QT Learning Pathway (8): Create a dialog box (next)

Source: Internet
Author: User
Tags emit connect

Next, here is the source code section:

#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 &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 (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 ());


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 ());


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