mshtml.IHTMLElement的位置给出了意想不到的结果 [英] Position of mshtml.IHTMLElement gives unexpected result
问题描述
嗨
我需要确定mshtml.HtmlDocument树中所有DOM元素的确切坐标。
我使用mshtml.IHTMLElement.offsetTop和offsetLeft结合IHTMLElement.offsetParent
分别使用mshtml.IHTMLElement2.getBoundingClientRect（）来计算元素的位置。
/>代码片段：
mshtml.IHTMLElement htmlElem;
mshtml.IHTMLElement htmlOffsetParent;
MyPosition position;
position.hbsoluteTop = htmlElem.offsetTop;
position.AbsoluteLeft = htmlElem.offsetLeft;
Hi
I need to determine the exact coordinates for all DOM elements in a mshtml.HtmlDocument tree.
I use mshtml.IHTMLElement.offsetTop and offsetLeft in combination with IHTMLElement.offsetParent
rspectively mshtml.IHTMLElement2.getBoundingClientRect() to figure out the position of a element.
Code snippet:
mshtml.IHTMLElement htmlElem;
mshtml.IHTMLElement htmlOffsetParent;
MyPosition position;
position.AbsoluteTop = htmlElem.offsetTop;
position.AbsoluteLeft = htmlElem.offsetLeft;
htmlOffsetParent = htmlElem.offsetParent;
htmlOffsetParent = htmlElem.offsetParent;
while（htmlOffsetParent！= null）
{
position.AbsoluteTop + = htmlOffsetParent.offsetTop;
position.AbsoluteLeft + = htmlOffsetParent.offsetLeft;
while (htmlOffsetParent != null)
{
position.AbsoluteTop += htmlOffsetParent.offsetTop;
position.AbsoluteLeft += htmlOffsetParent.offsetLeft;
htmlOffsetParent = htmlOffsetParent.offsetParent;
}
类MyPosition
{
公共Int32 AbsoluteTop;
公共Int32 AbsoluteLeft;
这项工作大多非常好，但有时结果接缝不正确。
例如：查询单词'的位置网页上的财务'（标题，而非链接）： http://www.gmtmag.com/en/ finance.php 导致'Left'值不正确。
这取决于浏览器的宽度，但左边的位置应该是上述链接'Innovations'附近的位置。但我的位置完全不同（左侧更多）。它的接缝类似于左侧的图片没有被考虑在内。
如何确定与元素可见相同的坐标？
非常感谢！
托马斯
htmlOffsetParent = htmlOffsetParent.offsetParent;
}
class MyPosition
{
public Int32 AbsoluteTop;
public Int32 AbsoluteLeft;
}
This work mostly very well, but sometime the result seams to be incorrect.
Example: Query for position of the word 'Finance' (title, not link) on Web Page: http://www.gmtmag.com/en/finance.php results in incorrect 'Left' value.
It depends on browser width, but the position left should be something near the above link 'Innovations'. But i get completely different position (more to the left side). It seams like the picture on the left side isn't taken into account.
How can i determine coordinates that results the same as the elements are visible ?
Many thanks !
Thomas
推荐答案
我正在努力实现与您相似的结果。如果你看一下这个msdn主题： http：/ /social.msdn.microsoft.com/forums/en-US/ieextensiondevelopment/thread/d96aa973-5847-41f4-adfa-fa00d444bc81/ 他们建议您使用IHTMLElement2 :: getBoundingClientRect [虽然，当我使用它时，它只返回0 - 可能是我平台的问题 - 谁知道！]。为了克服帧的问题，他们建议你使用IDiplayService :: TransformPoint（）。他们有步骤告诉你exaclty如何继续。最后，我建议您使用ClientToScreen（）将带有参考的点转换为屏幕。
I'm trying to achieve similar result as you are. If you look at this msdn thread: http://social.msdn.microsoft.com/forums/en-US/ieextensiondevelopment/thread/d96aa973-5847-41f4-adfa-fa00d444bc81/ they suggest you use IHTMLElement2::getBoundingClientRect [Although, when I used it, it only returned 0 - may be the problem with my platform-who knows!]. To overcome the problem of frames they suggest you use IDiplayService::TransformPoint(). They have steps telling you exaclty how to proceed. In the end, I suggest you use ClientToScreen() to convert the point with refrence to the screen.
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