr("Find"));
	setFixedHeight(sizeHint().height());
	
	// Implementieren der Funktionen der SLOTS des Feldes:
	
	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());
	}
}

Code: Alles auswählen

#include <QApplication>
#include "finddialog.h"

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

Code: Alles auswählen

void func() {
    someCode();
    void anotherFunc() {
        moreCode();
    }
}