Show or hide the window border at runtime. If the window has a caption (title) When the border is disabled, the caption will be disabled as well.
First available in version 3.0 build 2039.
flag - A true/false flag that determines whether the border will be visible or not. Valid values include: true and false.
No output parameters.
When this method is called synchronously, a return object containing the output parameters is returned to the caller immediately.