Constants

The following table lists constants in this documentation.

Name	Description
CompilerVersion	Designates the version number of the Delphi compiler.
CPUi386	This is constant System.CPUi386.
CPUi486	This is constant System.CPUi486.
CPUPentium	This is constant System.CPUPentium.
E_NOINTERFACE	This is constant System.E_NOINTERFACE.
E_NOTIMPL	This is constant System.E_NOTIMPL.
E_UNEXPECTED	This is constant System.E_UNEXPECTED.
fmClosed	This is constant System.fmClosed.
fmInOut	This is constant System.fmInOut.
fmInput	This is constant System.fmInput.
fmOutput	This is constant System.fmOutput.
MaxInt	The maximum value of the Integer data type.
MaxLongint	The maximum value of the Longint data type.
NumSmallBlockTypes	NumSmallBlockTypes is the number of small memory block types employed by the default memory manager.
opAdd	opAdd defines an addition operation.
opAnd	opAnd defines a logical and operation.
opCmpEQ	opCmpEQ defines an equality comparison operator.
opCmpGE	opCmpGE defines a greater than or equal comparison operator.
opCmpGT	opCmpGT defines a greater than comparison operator.
opCmpLE	opCmpLE defines a less than or equal comparison operator.
opCmpLT	opCmpLT defines a less than comparison operator.
opCmpNE	opCmpNE defines an inequality comparison operator.
opCompare	opCompare defines a comparison operation.
opDivide	opDivide defines a divide operation.
opIntDivide	opIntDivide defines an integer divide operation.
opModulus	opModulus defines a modulus operation.
opMultiply	opMultiply defines a multiply operation.
opNegate	opNegate defines a negate operation.
opNot	opNot defines a binary negation operation.
opOr	opOr defines a logical or operation.
opShiftLeft	opShiftLeft defines a bitwise shift left operation.
opShiftRight	opShiftRight defines a bitwise shift right operation.
opSubtract	opSubtract defines a subtraction operation.
opXor	opXor defines a logical exclusive or operation.
RTLVersion	Designates the version number of the Delphi runtime library.
S_FALSE	This is constant System.S_FALSE.
S_OK	This is constant System.S_OK.
sLineBreak	Represents the character(s) used to generate a line feed.
tfCRLF	This is constant System.tfCRLF.
varAny	Represents a Variant that can hold any value.
varArray	Represents a Variant that holds dynamic array data.
varBoolean	Represents a Variant that holds WordBool data.
varByRef	Represents a Variant that points to another variable.
varByte	Represents a Variant that holds byte data.
varCurrency	Represents a Variant that holds a monetary floating point value.
varDate	Represents a Variant that holds a TDateTime value.
varDispatch	Represents a Variant that has been assigned an IDispatch value.
varDouble	Represents a Variant that holds a floating point value.
varEmpty	Represents a Variant that has not yet been assigned a value.
varError	Represents a Variant that holds a 32 bit error code.
varInt64	Represents a Variant that holds Int64 data.
varInteger	Represents a Variant that holds Integer data.
varLongWord	Represents a Variant that holds LongWord data.
varNull	Represents a Variant that holds a null value.
varOleStr	Represents a Variant that has been assigned a COM interface type string value.
varShortInt	Represents a Variant that holds ShortInt data.
varSingle	Represents a Variant that holds byte data.
varSmallint	This is constant System.varSmallint.
varStrArg	Represents a Variant that has holds a COM compatible string value.
varString	Represents a Variant that holds string data.
varTypeMask	Defines a mask for filtering out the meta data part of a Variant data type.
varUnknown	Represents a Variant that holds an unknown value.
varVariant	Represents a Variant data type.
varWord	Represents a Variant that holds Word data.
vmtAddRef	This is constant System.vmtAddRef.
vmtAfterConstruction	This is constant System.vmtAfterConstruction.
vmtAutoTable	This is constant System.vmtAutoTable.
vmtBeforeDestruction	This is constant System.vmtBeforeDestruction.
vmtClassName	This is constant System.vmtClassName.
vmtCreateObject	This is constant System.vmtCreateObject.
vmtDefaultHandler	This is constant System.vmtDefaultHandler.
vmtDestroy	This is constant System.vmtDestroy.
vmtDispatch	This is constant System.vmtDispatch.
vmtDynamicTable	This is constant System.vmtDynamicTable.
vmtFieldTable	This is constant System.vmtFieldTable.
vmtFreeInstance	This is constant System.vmtFreeInstance.
vmtInitTable	This is constant System.vmtInitTable.
vmtInstanceSize	This is constant System.vmtInstanceSize.
vmtIntfTable	This is constant System.vmtIntfTable.
vmtMethodTable	This is constant System.vmtMethodTable.
vmtNewInstance	This is constant System.vmtNewInstance.
vmtParent	This is constant System.vmtParent.
vmtQueryInterface	This is constant System.vmtQueryInterface.
vmtRelease	This is constant System.vmtRelease.
vmtSafeCallException	This is constant System.vmtSafeCallException.
vmtSelfPtr	This is constant System.vmtSelfPtr.
vmtTypeInfo	This is constant System.vmtTypeInfo.
vtAnsiString	vtAnsiString defines an AnsiString TVarData VType value.
vtBoolean	vtBoolean defines a Boolean TVarData VType value.
vtChar	vtChar defines a Char TVarData VType value.
vtClass	vtClass defines a TClass TVarData VType value.
vtCurrency	vtCurrency defines a Currency TVarData VType value.
vtExtended	vtExtended defines an Extended TVarData VType value.
vtInt64	vtInt64 defines an Int64 TVarData VType value.
vtInteger	vtInteger defines an Integer TVarData VType value.
vtInterface	vtInterface defines an Interface pointer TVarData VType value.
vtObject	vtObject defines a TObject TVarData VType value.
vtPChar	vtPChar defines a PChar TVarData VType value.
vtPointer	vtPointer defines a Pointer TVarData VType value.
vtPWideChar	vtPWideChar defines a PWideChar TVarData VType value.
vtString	vtString defines a Variant TVarData VType value.
vtVariant	This is constant System.vtVariant.
vtWideChar	vtWideChar defines a WideChar TVarData VType value.
vtWideString	vtWideString defines a WideString TVarData VType value.

What do you think about this topic? Send feedback!