I want to add another MSHTML question. Thanks to all responses.
We use in Delphi the standard TWebbrowser component, that uses mshtml.dll internally. Additionaly we use the registry to ensure that the pages renders with the new rendering engine (Web-Browser-Control-Specifying-the-IE-Version, MSDN: FEATURE_BROWSER_EMULATION). So we use the rendering of IE 10 but we have the same results with ie 8 to ie 11.
Using the standard rendering machine of MSHTML (IE7) works right, but due to new rendering options we need the new rendering of MSHTML.
We use the design mode of the control to enabled the user to make changes in the documents:
var
mDocument: IHTMLDocument2;
begin
mDocument := ((ASender as TWebBrowser).Document as IHTMLDocument2);
mDocument.designMode := 'on';
Now we have the following problem: We load th following (simplified) HTML via the IPersistStreamInit.Load(...) into the WebBrowser:
<html>
<body>
What should I do
with some of the
spaces.
</body>
</html>
In the WebBrowser user can see the following:
Now, when selecting the word "with" in the WebBrowser in editing mode, and typing a character, some spaces appear. The HTML now has in it - exactly as many as there has been spaces in the HTML before editing:
The code is:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv="Content-Type" content="text/html; charset=unicode">
<META name="GENERATOR" content="MSHTML 10.00.9200.16540"></HEAD>
<BODY> What should I do n some of the spaces.
</BODY></HTML>
The same effect can be achieved by replacing the word "spaces" in the WebBrowser.
This is a bad behaviour for users using our application.
Every HTML code with white spaces infront of text, has the same behaviour. The mess is, that MSHTML itself generates such HTML.
By now we think of a solution to remove all the spaces on the left of each line, but we think that such workarounds could end in a bigger mess, because they change the HTML. This could cause some different behaviour of the rendering.
Thinking about removing the spaces before each line, puts you somewhere in the right direction, but nowhere near what you should be doing: convert the data info HTML before
IPersistStreamInit.Load.Since the HTML specification prescribes any whitespace in the HTML code should be treated as a single instance of whitespace (except inside
<pre>tags), it's understandable that IE's design-mode is confused what to with these extra spaces when you edit around them. You've stumbled upon a border case.I suggest you either don't use
IPersistStreamInit.Loadbut
Navigate('about:<html><body></body></html>');anddocument.body.innerText:=...instead,or take care to properly format the initial HTML:
&with&,<with<etc...#13#10with'<br />'and#13#10#13#10with'</p><p>'?)