qtextdrag.3qt

Trolltech公司发布的基于C++图形开发环境

'\" t
.TH QTextDrag 3qt "21 January 2005" "Trolltech AS" \" -*- nroff -*-
.\" Copyright 1992-2001 Trolltech AS.  All rights reserved.  See the
.\" license file included in the distribution for a complete license
.\" statement.
.\"
.ad l
.nh
.SH NAME
QTextDrag \- Drag and drop object for transferring plain and Unicode text
.SH SYNOPSIS
\fC#include <qdragobject.h>\fR
.PP
Inherits QDragObject.
.PP
.SS "Public Members"
.in +1c
.ti -1c
.BI "\fBQTextDrag\fR ( const QString & text, QWidget * dragSource = 0, const char * name = 0 )"
.br
.ti -1c
.BI "\fBQTextDrag\fR ( QWidget * dragSource = 0, const char * name = 0 )"
.br
.ti -1c
.BI "\fB~QTextDrag\fR ()"
.br
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.BI "virtual void \fBsetText\fR ( const QString & text )"
.br
.ti -1c
.BI "virtual void \fBsetSubtype\fR ( const QCString & st )"
.br
.in -1c
.SS "Static Public Members"
.in +1c
.ti -1c
.BI "bool \fBcanDecode\fR ( const QMimeSource * e )"
.br
.ti -1c
.BI "bool \fBdecode\fR ( const QMimeSource * e, QString & str )"
.br
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.BI "bool \fBdecode\fR ( const QMimeSource * e, QString & str, QCString & subtype )"
.br
.in -1c
.SH DESCRIPTION
The QTextDrag class is a drag and drop object for transferring plain and Unicode text.
.PP
Plain text is passed in a QString which may contain multiple lines (i.e. may contain newline characters). The drag target will receive the newlines according to the runtime environment, e.g. LF on Unix, and CRLF on Windows.
.PP
Qt provides no built-in mechanism for delivering only a single-line.
.PP
For more information about drag and drop, see the QDragObject class and the drag and drop documentation.
.PP
See also Drag And Drop Classes.
.SH MEMBER FUNCTION DOCUMENTATION
.SH "QTextDrag::QTextDrag ( const QString & text, QWidget * dragSource = 0, const char * name = 0 )"
Constructs a text drag object and sets its data to \fItext\fR. \fIdragSource\fR must be the drag source; \fIname\fR is the object name.
.SH "QTextDrag::QTextDrag ( QWidget * dragSource = 0, const char * name = 0 )"
Constructs a default text drag object. \fIdragSource\fR must be the drag source; \fIname\fR is the object name.
.SH "QTextDrag::~QTextDrag ()"
Destroys the text drag object and frees up all allocated resources.
.SH "bool QTextDrag::canDecode ( const QMimeSource * e )\fC [static]\fR"
Returns TRUE if the information in \fIe\fR can be decoded into a QString; otherwise returns FALSE.
.PP
See also decode().
.PP
Example: iconview/simple_dd/main.cpp.
.SH "bool QTextDrag::decode ( const QMimeSource * e, QString & str )\fC [static]\fR"
Attempts to decode the dropped information in \fIe\fR into \fIstr\fR. Returns TRUE if successful; otherwise returns FALSE.
.PP
See also canDecode().
.PP
Example: iconview/simple_dd/main.cpp.
.SH "bool QTextDrag::decode ( const QMimeSource * e, QString & str, QCString & subtype )\fC [static]\fR"
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
.PP
Attempts to decode the dropped information in \fIe\fR into \fIstr\fR. Returns TRUE if successful; otherwise returns FALSE. If \fIsubtype\fR is null, any text subtype is accepted; otherwise only the specified \fIsubtype\fR is accepted.
.PP
See also canDecode().
.SH "void QTextDrag::setSubtype ( const QCString & st )\fC [virtual]\fR"
Sets the MIME subtype of the text being dragged to \fIst\fR. The default subtype is "plain", so the default MIME type of the text is "text/plain". You might use this to declare that the text is" text/html" by calling setSubtype("html").
.SH "void QTextDrag::setText ( const QString & text )\fC [virtual]\fR"
Sets the text to be dragged to \fItext\fR. You will need to call this
if you did not pass the text during construction.

.SH "SEE ALSO"
.BR http://doc.trolltech.com/qtextdrag.html
.BR http://www.trolltech.com/faq/tech.html
.SH COPYRIGHT
Copyright 1992-2001 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.
.SH BUGS
If you find a bug in Qt, please report it as described in
.BR http://doc.trolltech.com/bughowto.html .
Good bug reports help us to help you. Thank you.
.P
The definitive Qt documentation is provided in HTML format; it is
located at $QTDIR/doc/html and can be read using Qt Assistant or with
a web browser. This man page is provided as a convenience for those
users who prefer man pages, although this format is not officially
supported by Trolltech. 
.P
If you find errors in this manual page, please report them to
.BR [e-mail] .
Please include the name of the manual page (qtextdrag.3qt) and the Qt
version (3.3.4).