How to detect Window Location Change using Win32 API

Question

I have been developing an app. I want to check if window location is changed or not. I don't want to read always position of the window. Instead of it, I need a method which is triggered when the window is moved by user.

Is it possible to find it?

PS: The window is not on my program, its an external app and I use some API functions to control the window.

Answer 1

This is best done using WinEvents . The Event Constant to listen for is EVENT_OBJECT_LOCATIONCHANGE :

An object has changed location, shape, or size. The system sends this event for the following user interface elements: caret and window objects.