ImageGear for C and C++ on Windows v21.0 - Updated
API Reference Guide / Core Component API Reference / Core Component Functions Reference / GUI Functions / GUI Magnify Functions / IG_GUI_magnify_window_create
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    IG_GUI_magnify_window_create
    In This Topic

    This function is called to create a GUI magnify window.

    Declaration:

     
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    AT_ERRCOUNT ACCUAPI IG_GUI_magnify_window_create (
        HIGEAR hIGear, 
        DWORD dwGrpID, 
        HWND hWndParent, 
        const LPSTR lpszTitle, 
        INT nX, 
        INT nY, 
        INT nWidth, 
        INT nHeight, 
        HWND FAR* lphWndMagnify
);

    Arguments:

    Name Type Description
    hIGear HIGEAR HIGEAR handle of image.
    DwGrpID DWORD Identifier of the group used for drawing image in the hWndParent window. A new group will be allocated internally for drawing image in the magnify window.
    hWndParent HWND Handle of Parent window.
    lpszTitle const LPSTR Title of Magnify Window.
    nX INT X position of upper left corner of Magnify window.
    nY INT Y position of upper left corner of Magnify window.
    nWidth INT Width of Magnify window.
    nHeight INT Height of Magnify window.
    lphWndMagnify HWND FAR* Far pointer to HWND object to hold Magnify window handle.

    Return Value:

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

    Supported Raster Image Formats:

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

    Sample:

    Magnify, Display, GUI Windows

    Example:

    See the example for function IG_GUI_magnify_track_mouse().

    Remarks:

    When the mouse is moved about in such a window with the left button held down, a small rectangle is dragged and the portion of the image inside the rectangle can be displayed (magnified) in the parent image window.

    See the IG_GUI_magnify_track_mouse() function.

     

     

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