-
animal
曾经做的一个动物领养系统,涉及到access数据库,程序里对用到了MFC里少见的几个控件,这个程序对于数据库编程的初学者有很大的帮助(Have to do an animal adoption system, relates to access a database program to use the MFC controls in a few rare, this procedure for the database programming has great help for beginners)
- 2008-06-08 01:10:08下载
- 积分:1
-
ccjh2.71
重出江湖2.71服务端源码,由金字塔卓越数码开发,送给有帮助的人(Comeback 2.71 server source code, by the Pyramid outstanding digital development, to help people
)
- 2021-01-19 20:18:42下载
- 积分:1
-
GifCodec
参考网上的资料写的gif编解码。
编码用gdi解析常用图片格式,然后组装成gif
解码吧gif的每一帧转换成dib
gif文件格式网上有很多介绍
gif用的变长lzw压缩算法:
没弄懂原理,只知道过程。压缩取一个字符作为后缀,看看字符串是否存在。存在,用对应的编码作为前缀继续取;不存在把字符串添加到字典,前缀添加到输出流,后缀作为前缀继续取。解压取一个编码看看字典中是否存在。存在用对应的字符串的第一个字符作为后缀,看看当前字符串是否存在,不存在添加到字典中,后缀作为前缀,前缀对应的字符串添加到输出流,继续取;编码不存在,前缀对应的字符串的第一个字符作为后缀(这时当前字符串肯定不存在,字典中下一个可用编码肯定等于刚取出的编码),字符串添加到字典中,编码作为前缀,前缀对应的字符串添加到输出流,继续取。
编码流转换成字节流是按位从低到高的,window是小端模式(低字节在低地址),字节内低位在右边。
24位dib转换成8位dib时使用的八叉树算法
图片拉伸时参考的网上的双线性插值算法。
字典满了位数加一,位数是12时不加(Online reference materials written gif codec.
Encoded using gdi resolve common image formats, and then assembled into a gif
Each frame decode it into a gif dib
There are many online gif file format introduced
gif lzw with variable length compression algorithm:
Did not understand the principle, only know the process. Compression takes a character as a suffix, and see if there is a string. Exist as a prefix to continue to take with the corresponding encoding there is no string to add to the dictionary, a prefix added to the output stream, the suffix as a prefix to continue to take. Take a look at extracting coding dictionary exists. Exist with the corresponding first character string as a suffix to see the current string exists, there is no add to the dictionary, the suffix as a prefix, the corresponding string to the output stream, continue to take coding does not exist, prefix corresponding first character string as a suffix (when the current string certainly does not exis)
- 2015-01-17 20:22:25下载
- 积分:1
-
J2000toRTN
将J2000惯性系下的坐标转换到RTN卫星坐标系下。(It is a coordinate conversion program J2000 to RTN.)
- 2020-11-11 22:09:45下载
- 积分:1
-
TripleDes算法de实现
之前,我在一个项目开发过程中,涉及到了TripleDes的算法,在实现过程中,我也参考了论坛现有的关于3DES的代码,发现大部分的代码在算法的实现上不够严谨,或者小有偏差,特别是对3DES的两种模式:ECB,CBC都罕有涉及。此版本提供的TripleDes可以实现3DES在两种模式下的2key/3key的加、解密。在速度优化和内存控制上都做了优化。(Before, I in a project development process, involving the TripleDES algorithms, in the realization of the process, I also made reference to a forum on the existing 3DES code and found that most of the code in the algorithm for the realization of loosely, or small deviations, especially for 3DES of two modes: ECB, CBC are rarely involved. This version provided by TripleDES 3DES can be achieved in two modes of 2key/3key increases, decryption. Optimized in terms of speed and memory control are optimized.)
- 2005-05-18 21:08:51下载
- 积分:1
-
zbzh070620
用来实现极坐标和直角坐标的转换,C++程序(Used to achieve the polar coordinates and rectangular coordinates conversion, C++ Procedures)
- 2007-10-25 16:14:34下载
- 积分:1
-
UiFeature
很好的一个界面库,基于directui的,类似QQ,希望大家能用好他。(A good interface library, based directui, similar to QQ, I hope we can better him.)
- 2014-01-02 23:37:34下载
- 积分:1
-
KsBinSword
介于一些反病毒资料源码 希望大家好好看看
走过路过 请不要错过(Between some anti-virus information source hope that we have a good look, do not miss the walk passing through)
- 2009-11-19 22:09:17下载
- 积分:1
-
chuankosheji
串口设计,基于C++语言 进行编写,用到MFC图形界面的设计(itis very useful for you who is learn visual c++)
- 2010-05-31 13:50:07下载
- 积分:1
-
Forward-intersection-
摄影测量后方交会代码:输入像点坐标即可算出6个外方位元素。(Photogrammetry resection code: input like some coordinates can work out six foreign a elements.
)
- 2012-01-07 21:00:41下载
- 积分:1