| GetLayeredWindowAttributes(IntPtr, UInt32, Byte, LayeredWindowAttributesFlags) | Retrieves the opacity and transparency color key of a layered window. |
| GetLayeredWindowAttributes(IntPtr, UInt32, Int32, LayeredWindowAttributesFlags) | Retrieves the opacity and transparency color key of a layered window. |
| GetLayeredWindowAttributes(SafeHandle, UInt32, Byte, LayeredWindowAttributesFlags) | Retrieves the opacity and transparency color key of a layered window. |
| GetLayeredWindowAttributes(SafeHandle, UInt32, Int32, LayeredWindowAttributesFlags) | Retrieves the opacity and transparency color key of a layered window. |