WINAPI achieved using Paint program, you can draw a straight line, rectangle, ellipse, polygon, line and borders can be set color, fill color, simple to achieve amplification, reduced function, as well as select, delete functions.
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Modify Delete Functions 修改删除等功能
Add And Delete Functions 添加和删除功能
Establish And Delete Functions 建立和删除功能
Drawing software, MFC implementation, such as graphics move, rotate, select and delete functions.
说明：画图软件，MFC实现，有图形移动、旋转、选取、删除等功能。
The edit and delete functions work in a relatively straightforward way and should not need additional explanation.
编辑和删除功能的原理相对来说比较简单，应该不需要另加解释。
tmp/CalendarCrypt.pl is a Perl program described in a later section that handles the encryption, decryption, and secure delete functions.
tmp/CalendarCrypt.pl 是一个 Perl 程序（将在后面介绍），它处理加密、解密和安全删除函数。
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