OVERLAYATTRIBUTES

The OVERLAYATTRIBUTES structure contains overlay attributes. Each overlay is a 1-bit image. The attributes are stored as member variable or flags inside uFlags member.

Member Data Type Description
uStructSize L_UINT
 The size of the structure (use sizeof (OVERLAYATTRIBUTES) )
ptOrigin POINT Origin (top left point), in pixels, of the overlay bitmap, relative to the top left point of the displayed main bitmap. This is independent of the main bitmaps view perspective.
crColor COLORREF The color used to display those pixels in the overlay bitmap with a value of 1.
uFlags L_UINT
 One or more of the following flags:
    OVERLAY_AUTOPAINT [0x00000001] Paint the overlay automatically when the bitmap is painted using LPaint::PaintDC functions.
    OVERLAY_AUTOPROCESS [0x00000002] Automatically adjust the overlay bitmap and position when the main bitmap is resized (zoomed in), scrolled, rotated, flipped, reversed, sheared, trimmed.
    OVERLAY_USEBITPLANE [0x00000004] the overlay has a corresponding bitplane in the main bitmap. uBitPosition is the index bitplane.
uBitPosition L_UINT16
 Corresponding bit plane associated with an overlay. Valid only if OVERLAY_USEBITPLANE is set in uFlags. For more information about the bit position, refer to "Overlay Plane Module Attributes" in the DICOM standard.
uRows L_UINT16
 Number of rows in the overlay. For more information, refer to "Overlay Plane Module Attributes" in the DICOM standard.
uColumns L_UINT16
 Number of columns in the overlay. For more information, refer to "Overlay Plane Module Attributes" in the DICOM standard.
szType L_CHAR
 A null-terminated string that indicates whether this overlay represents a region of interest or other graphics. For more information, refer to "Overlay Plane Module Attributes" in the DICOM standard.
uBitsAllocated L_UINT16
 Number of bits allocated in the overlay. For more information, refer to "Overlay Plane Module Attributes" in the DICOM standard.
szDescription L_CHAR
 NULL terminated string that contains user-defined comments about the overlay. For more information, refer to "Overlay Plane Module Attributes" in the DICOM standard.
szSubtype L_CHAR
 NULL terminated string that contains a defined term that identifies the intended purpose of the overlay type. For more information on possible values, refer to "Overlay Plane Module Attributes" in the DICOM standard.
szLabel L_CHAR
 NULL terminated string that contains user defined text, which may be used to label or name this overlay. For more information, refer to "Overlay Plane Module Attributes" in the DICOM standard.
nROIArea L_INT32
 Number of pixels in the Region Of Interest area. For more information, refer to "Overlay Plane Module Attributes" in the DICOM standard.
fROIMean L_DOUBLE
 Average value of the pixels in the Region Of Interest. For more information, refer to "Overlay Plane Module Attributes" in the DICOM standard.
fROIStandardDeviation L_DOUBLE
 The standard deviation of the pixel values in the Region Of Interest. For more information, refer to "Overlay Plane Module Attributes" in the DICOM standard.
nNumFramesInOverlay L_INT32
 Number of Frames in the overlay. For more information, refer to "Multi-frame Overlay Module Attributes" in the DICOM standard.
uImageFrameOrigin L_UINT16
 The number of the frame of a multi-frame image to which this overlay applies. For more information, refer to "Multi-frame Overlay Module Attributes" in the DICOM standard.
szActivationLayer L_CHAR
 NULL terminated string that identifies the layer in which the overlay shall be displayed. For more information, refer to "Overlay/Curve Activation Module Attributes" in the DICOM standard.
Help Version 20.0.2020.4.5
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2020 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Raster Imaging C++ Class Library Help
Introduction
Version History
Getting Started
LEADTOOLS Raster Imaging Features
Redistributables/Files To Be Included With Your Application
Quick Reference
Tutorials
Classes and Member Functions
Summary of Features