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LEADTOOLS Raster imaging C++ Class library help

LAnnRuler::SetGaugeLength

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#include "ltwrappr.h"

virtual L_INT LAnnRuler::SetGaugeLength(dLength, uFlags=0)

L_DOUBLE dLength;

/* the new gauge length */

L_UINT uFlags;

/* flags that determine the object to process */

Sets the length of the gauge (the perpendicular lines at the ends of the Ruler object).

Parameter

Description

dLength

The new length of the ruler object's gauge.

uFlags

Flags that determine the object to process. You can combine values when appropriate by using a bitwise OR ( | ). The following are valid values:

 

Value

Meaning

 

0

Process only the specified object.

 

ANNFLAG_SELECTED

[0x0001] Process only objects that have the selected property set to TRUE. For getting and setting the selected property, use the LAnnotation::IsSelected and LAnnotation::SetSelected functions.

 

ANNFLAG_NOINVALIDATE

[0x0010] Do not invalidate the affected rectangle in the window. Use this to avoid generating unwanted paint messages.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

The gauge length property applies only to Automation, PolyRuler, and Ruler objects. Refer to Annotation Automation Object.

dLength is expressed in pixels, not in points. The length is for the whole line, not just from the end point of the ruler to the end point of the gauge - it is from one end of the gauge to the other end of the gauge.

Required DLLs and Libraries

LTANN

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64.

See Also

Functions:

Class Members, LAnnPolyRuler::GetDistance2, ANNSMARTDISTANCE, LAnnotation::CalibrateRuler

Topics:

Annotation Functions: Working with the Toolbar

 

Implementing Annotations

 

Automated User Interface for Annotations

 

Using Rulers in Annotation Objects

 

Calibrating Annotation Ruler Objects

Example

For an example, refer to LAnnRuler::GetGaugeLength.

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