#include "ltwrappr.h"

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

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


L_DOUBLE dLength

The new length of the ruler object's gauge.

L_UINT 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.


Value Meaning
SUCCESS The function was successful.
< 1 An error occurred. Refer to Return Codes.


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


Win32, x64.

See Also




For an example, refer to LAnnRuler::GetGaugeLength.

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