Contains constants and type definitions for Delphi compatibility

This unit is being created specifically for compatibility with Delphi. It should only be used for constants and type definitions that are included in the Delphi Windows unit. This is only done for compatibility

Returns the scollbar position.
If the scrollbar is not visible, then the return value is 0.
Returns true, if the rectangle is empty
IsEmptyRect returns true, if the area of the rectangle described by ARect is empty, i.e. right coordinate is less than or equal to the left coordinate, or the bottom coordinate is less than or equal to the top coordinate