private void PopulatePropertyInfo()
{
if (m_properties.Count == 0)
{
// Need to actually fetch properties
// Start with getting a list of all the properties
UInt32 count = 0;
// Get # of properties
UInt32 hr = GetPropertyList(m_handle, IntPtr.Zero, ref count);
int[] ids = new int[count];
IntPtr pIds = Marshal.AllocCoTaskMem((int)count * sizeof(UInt32));
hr = GetPropertyList(m_handle, pIds, ref count);
Marshal.Copy(pIds, ids, 0, (int)count);
Marshal.FreeCoTaskMem(pIds);
// Now I want the property descriptors
for (int i = 0; i < count; i++)
{
PropertyDescriptor descriptor = new PropertyDescriptor();
hr = GetPropertyDescriptor(m_handle, (uint)ids[i], ref descriptor);
PropertyValueOption[] options = new PropertyValueOption[descriptor.ValueCount];
for (uint index = 0; index < descriptor.ValueCount; index++)
{
GetPropertyValueOption(m_handle, descriptor.Id, ref options[index], index);
// UInt32 countReturned = descriptor.ValueCount;
// GetPropertyValueOptions(m_handle, descriptor.Id, ref options, ref countReturned);
}
m_properties[descriptor.Id] = new CameraProperty(descriptor, options);
}
}
}
protected static extern UInt32 GetPropertyValueOption(UInt32 hCamera, UInt32 propertyId, ref PropertyValueOption option, UInt32 index);
