內容

• 公共函數
• 重實現公共函數
• 靜態公共成員
• 詳細描述

Q3ImageDrag Class

The Q3ImageDrag class provides a drag and drop object for transferring images. 更多...

頭：	#include <Q3ImageDrag>
繼承：	Q3DragObject

• 所有成員列錶，包括繼承成員

公共函數

	Q3ImageDrag (QImage image , QWidget * dragSource = 0, const char * name = 0)
	Q3ImageDrag (QWidget * dragSource = 0, const char * name = 0)
	~Q3ImageDrag ()
virtual void	setImage (QImage image )

重實現公共函數

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

• 9 公共函數繼承自 Q3DragObject
• 29 公共函數繼承自 QObject
• 3 公共函數繼承自 QMimeSource

靜態公共成員

bool	canDecode (const QMimeSource * source )
bool	decode (const QMimeSource * source , QImage & image )
bool	decode (const QMimeSource * source , QPixmap & pixmap )

• 1 靜態公共成員繼承自 Q3DragObject
• 7 靜態公共成員繼承自 QObject

額外繼承成員

• 1 特性繼承自 QObject
• 1 公共槽繼承自 QObject
• 1 信號繼承自 QObject
• 1 保護函數繼承自 Q3DragObject
• 8 保護函數繼承自 QObject

詳細描述

The Q3ImageDrag class provides a drag and drop object for transferring images.

Images are offered to the receiving application in multiple formats, determined by Qt's output formats.

成員函數文檔編製

Q3ImageDrag:: Q3ImageDrag ( QImage image , QWidget * dragSource = 0, const char * name = 0)

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

Q3ImageDrag:: Q3ImageDrag ( QWidget * dragSource = 0, const char * name = 0)

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

Q3ImageDrag:: ~Q3ImageDrag ()

Destroys the image drag object.

[static] bool Q3ImageDrag:: canDecode (const QMimeSource * source )

Returns true if the information in the MIME source can be decoded into an image; otherwise returns false.

另請參閱 decode ().

[static] bool Q3ImageDrag:: decode (const QMimeSource * source , QImage & image )

Decode the dropped information in the MIME source 到 image . Returns true if successful; otherwise returns false.

另請參閱 canDecode ().

[static] bool Q3ImageDrag:: decode (const QMimeSource * source , QPixmap & pixmap )

這是重載函數。

Decodes the dropped information in the MIME source 到 pixmap . Returns true if successful; otherwise returns false.

This is a convenience function that converts the information to a QPixmap via a QImage .

另請參閱 canDecode ().

[虛擬] QByteArray Q3ImageDrag:: encodedData (const char * fmt ) const

重實現自 QMimeSource::encodedData ().

[虛擬] const char * Q3ImageDrag:: format ( int i ) const

重實現自 QMimeSource::format ().

[虛擬] void Q3ImageDrag:: setImage ( QImage image )

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