如何在 IE9 中重绘/重绘指向 DOM 中图像元素的 IHTMLElement？

发布于 2024-11-01 00:24:22 字数 460 浏览 4 评论 0原文

我有一个有效的 IHTMLElement 对象，它指向 IE9 中的图像。图像数据最近通过IDirectDrawSurface更新。我正在尝试找到一种方法来强制 IE9 在更新图像数据后重新绘制 DOM 中的图像。谁能指导我一种强制重新绘制以这种方式更新的图像的方法？

我尝试过的方法：

HRESULT ret = pElement->get_style(&pStyle);
pStyle->put_visibility(L"hidden");
pStyle->put_visibility(L"visible");
// Or
pStyle->put_display(L"none");
pStyle->put_display(L"block");

感谢您的宝贵时间，任何提示将不胜感激。

-将要

原文

I've got a valid IHTMLElement object that points to an image in IE9. The image data was recently updated via an IDirectDrawSurface. I'm trying to find a way to force IE9 to repaint the image in the DOM after I update the image data. Could anyone please direct me to a method of forcing a repaint of an image that has been updated in this fasion?

Approaches I've tried:

HRESULT ret = pElement->get_style(&pStyle);
pStyle->put_visibility(L"hidden");
pStyle->put_visibility(L"visible");
// Or
pStyle->put_display(L"none");
pStyle->put_display(L"block");

Thanks for your time, and any tips would be greatly appreciated.

-Will

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怪我闹别瞎闹 2024-11-08 00:24:22

您是否尝试过重置元素的 src ？据我所知，如果您设置已经存在的相同 src，IE 将不会执行任何操作，但看起来它可能会被欺骗；

    IHTMLImgElement pImg;
    m_pElement->QueryInterface(IID_IHTMLImgElement, (void**)(&pImg));
    _bstr_t bstrOriginalSrc;
    pImg->get_src(bstrOriginalSrc.GetAddress());
    pImg->put_src(L""); //Trick to avoid setting the same src as already present
    pImg->put_src(bstrOriginalSrc);

Have you tried resetting the src of the element? From what I can see, IE won't do anything if you set the same src that is already present, but looks like it can be tricked;

    IHTMLImgElement pImg;
    m_pElement->QueryInterface(IID_IHTMLImgElement, (void**)(&pImg));
    _bstr_t bstrOriginalSrc;
    pImg->get_src(bstrOriginalSrc.GetAddress());
    pImg->put_src(L""); //Trick to avoid setting the same src as already present
    pImg->put_src(bstrOriginalSrc);

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