设置文件的访问权限,您可以随意设置文件的删除修改功能

说明：  精通gdi+这本书的源码，讲得很详细，大家可以看看(Proficient in gdi+ source code of this book, made it very detailed, we can see)

qt实现电子相册的功能，能支持jpg,xpm,png等格式

A little FAT32 Parser with some fuctions.

dxflib-3.3.4-src ，dxflib是一个用来读写DXF文件的C++库。当读DXF文件的时候,dxflib分析文件并且调用用户自己定义的函数来添加实体、层、等。(dxflib-3.3.4-src，dxflib is an opensource C++ library for reading and writing AutoCAD (R) DXF files. )

本代码是通过opencv读取视频，可以播放，也可以提取帧图片保存起来，可以设置需要保存的帧数。文件中有测试视频

说明：  东西、南北两干道交于十字路口，各干道有一组红、绿、黄三个指示灯，指挥车辆和行人安全通行。南北方向为主干道，通行时间为35秒；东风方向为支干道，通行时间为25秒。通行时间最后3秒，绿灯灭，黄灯闪烁，黄灯闪烁完毕变更通行车道。通行时间由数字显示器显示，黄灯3秒闪烁不单另计时。 特殊情况控制通行方式控制，用按键开关K1控制主道通行，支道禁行，K2控制支道通行，主道禁行，特殊情况控制通行放行。 有紧急情况时用按键开关K3控制两道均为红灯。(The east-west and North-South arterial roads intersect at the intersection. Each arterial road has a group of red, green and yellow indicator lights to guide vehicles and pedestrians to pass safely. The north-south direction is the main road with a traffic time of 35 seconds; the east direction is the branch road with a traffic time of 25 seconds. At the last 3 seconds of the traffic time, the green light is off, the yellow light is flashing, and the yellow light is flashing to change the traffic lane. The traffic time is displayed by the digital display, and the yellow light flashes for 3 seconds, not only for another time. Under special circumstances, control the way of passage. Use key switch K1 to control the passage of main road, Branch Road, K2 to control the passage of branch road, main road and special circumstances to control the passage and release. In case of emergency, use key switch K3 to control two red lights.)

SSIM 1.0 Local Search Similarity

用vs实现绘制基本的图形，曲线，矩形，图像等，且属于联机绘图(Vs the drawing using the basic graphics, curves, rectangles, images, and graphics are online)

输入一个十进制数字，打印出其二进制所包含的1的个数，空间复杂度很小(Enter a decimal number, print out its binary contains a number, a very small space complexity)

在C++MFC框架应用程序里,当浮动工具条被拖离主窗口后,(In a C MFC framework application, when the float bar is dragged out of the main window,)