The CHM

under Win7 64 bit recently has several Hujiang data, all in chm format, but under win7 64 bit, it can not display the controls such as audio and video flash inside, although it can be opened by source file. Video files, but it's very troublesome.
There are not many people on the Internet who seem to have encountered it. Basically, I found several related posts. The main problem is the problem of the open program of chm, borrowing baidu chm to explain the following
CHM is the shorthand for English "Compiled Help Manual", that is, the compiled help file ".CHM is Microsoft's new generation help file Format, using HTML as the source text, compiling and storing the help content in a database-like format.
The CHM file format is a help file system based on the HTML file feature introduced by Microsoft in 1998 to replace the earlier WinHelp help system. It is also a hypertext markup language. In Windows 98, the CHM type file is called " Compiled HTML help files ". Javascript supported by Internet Explorer, VBs cript, ActiveX, Java Applet, Flash, common graphics files (GIF, JPEG, PNG), audio and video files (MID, WAV, AVI), etc. Etc., CHM also supports, and can be linked to the Internet through the URL.
Simply say that the help file format that comes with Windows is opened by hh.exe. In the default case, %WINDOWS%/is called. Hh.exe to handle, for 64-bit windows, there are actually 3 hh.exe, located in
%WINDOWS%/hh.exe,
%WINDOWS%/system32/hh.exe and
%WINDOWS%/SysWOW64/hh.exe, the first 2 are 32-bit hh.exe (17k), only
%WINDOWS%/SysWOW64/hh.exe (15k) is a 64-bit program To solve, you need to use 64-bit hh.exe to overwrite
%WINDOWS%/hh.exe
pay attention to the previous backup, and if you use
directly %WINDOWS%/SysWOW64/hh.exe is overwritten to
%WINDOWS%/hh.exe, there should be a prompt to be unable to operate, this is because the default group of this file is TrustInstaller, we generally log in User or Administrator, to modify, you need to right click on the properties of
%WINDOWS%/hh.exe, click Security --> Advanced --> Owner --> Edit, change the owner to Administrator, OK, go back to the Security tab, click Edit, check the full control, OK, and then overwrite with 64-bit hh.exe. After overwriting, it should be normal to open chm again.