qfilepreview.3qt

Qt/Embedded是一个多平台的C++图形用户界面应用程序框架

.TH QFilePreview 3qt "10 November 2000" "Trolltech AS" \" -*- nroff -*-
.\" Copyright 1992-2000 Trolltech AS.  All rights reserved.  See the
.\" license file included in the distribution for a complete license
.\" statement.
.\"
.ad l
.nh
.SH NAME
QFilePreview \- Abstract preview widget for the QFileDialog
.SH SYNOPSIS
.br
.PP
\fC#include <qfiledialog.h>\fR
.PP
.SS "Public Members"
.in +1c
.ti -1c
.BI "\fBQFilePreview\fR () "
.br
.ti -1c
.BI "virtual void \fBpreviewUrl\fR ( const QUrl & url ) "
.br
.in -1c
.SH DESCRIPTION
Abstract preview widget for the QFileDialog
.PP
This class is an abstract base class which is used for implementing widgets which can display a preview of a file in the QFileDialog.
.PP
If you want to do that you have to derive your preview widget from any QWidget and from this class. Then you have to reimplement the previewUrl() method of this class which is called by the filedialog if the preview of an URL should be shown.
.PP
See also QFileDialog::setPreviewMode(), QFileDialog::setContentsPreview(), QFileDialog::setInfoPreview(), QFileDialog::setInfoPreviewEnabled(), QFileDialog::setContentsPreviewEnabled().
.PP
For an example documentation of a preview widget look at the example qt/examples/qdir/qdir.cpp.
.SH MEMBER FUNCTION DOCUMENTATION
.SH "QFilePreview::QFilePreview ()"
Constructor. Does nothing.
.SH "void QFilePreview::previewUrl ( const QUrl & url ) \fC[virtual]\fR"
This method is called by QFileDialog if a preview
for the \fIurl\fR should be shown. Reimplement this
method to do file/URL previews.
.SH "SEE ALSO"
.BR http://doc.trolltech.com/qfilepreview.html
.SH COPYRIGHT
Copyright 1992-2000 Trolltech AS, http://www.trolltech.com/.  See the
license file included in the distribution for a complete license
statement.
.SH AUTHOR
Generated automatically from the source code.