IHTMLDocument2::get_parentWindow() fails

This is a discussion on IHTMLDocument2::get_parentWindow() fails within the Windows Programming forums, part of the Platform Specific Boards category; Hi. Don't know if this is the forum for COM related questions, but it still is Windows programming. I Tried ...

  1. #1
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    IHTMLDocument2::get_parentWindow() fails

    Hi. Don't know if this is the forum for COM related questions, but it still is Windows programming. I Tried to get the IHTMLWindow2 interface of an IHTMLDocument2 using get_parentWindow(), but the function crashed my application.

    Code:
    IHTMLWindow2 *parentWindow = NULL;
    //webBrowser is a valid IWebBrwoser2 obejct
    webBrowser->get_Document(&iDispatchDocument);
    
    iDispatchDocument->QueryInterface(IID_IHTMLDocument2, (void**)&htmlDocument);
    htmlDocument->get_parentWindow(&parentWindow);
    I am sure that htmlDocument is a valid pointer, since I can call its other functions (I can even get all the elements).

    What could be the cause for this crash? Thank you for any help.

  2. #2
    Registered User Codeplug's Avatar
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    Are you not checking HRESULT return values?

    Check for errors and look up the meaning of any error codes.

    gg

  3. #3
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    Thanks for your reply, but I can't check the return value of get_parentWindow, because the function doesn't return before crashing the application. webBrowser->get_Document and iDispatchDocument->QueryInterface both return S_OK.

  4. #4
    Registered User kimyat13's Avatar
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    were you able to solve this? i am really desperate for at least some information regarding my problem.

    a completely answered thread for this one would definitely help me out..

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