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IMcRegionAccessRefreshIfCast Method

Refreshes the image if it is based on another image and that image has changed.

Namespace:  MediaCy.IQL.Engine
Assembly:  MediaCy.IQL.Engine (in MediaCy.IQL.Engine.dll) Version: 10.0.6912.0
Syntax
VB
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Sub RefreshIfCast ( 
	Optional lLeft As Integer = -1,
	Optional lTop As Integer = -1,
	Optional lRight As Integer = -1,
	Optional lBottom As Integer = -1
)

Parameters

lLeft (Optional)
Type: SystemInt32
long : Optional. Left side of the block in region-relative coordinates (between 0 and Width-1). The default value of -1 is the same as 0. Out of bounds values are clipped to the bounds.
lTop (Optional)
Type: SystemInt32
long : Optional. Top side of the block in region-relative coordinates (between 0 and Height-1). The default value of -1 is the same as 0. Out of bounds values are clipped to the bounds.
lRight (Optional)
Type: SystemInt32
long : Optional. Right side of the block in region-relative coordinates (between 0 and Width-1). The default value of -1 is the same as Width-1. Out of bounds values are clipped to the bounds.
lBottom (Optional)
Type: SystemInt32
long : Optional. Bottom side of the block in region-relative coordinates (between 0 and Height-1). The default value of -1 is the same as Height-1. Out of bounds values are clipped to the bounds.
Remarks
The coordinate arguments are relative to the McRegionAccess ROI, not the image. Allows a client to respond to the Image Changed Notification to update this McRegionAccess instance to reflect the changes in the image. This is necessary, because McRegionAccess instances which are cast from the underlying image type (that is, they have a different McImageType) are not automatically refreshed when their base image is changed. This method has no effect if the McRegionAccess object is directly accessing the base image. If the image being accessed has been cast to an McImageType that is different from the base image, then this method will re-translate the base image pixels. CAUTION: The Image Changed Notification coordinates are relative to the base image. But methods within McRegionAccess, including this one, take coordinate arguments relative to the sub-region defined in the Initialize method.
See Also