TWebBrowser-检测插入符号下的标签 [英] TWebBrowser - Detecting the tag under caret

问题描述

我想检测插入符是哪个HTML标记(更确切地说是超链接).

I want to detect on which HTML tag (more exactly hyperlink) is the caret.

procedure THTMLEdit.ShowTag;     
var
  CursorPos: TPoint;
  HtmlElement: IHTMLElement;
  iHTMLDoc: IHtmlDocument2;
begin
 if Supports(wbBrowser.Document, IHtmlDocument2, iHTMLDoc) then
  begin
    if GetcaretPos(CursorPos) then
    begin
      CursorPos := wbBrowser.screentoclient(CursorPos);
      HtmlElement := iHTMLDoc.ElementFromPoint(CursorPos.X, CursorPos.Y);  // I NEED KEYBOARD CARET HERE, NOT MOUSE CURSOR
      if HtmlElement <> NIL
      then label1.Caption:= HtmlElement.tagName;
    end;
  end;
end;

注意:
TWebBrowser处于DesignMode(DesignMode:='On').
TWebBrowser在设计时采用其自己的形式，但在运行时将以另一种形式(在面板中)重新父级化.

Notes:
TWebBrowser is in DesignMode ( DesignMode := 'On' ).
TWebBrowser is in its own form at design time but at runtime is re-parented in another form (in a panel).

更新:
我需要的是IHTMLTxtRange(我认为).当我双击链接/单词时，它起作用.但是当不选择文本/链接时，我不知道如何将标签插入插入符号.

UPDATE:
The thing that I need is IHTMLTxtRange (I think). It works when I double click a link/word. But I don't know how to get the tag under caret when no text/link is selected.

推荐答案

GetcaretPos(CursorPos)返回客户端(相对)坐标(请参阅

GetcaretPos(CursorPos) returns client (relative) coordinates (See GetCaretPos function)

删除wbBrowser.screentoclient(CursorPos)，它应该可以正常工作.我已经在上面的代码示例中进行了测试

Remove wbBrowser.screentoclient(CursorPos) and it should work fine. I have tested with your code sample above

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