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⚠️ This file was converted from the EDGELIB 4.02 documentation from 2012 and is included for historic purposes. The documentation is not maintained anymore: information is outdated and external links might be broken.

The C++ source file

Helloworld.cpp

This file contains the code for a small test application which will display 'helloworld'. Create a folder: c:\projects\helloworld\code and add the following file:

helloworld.cpp (73 lines)

/////////////////////////////////////////////////////////////////////
// Code/helloworld.cpp
// One of the EDGELIB tutorial samples for Symbian
//
// Copyright (c) 2006-2017 Elements Interactive B.V.
// http://www.edgelib.com
//
// Show "hello world" on the screen and exit by tapping the screen or
// hitting a key
/////////////////////////////////////////////////////////////////////
 
/////////////////////////////////////////////////////////////////////
// Include and link the library                                    //
/////////////////////////////////////////////////////////////////////
 
//Include EDGELIB
#include "edgemain.h"
 
/////////////////////////////////////////////////////////////////////
// Class definition                                                //
/////////////////////////////////////////////////////////////////////
 
//The main class
class ClassMain : public ClassEdge
{
    public:
        ClassMain(void);
        ~ClassMain(void);
        ERESULT OnNextFrame(ClassEDisplay *display, unsigned long timedelta);
        void OnButtonDown(unsigned long bnr, EBUTTONLIST *blist);
        void OnStylusDown(POINT pnt);
};
 
 
/////////////////////////////////////////////////////////////////////
// ClassMain: public                                               //
/////////////////////////////////////////////////////////////////////
 
//ClassMain: constructor
ClassMain::ClassMain(void)
{
}
 
//ClassMain: destructor
ClassMain::~ClassMain(void)
{
}
 
//Callback: Called every frame
ERESULT ClassMain::OnNextFrame(ClassEDisplay *display, unsigned long timedelta)
{
    display->buffer.DrawFont(0, 0, &display->fontinternal, "Hello World!");
    return(E_OK);
}
 
//Callback: Called when the user pressed a key or button
void ClassMain::OnButtonDown(unsigned long bnr, EBUTTONLIST *blist)
{
    Quit();
}
 
//Callback: Called when the user points the stylus down or clicks the left mouse button
void ClassMain::OnStylusDown(POINT pnt)
{
    Quit();
}
 
 
/////////////////////////////////////////////////////////////////////
// The program entry point                                         //
/////////////////////////////////////////////////////////////////////
 
ClassEdge *EdgeMain(EDGESTARTUP *data){ return(new ClassMain); }

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