timer.c

这是一个关于定时器的BREW的程序

/*===========================================================================

FILE: timer.c
===========================================================================*/


/*===============================================================================
INCLUDES AND VARIABLE DEFINITIONS
=============================================================================== */
#include "AEEModGen.h"          // Module interface definitions
#include "AEEAppGen.h"          // Applet interface definitions
#include "AEEShell.h"           // Shell interface definitions

#include "timer.bid"
#include "aeedisp.h"
#define NTIMES 250
#define EVT_TIMER (EVT_USER+1)



/*-------------------------------------------------------------------
Applet structure. All variables in here are reference via "pMe->"
-------------------------------------------------------------------*/
typedef struct _timer {
	AEEApplet      a ;	       // First element of this structure must be AEEApplet
    AEEDeviceInfo  DeviceInfo; // always have access to the hardware device information

    int x;
	int y;
	int cxScreen;
	int cyScreen;

} timer;

/*-------------------------------------------------------------------
Function Prototypes
-------------------------------------------------------------------*/
static  boolean timer_HandleEvent(timer* pMe, AEEEvent eCode, 
                                             uint16 wParam, uint32 dwParam);
boolean timer_InitAppData(timer* pMe);
void    timer_FreeAppData(timer* pMe);

/*===============================================================================
FUNCTION DEFINITIONS
=============================================================================== */
static void UPApp_Timer(timer* pMe)
{
	ISHELL_PostEvent(pMe->a.m_pIShell,AEECLSID_TIMER,EVT_TIMER, 0, 0);
}

/*===========================================================================
FUNCTION: AEEClsCreateInstance
===========================================================================*/
int AEEClsCreateInstance(AEECLSID ClsId, IShell *pIShell, IModule *po, void **ppObj)
{
	*ppObj = NULL;

	if( ClsId == AEECLSID_TIMER )
	{
		// Create the applet and make room for the applet structure
		if( AEEApplet_New(sizeof(timer),
                          ClsId,
                          pIShell,
                          po,
                          (IApplet**)ppObj,
                          (AEEHANDLER)timer_HandleEvent,
                          (PFNFREEAPPDATA)timer_FreeAppData) ) // the FreeAppData function is called after sending EVT_APP_STOP to the HandleEvent function
                          
		{
			//Initialize applet data, this is called before sending EVT_APP_START
            // to the HandleEvent function
			if(timer_InitAppData((timer*)*ppObj))
			{
				//Data initialized successfully
				return(AEE_SUCCESS);
			}
			else
			{
				//Release the applet. This will free the memory allocated for the applet when
				// AEEApplet_New was called.
				IAPPLET_Release((IApplet*)*ppObj);
				return EFAILED;
			}

        } // end AEEApplet_New

    }

	return(EFAILED);
}


/*===========================================================================
FUNCTION SampleAppWizard_HandleEvent
===========================================================================*/
static boolean timer_HandleEvent(timer* pMe, AEEEvent eCode, uint16 wParam, uint32 dwParam)
{  

	AEERect rc;

    switch (eCode) 
	{
        // App is told it is starting up
        case EVT_APP_START:                        
		    ISHELL_GetDeviceInfo(pMe->a.m_pIShell, &pMe->DeviceInfo);
			pMe->x=0;
			pMe->y=0;
			pMe->cxScreen=pMe->DeviceInfo.cxScreen;
			pMe->cyScreen=pMe->DeviceInfo.cyScreen;
			SETAEERECT(&rc,pMe->x,pMe->y,8,8);
			IDISPLAY_DrawRect(pMe->a.m_pIDisplay,&rc,0xff000000,0x00ff0000,IDF_RECT_FRAME|IDF_RECT_FILL);
			IDISPLAY_Update(pMe->a.m_pIDisplay);
			ISHELL_SetTimer(pMe->a.m_pIShell, NTIMES, (PFNNOTIFY )UPApp_Timer, pMe);
            return(TRUE);

			//App is told it is timer
		case EVT_TIMER:
			SETAEERECT(&rc,pMe->x,pMe->y,8,8);
			IDISPLAY_DrawRect(pMe->a.m_pIDisplay,&rc,0xffffff00,0xffffff00,IDF_RECT_FRAME|IDF_RECT_FILL);
			pMe->x = (pMe->x+4)%(pMe->cxScreen - 8);
			pMe->y = (pMe->y+4)%(pMe->cyScreen - 8);
			SETAEERECT(&rc,pMe->x,pMe->y,8,8);
			IDISPLAY_DrawRect(pMe->a.m_pIDisplay,&rc,0xff000000,0x00ff0000,IDF_RECT_FRAME|IDF_RECT_FILL);
			IDISPLAY_Update (pMe->a.m_pIDisplay);
			ISHELL_SetTimer(pMe->a.m_pIShell, NTIMES, (PFNNOTIFY )UPApp_Timer, pMe);
			return (TRUE);

        // App is told it is exiting
        case EVT_APP_STOP:
           ISHELL_CancelTimer(pMe->a.m_pIShell, (PFNNOTIFY )UPApp_Timer, pMe);

      		return(TRUE);


        // App is being suspended 
        case EVT_APP_SUSPEND:
		    // Add your code here...

      		return(TRUE);


        // App is being resumed
        case EVT_APP_RESUME:
		    // Add your code here...

      		return(TRUE);


        // An SMS message has arrived for this app. Message is in the dwParam above as (char *)
        // sender simply uses this format "//BREW:ClassId:Message", example //BREW:0x00000001:Hello World
        case EVT_APP_MESSAGE:
		    // Add your code here...

      		return(TRUE);

        // A key was pressed. Look at the wParam above to see which key was pressed. The key
        // codes are in AEEVCodes.h. Example "AVK_1" means that the "1" key was pressed.
        case EVT_KEY:
		    // Add your code here...

      		return(TRUE);


        // If nothing fits up to this point then we'll just break out
        default:
            break;
   }

   return FALSE;
}


// this function is called when your application is starting up
boolean timer_InitAppData(timer* pMe)
{
    // Get the device information for this handset.
    // Reference all the data by looking at the pMe->DeviceInfo structure
    // Check the API reference guide for all the handy device info you can get
    pMe->DeviceInfo.wStructSize = sizeof(pMe->DeviceInfo);
    ISHELL_GetDeviceInfo(pMe->a.m_pIShell,&pMe->DeviceInfo);

    // Insert your code here for initializing or allocating resources...



    // if there have been no failures up to this point then return success
    return TRUE;
}

// this function is called when your application is exiting
void timer_FreeAppData(timer* pMe)
{
    // insert your code here for freeing any resources you have allocated...

    // example to use for releasing each interface:
    // if ( pMe->pIMenuCtl != NULL )         // check for NULL first
    // {
    //    IMENUCTL_Release(pMe->pIMenuCtl)   // release the interface
    //    pMe->pIMenuCtl = NULL;             // set to NULL so no problems trying to free later
    // }
    //

}