messagebox position control

I've been toyin around with a .net messagebox but I've came into the same problem where there's no way to position the messagebox.

struct ST_customMessageBox
(
	fn fn_dotNetMsgBox caption:"Default Caption" msg:"Default Message" iconType:#None buttonType:#YesNoCancel =
	(
		mb = DotNetClass "MessageBox"
		icon = (execute("(DotNetClass \"MessageBoxIcon\")." + iconType))
		button = (execute("(DotNetClass \"MessageBoxButtons\")." + buttonType))
		result = mb.show msg caption button icon
		)
	)

customMessageBox = ST_customMessageBox()

answer = customMessageBox.fn_dotNetMsgBox caption:"Caption you would like ?" msg:"Message goes here .\n\n2nd line goes here ." iconType:#Question buttonType:#YesNoCancel

if answer == "Yes" then format "Yes pressed\n"
if answer == "No" then format "No pressed\n"
if answer == "Cancel" then format "Cancel pressed\n"

Would there be any good examples of such? It would be nice to have it as a function so I could control the contents, title etc.

It will be a regular rollout where you can put labels to show text, images, etc. Put the creation of the rollout in a function and pass the parameters that you want.

Why not use your own messagebox? You can set its position, size, color, etc.