内容

• 公共函数
• 重实现公共函数
• 静态公共成员
• 详细描述

Q3TextDrag Class

The Q3TextDrag class is a drag and drop object for transferring plain and Unicode text. 更多...

头：	#include <Q3TextDrag>
继承：	Q3DragObject

• 所有成员列表，包括继承成员

公共函数

	Q3TextDrag (const QString & text , QWidget * dragSource = 0, const char * name = 0)
	Q3TextDrag (QWidget * dragSource = 0, const char * name = 0)
	~Q3TextDrag ()
virtual void	setSubtype (const QString & subtype )
virtual void	setText (const QString & text )

重实现公共函数

virtual QByteArray	encodedData (const char * mime ) const
virtual const char *	format (int i ) const

• 9 公共函数继承自 Q3DragObject
• 29 公共函数继承自 QObject
• 3 公共函数继承自 QMimeSource

静态公共成员

bool	canDecode (const QMimeSource * source )
bool	decode (const QMimeSource * source , QString & string )
bool	decode (const QMimeSource * source , QString & string , QString & subtype )

• 1 静态公共成员继承自 Q3DragObject
• 7 静态公共成员继承自 QObject

额外继承成员

• 1 特性继承自 QObject
• 1 公共槽继承自 QObject
• 1 信号继承自 QObject
• 1 保护函数继承自 Q3DragObject
• 8 保护函数继承自 QObject

详细描述

The Q3TextDrag class is a drag and drop object for transferring plain and Unicode text.

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.

Qt provides no built-in mechanism for delivering only a single-line.

For more information about drag and drop, see the Q3DragObject 类和 drag and drop documentation .

成员函数文档编制

Q3TextDrag:: Q3TextDrag (const QString & text , QWidget * dragSource = 0, const char * name = 0)

Constructs a text drag object with the given name , and sets its data to text 。 dragSource is the widget that the drag operation started from.

Q3TextDrag:: Q3TextDrag ( QWidget * dragSource = 0, const char * name = 0)

Constructs a default text drag object with the given name 。 dragSource is the widget that the drag operation started from.

Q3TextDrag:: ~Q3TextDrag ()

Destroys the text drag object.

[static] bool Q3TextDrag:: canDecode (const QMimeSource * source )

Returns true if the information in the MIME source can be decoded into a QString ；否则返回 false。

另请参阅 decode ().

[static] bool Q3TextDrag:: decode (const QMimeSource * source , QString & string )

Attempts to decode the dropped information in the MIME source 到 string given. Returns true if successful; otherwise returns false.

另请参阅 canDecode ().

[static] bool Q3TextDrag:: decode (const QMimeSource * source , QString & string , QString & subtype )

这是重载函数。

Attempts to decode the dropped information in the MIME source 到 string given. Returns true if successful; otherwise returns false. If subtype is null, any text subtype is accepted; otherwise only the specified subtype is accepted.

另请参阅 canDecode ().

[虚拟] QByteArray Q3TextDrag:: encodedData (const char * mime ) const

重实现自 QMimeSource::encodedData ().

[虚拟] const char * Q3TextDrag:: format ( int i ) const

重实现自 QMimeSource::format ().

[虚拟] void Q3TextDrag:: setSubtype (const QString & subtype )

Sets the MIME subtype of the text being dragged. 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").

[虚拟] void Q3TextDrag:: setText (const QString & text )

设置 text to be dragged. You will need to call this if you did not pass the text during construction.