DevExpress: Can't click on a specific button

Hey everybody,

i try to access/click on a button which isn't recognised as a single button. It is an object which contains two buttons and the problem now is to tell testcomplete to click on the desired one. But when i use coordinates like this (for example):

var x = btn1["Top"] + 10;
var y = btn1["Left"] + 10;

btn1["Click"](x,y);

i always get the following error --> There was an attempt to perform an action at a point, which is beyond the screen.

During the test it also says 'Waiting for the window to be activated'.

Without coordinates i can access each element/object without any issues.

Don't know if it matters or not, but the button is within a window which pops up after selecting a certain option. But the window doesn't have a WndClass, so i supose it is not classified as an Unexpected Window, right?

So my question is: How can i access the specific button (the marked one in the attachment)?