On the CM forum, Rosslcs asked how to centre an image in a window.
I posted a test program but here is a slightly more accurate version that obtains the window caption height using the GetSystemMetrics API routine.
In my CM post, I guessed the height as 20 pixels - GetSystemMetrics reports it as 19 pixels .. ::)
I'll include a zip file with a test image so you can try it out .. :)
all the best, :)