globalmapper.MapCatalogSetDisplayInfo
=====================================

.. currentmodule:: globalmapper
.. py:function:: MapCatalogSetDisplayInfo (GM_LayerHandle_t32 aCatalogLayer, GM_MapCatalogDisplayType_t8 aDisplayType, float aDisplayValue, float aDisplayValue2, bool aHideBounds) -> GM_Error_t32

    Sets when the layers in a map catalog should be displayed. The *aDisplayValue* and *aDisplayValue2* parameters have
    the following meanings based on the value of *aDisplayType*:

    -   **GM_MapCatalog_DisplayTypePercent** - *aDisplayValue* is percent of view window that a layer has to take up
        before it is shown
    -   **GM_MapCatalog_DisplayTypePixelSize** - *aDisplayValue* is the size in meters that a single pixel in the
        display window should be before any layers are displayed
    -   **GM_MapCatalog_DisplayTypeScale** - *aDisplayValue* is the denominator of the scale value (e.g. 100000.0 for
        1:100K). Layers in the catalog will be drawn whenever the calculated scale value for the draw window is at or
        below the specified value.
    -   **GM_MapCatalog_DisplayTypeScaleRange** - *aDisplayValue* and *aDisplayValue2* specify a range of scales between
        which to draw the layers in the catalog. For example, to draw the layers when the scale for the draw window is
        between 1:50K and 1:250K, use values of 50000.0 and 250000.0.

    :param GM_LayerHandle_t32 aCatalogLayer: Handle to map catalog layer (either from loading or CreateMapCatalog)
    :param GM_MapCatalogDisplayType_t8 aDisplayType: Controls when layers in catalog are displayed
    :param float aDisplayValue: First value related to display type
    :param float aDisplayValue2: Optional second value for range of scales (use 0.0 if doesn't apply)
    :param bool aHideBounds: Hide layer bounds when not drawing a layer?
    :returns: Error Code
    :rtype: GM_Error_t32