Analysis of the working principle of the WB editor plug-in [yysun]

WB editor can enrich its functions through plug-ins. For example, a spelling check plug-in, a quick typographical plug-in, and a highlighted syntax plug-in have been released.

The WB editor plug-in is a plug-in software module, which is compiled into a DLL. As long as you put it in the running directory of WB Editor, WB editor can automatically identify it. Deleting the plug-in DLL does not affect the basic functions of WB editor. A plug-in can have multiple commands, and each command can be used to implement a function. For example, a check plug-in has multiple commands to check English, French, German, and Spanish ....

To understand the working principle of the WB editor plug-in, first look at what is the WB editor plug-in.

The plug-in is a class that implements the iwbeditorplugin interface.

Public interface iwbeditorplugin
{
String getpluginname ();
String [] getcommands (string parentcommand );
Int querystatus (string name );
Void executecommand (string name );
}

When WB editor is started, it automatically scans all the DLL files under the program running directory and finds the classes that implement the iwbeditorplugin interface. After finding the plug-in, load the plug-in class dynamically, call its getpluginname method to query the plug-in name, and display the name under the plugin menu. Continue to use getcommands to query the plug-in command names and display them under the plug-in name menu. This enables multiple commands of a plug-in. Getcommands can return NULL, indicating that there is no command, and the plug-in name becomes a unique command.

If the user clicks the plug-in menu, WB editor calls executecommand to execute the command selected by the user. At this time, the control of the program running is handed over to the plug-in.

How does the plug-in control WB editor? This requires the wbeditorservice class. WB editor has initialized wbeditorservice before it starts to run. The plug-in can

-Use wbeditorservice. geteditorcontent to get the content in the editor.
-Use wbeditorservice. seteditorcontent to set the new editing content.
-Use wbeditorservice. getselection to obtain the selected content in the editor.
-Use wbeditorservice. inserttext to insert content to the editor.
-There are also advanced functions for text replacement, obtaining com ihtmlelement, ihtmldocument, and RSS item xmldocument.

WB editor plug-in interface standards and references: http://www.wbeditor.com/content/view/34/44

The WB editor plug-in can be implemented using C #, VB. NET or Delphi 8, because it is a. Net family.
The practice is:
1. Create a class library, add reference iwbeditorplugin. dll
2. Create a class of iwbeditorplugin interface and plug-in functions.
3. After compilation, copy the obtained DLL to the WB editor running directory. Run WB editor again and you will see a new plug-in under the Plugins menu.

If you are interested, please try it.