file:///F|/WinDDK/resources/CPPPrimer/c++primerhtm in Java

Print QR in Java file:///F|/WinDDK/resources/CPPPrimer/c++primerhtm
file:///F|/WinDDK/resources/CPPPrimer/c++primerhtm
QR-Code Generator In Java
Using Barcode drawer for Java Control to generate, create QR Code ISO/IEC18004 image in Java applications.
member access operator arrow If point is an object or a reference of some class type, the class is examined for an overloaded member access operator arrow If a member operator is not defined, the statement is in error since a class object or reference must ordinarily use the dot member access operator to refer to class members If an overloaded member access operator arrow is defined, it is bound to point and invoked The return type of an overloaded member access operator arrow must either be a pointer to a class type or an object of a class for which the member access operator arrow is defined If the return type is a pointer to class type, the semantics for the built-in member access operator arrow are then applied to the return value If the return value is another class object or reference, the process is applied recursively until either a pointer type is returned or the statement is in error For example, we can use the ScreenPtr object ps to access the members of class Screen as follows:
Bar Code Drawer In Java
Using Barcode creation for Java Control to generate, create barcode image in Java applications.
ps->move( 2, 3);
Reading Barcode In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
Because the left-hand operand of the member access operator arrow is of class type ScreenPtr, the overloaded operator of this class is used The operator returns a pointer to a Screen class object The built-in member access operator arrow is in turn applied to this return value to call to the member function move() of class Screen The following is a small program that exercises our ScreenPtr class The object of type ScreenPtr is used just like any object of type Screen*:
QR-Code Maker In Visual C#
Using Barcode maker for VS .NET Control to generate, create QR Code ISO/IEC18004 image in .NET framework applications.
#include <iostream> #include <string> #include "Screenh" void printScreen( ScreenPtr &ps ) { cout "Screen Object (" ps->height() ", " ps->width() " )\n\n"; for ( int ix = 1; ix <= ps->height(); ++ix ) { for ( int iy = 1; iy <= ps->width(); ++iy ) cout ps->get( ix, iy ); cout "\n"; } } int main() { Screen sobj( 2, 5 ); string init( "HelloWorld" ); ScreenPtr ps( sobj ); // Set the content of the screen string::size_type initpos = 0; for ( int ix = 1; ix <= ps->height(); ++ix ) for ( int iy = 1; iy <= ps->width(); ++iy ) { ps->move( ix, iy ); ps->set( init[ initpos++ ] ); } // Print the content of the screen printScreen( ps ); return 0; }
QR-Code Maker In VS .NET
Using Barcode maker for ASP.NET Control to generate, create QR Code image in ASP.NET applications.
file:///F|/WinDDK/resources/CPPPrimer/c++primerhtm (690 / 1065) [2001-3-29 11:32:11]
QR Code Generator In VS .NET
Using Barcode maker for VS .NET Control to generate, create QR Code ISO/IEC18004 image in Visual Studio .NET applications.
file:///F|/WinDDK/resources/CPPPrimer/c++primerhtm
Encode QR Code 2d Barcode In VB.NET
Using Barcode printer for Visual Studio .NET Control to generate, create Quick Response Code image in .NET applications.
Of course, this kind of manipulation of pointer to class objects is not as efficient as using the built-in pointer type The smart pointer class must therefore provide additional functionality that is important to the design of our application to justify the additional cost of using it
Code 128 Code Set B Generator In Java
Using Barcode drawer for Java Control to generate, create ANSI/AIM Code 128 image in Java applications.
Operators ++ and
Encoding EAN-13 In Java
Using Barcode drawer for Java Control to generate, create EAN 13 image in Java applications.
To continue the implementation of the ScreenPtr class introduced in the previous section, there are two other operators supported for the built-in pointer types that we would like to define for this class: the increment (++) and decrement ( ) operators We would like to be able to use our ScreenPtr class to refer to the elements of an array of Screen objects To do this we need to add some data members to our ScreenPtr class First we define a new data member called size that either contains the value zero (to indicate that the ScreenPtr object points to a single object) or contains the size of the array to which the ScreenPtr object refers We also define a data member called offset to remember the offset within the array to which the ScreenPtr object refers:
Code-39 Generator In Java
Using Barcode generator for Java Control to generate, create Code-39 image in Java applications.
class ScreenPtr { public: // private: int size; // size of the array; zero if single object int offset; // offset of ptr within the array Screen *ptr; };
EAN / UCC - 14 Generator In Java
Using Barcode creator for Java Control to generate, create EAN128 image in Java applications.
With this additional functionality and these new data members, we must modify the constructor of class ScreenPtr The user of our ScreenPtr class must provide an additional argument to the constructor if the ScreenPtr object created refers to an array:
Create Bar Code In Java
Using Barcode drawer for Java Control to generate, create barcode image in Java applications.
class ScreenPtr { public: ScreenPtr( Screen &s , int arraySize = 0 ) : ptr( &s ), size ( arraySize ), offset( 0 ) { } private: int size; int offset; Screen *ptr; };
EAN-8 Generator In Java
Using Barcode generator for Java Control to generate, create EAN8 image in Java applications.
The additional constructor argument indicates the size of the array To preserve the previous functionality, a default argument is provided for the constructor's second parameter to set the value of size to zero if a second argument is not provided when a ScreenPtr object is created In this case, it is assumed that the object refers to a single Screen object Objects of our new ScreenPtr class can be defined as follows:
Decoding Code 39 Full ASCII In .NET
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
Screen myScreen( 4, 4 ); ScreenPtr pobj( myScreen ); // ok: refers to single object const int arrSize = 10;
Barcode Reader In .NET
Using Barcode recognizer for VS .NET Control to read, scan read, scan image in VS .NET applications.
file:///F|/WinDDK/resources/CPPPrimer/c++primerhtm (691 / 1065) [2001-3-29 11:32:11]
Barcode Decoder In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
Creating Code 128 Code Set A In .NET Framework
Using Barcode printer for ASP.NET Control to generate, create Code 128 image in ASP.NET applications.
Data Matrix Generation In Visual Basic .NET
Using Barcode encoder for .NET framework Control to generate, create ECC200 image in .NET framework applications.