Contains information used in handling the $RBN_AUTOSIZE notification messages
Global Const $tagNMRBAUTOSIZE = $tagNMHDR & ";bool fChanged;" & _
	"struct; long TargetLeft;long TargetTop;long TargetRight;long TargetBottom; endstruct;" & _
	"struct; long ActualLeft;long ActualTop;long ActualRight;long ActualBottom; endstruct"
| $tagNMHDR | Contains information about a notification message | 
| fChanged | Member that indicates if the size or layout of the rebar control has changed (nonzero if a change occurred or zero otherwise) | 
| TargetLeft | Specifies the x-coordinate of the upper-left corner of the rectangle to which the rebar control tried to size itself | 
| TargetTop | Specifies the y-coordinate of the upper-left corner of the rectangle to which the rebar control tried to size itself | 
| TargetRight | Specifies the x-coordinate of the lower-right corner of the rectangle to which the rebar control tried to size itself | 
| TargetBottom | Specifies the y-coordinate of the lower-right corner of the rectangle to which the rebar control tried to size itself | 
| ActualLeft | Specifies the x-coordinate of the upper-left corner of the rectangle to which the rebar control actually sized itself | 
| ActualTop | Specifies the y-coordinate of the upper-left corner of the rectangle to which the rebar control actually sized itself | 
| ActualRight | Specifies the x-coordinate of the lower-right corner of the rectangle to which the rebar control actually sized itself | 
| ActualBottom | Specifies the y-coordinate of the lower-right corner of the rectangle to which the rebar control actually sized itself |