Modifies layer in selected CAD dataLTCustomizer21 for AutoCAD LT reference manual

ActiveX
    Function set_select_layer(ename As Integer, layer As String) As Boolean
C/C++
    int WINAPI LTC_set_select_layer(int ename,const wchar_t *layer);

parameter
ename:index number. Specifies a value in range of 0 - return value of select() -1.
layer :layer name

return value
ActiveX: True: success. False: failure
C/C++: 1: success. 0:failure

This function is equal to following code.
set_select_data(ename,8,layer)