CreateShapefile

VC中使用ADO访问数据库的一个事例程序,包含了许多SQL语句，对初学者非常有意义(ADO visits access database.It contains many sql sentences,very significant to beginners)

C++编写的简单分数类（包含复制，约分，四则运算等）(Simple fraction classes written in C++ (including duplication, reduction, four operations, etc.))

利用Qt实现了自动打开图像的UI界面，利用了OPENCV库(Achieved using Qt UI interface automatically open the image, use the OPENCV library)

利用VC编程，实现数据的联系读取和数据显示，实时显示时钟(Using VC programming, data read and data links, real-time display clock)

一种用近邻搜索法解决VRP问题的源代码，可以解决多种问题(Source code of a nearest neighbor search method to solve the VRP problem)

寻迹，直流电机驱动，pwm调节，小车程序(Tracing, dc motor drive, PWM adjustment, car program)

虚拟键盘驱动实现，在驱动级模拟了键盘的操作(The realization of the virtual keyboard driver in the driver level to simulate the operation of the keyboard)

实时通讯和P2P开发工具,由一套易用的控件和DLL组成,功能包括好友列表(Real-time communication and P2P development tools, consisting of a set of easy-to-use controls and DLL, including a list of friends)

C# 编写SQL Server存储过程，可扩展数据库功能(C# Writing SQL Server Storage Procedures)

说明：  在QTcreator平台下，实现上位机与下位机建立简单通讯协议下的串口数据通讯，用到QT串口库和qchart对数据进行实时绘图，可以借鉴大部分代码，只要将里面数据协议部分对应修改下就ok了(In the QT creator platform, the serial data communication between the upper computer and the lower computer is realized under the simple communication protocol. The QT serial port library and qchart are used for real-time drawing of the data. Most of the codes can be used for reference. As long as the data protocol part is modified correspondingly, it is OK)