Class CPrinterPort

class CPrinterPort : public CBase;

Description

Printer port interface.

This interface is used as the base class for the various types of printer port. New printer port classes should be derived from this class.After allocation and construction, a pointer to a concrete printer port should be passed to CPrintSetup::StartPrintL().

Derivation

• CBase - Base class for all classes to be instantiated on the heap.

• CPrinterPort - Printer port interface.

Members

Defined in CPrinterPort:

• Cancel()Cancels an outstanding CPrinterPort::WriteRequest(const TDesC8 &,TRequestSta...
• WriteRequest(const TDesC8 &,TRequestStatus &)Writes data asynchronously to the printer port.

Inherited from CBase:

• Delete(CBase *)Deletes the specified object.
• Extension_(TUint,TAny *&,TAny *)Extension function
• operator new(TUint)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TAny *)Initialises the object to binary zeroes.
• operator new(TUint,TLeave)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TLeave,TUint)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TUint)Allocates the object from the heap and then initialises its contents to binary z...

virtual void WriteRequest(const TDesC8 &aBuf, TRequestStatus &aRequestStatus)=0;

Description

Writes data asynchronously to the printer port.

Parameters

const TDesC8 &aBuf Data to be written to the port TRequestStatus &aRequestStatus A reference to the request status object. If the request is cancelled, this should be set to KErrCancel; if the request completes normally, this should be set to KErrNone.

virtual void Cancel()=0;

Description

Cancels an outstanding CPrinterPort::WriteRequest(const TDesC8 &,TRequestStatus &) operation.