ImageGear for C and C++ on Windows v21.0 - Updated
API Reference Guide / ART Component API Reference / ART Component Callback Functions Reference / LPFNIG_ART_MODIFYNOTIFYFUNC
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    LPFNIG_ART_MODIFYNOTIFYFUNC
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    This function is called after a mark has been modified (moved, resized, or edited).

    Declaration:

     
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    typedef VOID (ACCUAPI *LPFNIG_ART_MODIFYNOTIFYFUNC)(
            HIGEAR hIGear, 
            LPVOID lpPrivate, 
            ART_MARK_INDEX hMarkIndex, 
            const LPART_MARK_ATTRIBUTES lpMarkAttr, 
            AT_MODE nReason
    );
    

    Arguments:

    Name Type Description
    hIGear HIGEAR HIGEAR handle to the image.
    lpPrivate LPVOID A far pointer to the private callback data.
    hMarkIndex ART_MARK_INDEX The index of the mark just modified.
    lpMarkAttr const LPART_MARK_ATTRIBUTES A far pointer to an ART-defined structure of type ART_MARK_ATTRIBUTES.
    nReason AT_MODE An integer constant of type AT_MODE, defined in ARTAPI.H. This tells what caused the callback to be called.

    Return Value:

    Returns the number of ImageGear errors that occurred during the function call.

    Supported Raster Image Formats:

    All pixel formats supported by ImageGear for C and C++.

    Sample:

    None

    Example:

     
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    VOID ACCUAPI ARTModifyNotify( HIGEAR hIGear, LPVOID 
    lpPrivate, ART_MARK_INDEX hMarkIndex, 
    const LPART_MARK_ATTRIBUTES lpMarkAttr, 
    AT_MODE nReason)
    {
    switch (nReason)
    {
    case ART_MODIFY_ATTRIBUTES:
    /* indicate to the user that the highlight */ 
    /* attribute was changed */
        if (lpMarkAttr->bHighlighting)
    MessageBox(HWND_DESKTOP, "The mark is "
    "highlighted", NULL, MB_OK);
    }
    }
    

    Remarks:

    In order to use this callback, it must be registered with ART using the function ART_callback_register().

    Upon entry, nReason is set to a constant indicating what triggered the modification. Your application displays one of the library's standard editing dialog boxes. Here is the list of "reasons" why this callback will be called:

    ART_MODIFY_ATTRIBUTES One or more attributes have been modified (from the ART_MARK_ATTRIBUTES structure).
    ART_MODIFY_ANODAT A named block specific to this type of mark was modified.
    ART_MODIFY_FILNAM The filename block was modified.
    ART_MODIFY_DIB The embedded DIB was changed.
    ART_MODIFY_GROUP The mark's group block was modified.
    ART_MODIFY_INDEX The mark's index block was changed.
    ART_MODIFY_ANTEXT The orientation or length of text mark have been modified.
    ART_MODIFY_NAMED_BLOCK A user-defined named block was modified.