RAD Studio VCL Reference
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TDateTime::-= Operator (TDateTime&)
TDateTime Class | TDateTime Members | System Namespace | Description
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Decrements the value of this System::TDateTime::TDateTime object by a specified value.

Pascal
operator -=(const rhs: TDateTimeBase&);
operator -=(const rhs: TDateTime&);
operator -=(const rhs: double);
operator -=(const rhs: Integer);
C++
__fastcall TDateTime& operator -=(const TDateTimeBase& rhs);
__fastcall TDateTime& operator -=(const TDateTime& rhs);
__fastcall TDateTime& operator -=(const double rhs);
__fastcall TDateTime& operator -=(const int rhs);
Description

Use the -= System::TDateTime::-= to subtract the value specified by rhs from this System::TDateTime::TDateTime value. The rhs operand represents the number of days (including fractional days) to subtract. 

 

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