如何获取 WebBrowser 控件中当前选定文本的字体大小

发布于 2024-09-12 14:41:45 字数 643 浏览 6 评论 0原文

有没有办法获取 Microsoft WebBrowser 控件 (MSHTML) 中当前选定文本的字体大小？

我知道 IHTMLDocument2::queryCommandState("FontSize", ...)，但对于过时的字体大小“xx-small”到“xx”，此方法仅返回 1 到 7 之间的值-大的”。对于“10pt”或“14px”等字体大小，不会返回有用的值。

有没有更灵活的方式来确定字体大小？

编辑：与此同时，我找到了问题的解决方案（带有来自 Microsoft 支持的一些有用提示）：

try
{
   mshtml.IHTMLTxtRange range = _dom.selection.createRange() as mshtml.IHTMLTxtRange;
   if (range != null)
   {
       mshtml.IHTMLElement2 elem = range.parentElement() as mshtml.IHTMLElement2;
       txtFontSize.Text = elem.currentStyle.fontSize.ToString();

   }
}
catch (COMException ex)
{
}

原文

Is there any way to get the font size of the currently selected text in the Microsoft WebBrowser control (MSHTML)?

I am aware of IHTMLDocument2::queryCommandState("FontSize", ...), but this method only returns a value between 1 and 7, for the outdated font sizes "xx-small" to "xx-large". For font sizes like "10pt" or "14px", no useful value is returned.

Is there a more flexible way to determine the font size?

EDIT: In the meantime, I found a solution to my question (with some helpful hints from Microsoft support):

try
{
   mshtml.IHTMLTxtRange range = _dom.selection.createRange() as mshtml.IHTMLTxtRange;
   if (range != null)
   {
       mshtml.IHTMLElement2 elem = range.parentElement() as mshtml.IHTMLElement2;
       txtFontSize.Text = elem.currentStyle.fontSize.ToString();

   }
}
catch (COMException ex)
{
}

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西瓜 2024-09-19 14:41:45

既然您已经了解了如何获取它，那么这里有一种设置方法。

mshtml.HTMLDocument doc = [Obtain HtmlDocument];
doc.execCommand("FontSize", false, "12pt");

获取您可以使用的值

doc.queryCommandValue("FontSize");

Since you found out how to get it, here is a way to set it up.

mshtml.HTMLDocument doc = [Obtain HtmlDocument];
doc.execCommand("FontSize", false, "12pt");

To get the value you can use

doc.queryCommandValue("FontSize");

回复收藏 0 原文

时间你老了 2024-09-19 14:41:45

IHTMLDocument2 htmlDocument = browser.Document.DomDocument as IHTMLDocument2;

IHTMLSelectionObject sel = (IHTMLSelectionObject)htmlDocument.selection;
IHTMLTxtRange range = (IHTMLTxtRange)sel.createRange() as IHTMLTxtRange;

if (range != null)
{
   range.select();
   var x = range.queryCommandValue("bold");
   textBoxFindData.Text = (x.ToString());
}

IHTMLDocument2 htmlDocument = browser.Document.DomDocument as IHTMLDocument2;

IHTMLSelectionObject sel = (IHTMLSelectionObject)htmlDocument.selection;
IHTMLTxtRange range = (IHTMLTxtRange)sel.createRange() as IHTMLTxtRange;

if (range != null)
{
   range.select();
   var x = range.queryCommandValue("bold");
   textBoxFindData.Text = (x.ToString());
}

回复收藏 0 原文

~没有更多了~