This message is sent to a window that is about to change its size or position.
A pointer to an instance of the class MinimumMaximumInformation. By changing the members of this class, an application can alter the default values specified in this structure.
If the window processes this message, it should return zero.
This message gives an application the opportunity to alter the default values for the window's maximized position and size and its maximum and minimum tracking widths and heights. The maximum tracking height is the maximum size that the window can achieve using its sizing borders. Likewise, the minimum tracking size is the minimum size the window can achieve using its sizing borders.