SetFeatureClass

import os
import globalmapper as gm

i=0
import_dir = "Z:/GM-20069/vector_layer_editing_sample_data/"
# Close all layers that may be open
layers_are_open = gm.GetLoadedLayerList()
if layers_are_open:
    arr_ptr, arr_size = layers_are_open
    initial_layers = gm.GM_LayerHandle_array_frompointer(arr_ptr)
    for i in range(arr_size):
        gm.CloseLayer(initial_layers[i])

err_LoadLayerList, array_pointer, array_size_param = gm.LoadLayerList(
    os.path.join(import_dir, "area.shp"),
    gm.GM_LoadFlags_HideAllPrompts,
)

# Get handle for the loaded layers
arr_ptr, arr_size = gm.GetLoadedLayerList()
layer_arr = gm.GM_LayerHandle_array_frompointer(arr_ptr)

### START SAMPLE
err_SetFeatureClass = gm.SetFeatureClass(
    layer_arr[0], gm.GM_FeatureClass_Area, i, gm.AFC_BUILDING_ROOF
)

### END SAMPLE

assert (
    gm.GM_Error_None == err_LoadLayerList
), f"LoadLayerList: Expected {gm.GM_Error_None}, got {err_LoadLayerList}"
assert (
    gm.GM_Error_None == err_SetFeatureClass
), f"SetFeatureClass: Expected {gm.GM_Error_None}, got {err_SetFeatureClass}"

assert os.path.isdir(import_dir), f"Import directory doesn't exist: {import_dir}"

assert os.path.exists(
    os.path.join(import_dir, "area.shp")
), "Sample data doesn't exist"