Q3ColorDrag Class

The Q3ColorDrag class provides a drag and drop object for transferring colors between widgets. 更多...

头：	#include <Q3ColorDrag>
继承：	Q3StoredDrag

所有成员列表，包括继承成员

公共函数

	Q3ColorDrag (const QColor & col , QWidget * dragsource = 0, const char * name = 0)
	Q3ColorDrag (QWidget * dragsource = 0, const char * name = 0)
void	setColor (const QColor & color )

3 公共函数继承自 Q3StoredDrag
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 (QMimeSource * source )
bool	decode (QMimeSource * source , QColor & color )

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 Q3ColorDrag class provides a drag and drop object for transferring colors between widgets.

This class provides a drag object which can be used to transfer data about colors for drag and drop and in the clipboard. For example, it is used in QColorDialog .

The color is set in the constructor but can be changed with setColor ().

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

成员函数文档编制

Q3ColorDrag:: Q3ColorDrag (const QColor & col , QWidget * dragsource = 0, const char * name = 0)

Constructs a color drag object with the given col . Passes dragsource and name 到 Q3StoredDrag 构造函数。

Q3ColorDrag:: Q3ColorDrag ( QWidget * dragsource = 0, const char * name = 0)

Constructs a color drag object with a white color. Passes dragsource and name 到 Q3StoredDrag 构造函数。

`[static]` bool Q3ColorDrag:: canDecode ( QMimeSource * source )

Returns true if the color drag object can decode the MIME source ；否则返回 false。

`[static]` bool Q3ColorDrag:: decode ( QMimeSource * source , QColor & color )

Decodes the MIME source , and sets the decoded values to the given color . Returns true if the decoding is successful. Returns false if the size of the encoded data is not the expected size.

void Q3ColorDrag:: setColor (const QColor & color )

设置 color of the color drag.

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