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How to add an extern reference to a Win32 API

Platform: WinForms| Category: Win32

We have two suggestions with sample projects how you host a WebBrowser control inside a form and display HTML contents and listen to events such as NavigateComplete or BeforeNavigate. Of course there are many other ways to do this.

Download htmlviewer.zip for two sample projects for the suggestions discussed below.

1) The first suggestion is to generate an ActiveX wrapper for shdocvw using the aximp tool.
The command line for this tool should be as follows:

  
  aximp c:\windows\system32\shdocvw.dll

This will generate the following assemblies.

  
  Generated Assembly: D:\Syncfusion\faq\HtmlBrowser\HtmlViewer2\SHDocVw.dll
  Generated Assembly: D:\Syncfusion\faq\HtmlBrowser\HtmlViewer2\AxSHDocVw.dll

Now you can reference these dlls in your project and use AxWebBrowser. In the attached HtmlViewer2 sample we have derived a HtmlControl class from AxWebBrowser and added some properties that let you specify a CSS Stylesheet and the Html content as a string.

2) Our second sample lets you bypass the generation of a ActiveX wrapper. You don’t have to include and ship shdocvw.dll and axshdocvw.dll. In the attached HtmlViewer sample, we derived from AxHost and attached our own IWebBrowserEvents interface by overriding the CreateSink, AttachInterfaces and DetachSink methods.

You can use HtmlControl in your form and specify HTML content by assigning a HTML string to HtmlControl. A cascading style sheet can be specified by assigning a path name to the CascadingStyleSheet property. The sample demonstrates how to use a CSS style sheet that has been embedded as a resource in the assembly.

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