Q3Picture Class

The Q3Picture 类是描绘设备，它记录并重演 Q3Painter 命令。更多...

头：	#include <Q3Picture>
继承：	QPicture

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公共函数

	Q3Picture ()
	Q3Picture (const QPicture & other )
bool	load (QIODevice * device , const char * format = 0)
bool	load (const QString & fileName , const char * format = 0)
bool	save (QIODevice * device , const char * format = 0)
bool	save (const QString & fileName , const char * format = 0)

14 公共函数继承自 QPicture
12 公共函数继承自 QPaintDevice

额外继承成员

1 保护函数继承自 QPaintDevice

详细描述

The Q3Picture 类是描绘设备，它记录并重演 Q3Painter 命令。

Q3Picture can also read and write SVG (Scalable Vector Graphics) files, a W3C XML format. Note that when using the load () 和 save () functions to read and write SVG files, the format must be specified.

另请参阅 QPicture .

成员函数文档编制

Q3Picture:: Q3Picture ()

构造 Q3Picture .

Q3Picture:: Q3Picture (const QPicture & other )

构造副本为 other .

bool Q3Picture:: load ( QIODevice * device , const char * format = 0)

Loads the picture in the specified format 从给定 device . Returns true if the file is loaded successfully; otherwise returns false.

Note that when using the load() function to read SVG files, the format must be specified. For example:

Q3Picture picture;
picture.load("drawing.svg", SVG);

另请参阅 save ().

bool Q3Picture:: load (const QString & fileName , const char * format = 0)

这是重载函数。

Loads the picture in the specified format from a file with the given fileName . Returns true if the file is loaded successfully; otherwise returns false.

bool Q3Picture:: save ( QIODevice * device , const char * format = 0)

Saves the picture in the specified format 到给定 device . Returns true if the save is successful. Returns false if, for example, the picture is still being painted, i.e., QPainter::end () has not yet been called.

Note that when using the save() function to save SVG files, the format must be specified. For example:

Q3Picture picture;
QPainter painter;
painter.begin(&picture);           // paint in picture
...
painter.end();                     // painting done
picture.save("drawing.svg", SVG);  // save picture

另请参阅 load ().

bool Q3Picture:: save (const QString & fileName , const char * format = 0)

这是重载函数。

Saves the picture in the specified format to the file with the given fileName .

另请参阅 load ().