2.3.5.4 EMR_CHORD Record

The EMR_CHORD record specifies a chord, which is a region bounded by the intersection of an ellipse and a line segment, called a secant. The chord is outlined by using the current pen and filled by using the current brush.


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Type

Size

Box

...

...

...

Start

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End

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Type (4 bytes): An unsigned integer that identifies this record type as EMR_CHORD. This value is 0x0000002E.

Size (4 bytes): An unsigned integer that specifies the size of this record in bytes.

Box (16 bytes): A RectL object ([MS-WMF] section 2.2.2.19), which specifies the inclusive-inclusive bounding rectangle in logical units.

Start (8 bytes): A PointL object ([MS-WMF] section 2.2.2.15), which specifies the coordinates, in logical units, of the endpoint of the radial defining the beginning of the chord.

End (8 bytes): A PointL object that specifies the logical coordinates of the endpoint of the radial defining the end of the chord.

The curve of the chord is defined by an ellipse that fits the specified bounding rectangle. The curve begins at the point where the ellipse intersects the first radial and extends counterclockwise to the point where the ellipse intersects the second radial. The chord is closed by drawing a line from the intersection of the first radial and the curve to the intersection of the second radial and the curve.

If the starting point and ending point of the curve are the same, a complete ellipse is drawn.

The current drawing position is neither used nor updated by processing this record.

See section 2.3.5 for more drawing record types.

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