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List:       kde-devel
Subject:    Re: function of setButtons( Close ) of class KDialog
From:       Kevin Krammer <kevin.krammer () gmx ! at>
Date:       2012-02-05 10:26:23
Message-ID: 201202051126.38700.kevin.krammer () gmx ! at
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Hi,

On Sunday, 2012-02-05, Rahul Sharma wrote:
> Hi,
> I was going through the source code of *Kmplot .  *And at a place I got
> stuck with it when i found that in a class inherited from KDialog, a
> function setButtons( Close ) was used.
> I understand that it creates a close button in the window but I was willing
> to know that when the button is clicked, does it call close() slot (as
> normally we would do when we create a close pushbutton we connect the
> clicked() signal to the close() slot) or it just simply emits close event
> signal.

It does not call QWidget::close() but QDialog::done()

From lxr.kde.org [1]

914     case Close:
915       emit closeClicked();
916       done(Close); // KDE5: call reject() instead; more QDialog-like.
917       break;

This is necessary because a dialog might be run using QDialog::exec() which 
returns an exit code allowing the caller to do different things depening on 
result.

> And one more query, what is the name of the button, simpy close or
> something else ( as in QPushButton* closeButton, I can say that I created a
> PushButton named closeButton ).

It is not a member of the KDialog class if that is what you are asking.
It gets added to an internal button map with KDialog::Close being the key.

Again from lxr.kde.org

155   KPushButton *button = new KPushButton( item );
156   mButtonBox->addButton( button, role );
157 
158   mButtonList.insert( key, button );

See KDialog::button(ButtonCode)

Cheers,
Kevin

[1] http://lxr.kde.org/source/kde/kdelibs/kdeui/dialogs/kdialog.cpp

-- 
Kevin Krammer, KDE developer, xdg-utils developer
KDE user support, developer mentoring

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