examples/Basics/ExtensionPattern/src_extensionclient/ExtensionClient.cpp

/*
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  list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
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  may be used to endorse or promote products derived from this software
  without specific prior written permission.

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Description:
Implements a simple console application to use functionality from both OriginalDll
and the ExtensionDll
Should work without rebuild for both versions of OriginalDll & ExtensionDll  
*/



#include <e32base.h>
#include <e32cons.h>
#include <NumberStore.h>

_LIT(KHello,"Hello World!\r\n"); 
_LIT(KTxtEPOC32EX,"EPOC32EX");
_LIT(KTxtExampleCode,"Symbian platform Example Code");
_LIT(KFormatFailed,"failed: leave code=%d");
_LIT(KTxtOK,"ok");
_LIT(KTxtPressAnyKey," [press any key]");

LOCAL_D CConsoleBase* console;
LOCAL_C void callExampleL(); 
LOCAL_C void doExampleL(); 

GLDEF_C TInt E32Main()
    {
        __UHEAP_MARK;
        CTrapCleanup* cleanup=CTrapCleanup::New(); 
        TRAPD(error,callExampleL()); 
        __ASSERT_ALWAYS(!error,User::Panic(KTxtEPOC32EX,error));
        delete cleanup; 
        __UHEAP_MARKEND;
        return 0; 
    }

LOCAL_C void callExampleL()
    {
        console=Console::NewL(KTxtExampleCode,TSize(KConsFullScreen,KConsFullScreen));
        CleanupStack::PushL(console);
        TRAPD(error,doExampleL()); 
        if (error)
                console->Printf(KFormatFailed, error);
        else
                console->Printf(KTxtOK);
        console->Printf(KTxtPressAnyKey);
        console->Getch(); 
        CleanupStack::PopAndDestroy();
    }
    
LOCAL_C void doExampleL()
    {
        console->Printf(KHello);
        TInt num1=3;
        TInt num2=7;

        //Create & initialise the number store using original functionality
        CNumberStore* numberstore=new (ELeave) CNumberStore();
        numberstore->SetNumber1(num1);
        numberstore->SetNumber2(num2);
        console->Printf(_L("Created CNumberStore with values %d & %d\n"),num1,num2);
        num1=numberstore->Number1();
        num2=numberstore->Number2();
        console->Printf(_L("CNumberStore has values %d & %d\n"),num1,num2);

        TInt total=-1;
        TInt product=-1;
        
        //Use extension functionality

        //The following line will work as expected, using the implementation in the extension dll
        total=numberstore->AddNumbers();

        //The following line will fail to compile, as it attempts to call a private function
        //product=numberstore->DoMultiplyNumbers();

        //The following line will work as expected, using the implementation in the extension dll
        product=numberstore->MultiplyNumbers();

        console->Printf(_L("CNumberStore extension gives total %d\n"),total);
        console->Printf(_L("CNumberStore extension gives product with magic multiplyer %d\n"),product);


        delete numberstore;
        }

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