RAD Studio VCL Reference
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TConvTypeProcs.ToCommon Method

Converts measurements in the units represented by this conversion type to the base units of the conversion family.

Pascal
function ToCommon(const AValue: Double): Double; override;
C++
virtual __fastcall Double ToCommon(const Double AValue);

ToCommon provides part of the underlying implementation of the global Convert function. In order to convert a measurement from one set of units to another, Convert calls the ToCommon method of the source conversion type's TConvTypeProcs instance to obtain the measurement in the base units of the conversion family, and then calls the ToCommon method of the destination conversion type's TConvTypeProcs instance to obtain the measurement in the destination units. 

AValue is a value expressed in the units represented by this conversion type. 

ToCommon executes the AToCommonProc function that was supplied to the constructor. 

 

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