CHM | The Canadian Hydrological Model | Machine Learning library

The short answer is - I am not aware of any application that works with integrated .mp4 videos today.

After a few current attempts, I can only confirm the statement already made by Tim Green in 2014:

.. CHM now only permits embedding of SWF video files. All other video file formats must be external to the CHM, otherwise they won't play.

Please note following hints quoted from About using video files

Use online video services in CHM. Help+Manual handles this so that the online site is only accessed when the user actually clicks on the preview image to start the video.

Local video formats will always cause problems in CHM files for at least some of your users and should be avoided.

Since the termination of Flash support, Microsoft CHM files no longer support embedding for any video formats. MP4 video files can be embedded in Windows eWriter eBooks. All other video files must be distributed with your help as separate files.

Link for further information:

• Running Applets/Media Player etc in a HH Window

For special cases I remember some old stuff to leave the video files outside the help file and use scripting to reference them. Including large video files in your help project could result in an enormous compiled help file. There may also be times when you need to update these files.

The short answer - there is no automated way!

The keywords are assigned manually to the topics with Microsoft HTMLHelp Workshop. Please keep in mind - the technical development for CHM files and the HTMLHelp Workshop is 25 years old. But there is no real alternative under Windows even today, unfortunately.

You probably expect from Include keywords from HTML files option the keywords (HTML syntax e.g.: ) to be integrated automatically. But keywords for CHM are thought of differently here and something special (e.g. ). I can't remember but maybe the HTML tag keywords didn't exist at that time (25 years ago).

You know, a single word index is quite familiar to everyone, having been employed in the back of reference and trade books practically since the beginning of print. But creating a good index for HTMLHelp files (CHM) is time consuming and requires a lot of work. Since users are increasingly using the full text search of CHM Viewer (or Google), I rarely create a complex index nowadays.

(1) You may want to create the index.hhk file by yourself writing a script e.g.:

If I understand correctly, you're simply requiring this:

The best - or most intuitive - way to do so is to also reflect their relationship in the relational SQLite database.

This means you'd have an Announcement table and a Material table.

In the Material table you'll need to add a 'foreign key' with the primary id of the Announcement it refers to. This way you'll be able to store 0...n Materials for an Announcement. Your Announcement model/ table doesn't need to be changed and can stay as is.

Note: As far as I know SQLite doesn't support real 'foreign key' definitions. This isn't too bad, since it's only about the concept of the 'pointer' from one table to another based on the primary key. In a real, full-fledged database it would evaluate it and ensure the data integrity based on it. This strictness is not always needed or wanted and therefore not supported in SQLite - to make it more lightweight. Also you can ensure the same data integrity with properly written code.

Then you'd have two tables looking like the following:

Announcement (courseId, id, text, ...)

Material (announcementId, id, title, alternateLink, ...)

Edit: This is also called a OneToMany relationship. When you look for 'modelling a OneToMany relationship in relational database' you will find a lot of resources explaining it in more detail.

When storing an Announcement you'll also 'simply' store the Material objects in their table. Here you can evaluate if you want to maintain a strong data integrity and want to store all Announcement and Material objects in one single transaction or if it doesn't need to be so strict and you'll store it in different transactions.

There are several possibilities:

• A single Announcement object is stored along with all it's Materials in one transaction
• All Announcement objects are stored along with all Materials in one transaction
• All Announcement objects are stored in one transaction, then all Material objects are stored in one transaction

The first option is to logically prefer and will provide the best user experience.

When loading the Announcements from the database you can decide whether you want to load the list of Materials eagerly or lazy. The query should look like:

SELECT * FROM Material WHERE announcementId = this.id.

It'll return you the list of Materials associated with the individual Announcement.

You need to apply .each()

Working example:

In your VSTO addin, if you create a macro for running some background code without any ui then I suggest to create XLL instead of VSTO addin so that you can register it with RegisterXLL function as you mention in your question.

You can create XLL with Excel-DNA framework. You dont need to write too much code, just copy paste VSTO code and changes some reference.

Or you can try to add VSTO addin using excel_instance.AddIns.Add(addin_path) and later on make installed=true. But before doing this, check your addin is register in your user/machine registry.

Sorry, I just figured out myself. the issue is when open word 2019, the program has an default view of "read" mode (which prevents the user to modify the document. you can switch the mode at the right bottom corner of word). Then I changed the word default view from read mode to print layout in word option. the script ran without the error.

more information on "How Do You Make Print Layout the Default View Layout in Microsoft Word?"

Link

The short story - use full path when looking inside a ITS (CHM) file. Relative path specifications including topic specification within the CHM do not work according to my tests. It only works for the CHM help file itself.

A series of security fixes years ago has reduced HTMLHelp to functioning as local help only. Maybe this has been fixed differently.

I hope to give you an idea, but you'll have to adapt it for your needs (you mentioned using IE11). I have no experience with Flash ActionScript because there has always been a security issue with it as well. So, I don't know why ActionScript is working in this case, and JavaScript not.

HTML Help 1.x does not have the capability of delivering compressed help over http. You can point to a .chm on the user's local drive, and you can link to a .chm for download, but that's as far as it goes.

The ability to look inside an ITS (CHM) file is something unique to Microsoft Internet Explorer only. Only Internet Explorer (NOT Microsoft Edge browser) could load a locally path like:

The specific answer to your question:

Why do we type ExtractTemporaryFiles('{tmp}\Readme.txt') in the [Code] section?

The {tmp} reference in the ExtractTemporaryFiles example code is apparently required for the ExtractTemporaryFiles function, although this is undocumented. The {tmp} reference is not present in the documentation sample code for the ExtractTemporaryFile procedure: