ImageGear for C and C++ on Windows v21.0 - Updated
API Reference Guide / Core Component API Reference / Core Component Callback Functions Reference / LPFNIG_GUITHUMBCREATE
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    LPFNIG_GUITHUMBCREATE
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    This function is called when the user appends a thumbnail in the window hWndThumbnail.

    Declaration:

     
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    typedef VOID (ACCUAPI LPFNIG_GUITHUMBCREATE) (
            LPVOID lpPrivate, 
            HWND hWndThumbnail, 
            UINT nIndex
    );
    

    Arguments:

    Name Type Description
    lpPrivate LPVOID Far pointer to the private data that was passed.
    hWndThumbnail HWND Thumbnail window handle.
    nIndex UINT Index of a thumbnail icon.

    Return Value:

    None

    Supported Raster Image Formats:

    This function does not process image pixels.

    Sample:

    None

    Remarks:

    This type of callback function is registered by a call to IG_GUI_thumbnail_create_CB_register().