Programming guideline of WinDom
There is an important remark to do here. When you use WindSet() and
WindGet() with the mode WF_WORKXYWH on a framed window descriptor,
these function compute the frame work area size and not the window
area size. Thus, WindGet( ..., WF_WORKXYWH, ...) is identical to
FrameCalc(). This feature allows us to use directly event function
initially written for window. So, prefined window, such as dialog
box, can be framed.