cplmemory.cpp

The sample provided here is a simple control panel application that will just display the memory usa

// CPLMemory.cpp : Defines the initialization routines for the DLL.
//

#include "stdafx.h"
#include "CPLMemory.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

//
//TODO: If this DLL is dynamically linked against the MFC DLLs,
//		any functions exported from this DLL which call into
//		MFC must have the AFX_MANAGE_STATE macro added at the
//		very beginning of the function.
//
//		For example:
//
//		extern "C" BOOL PASCAL EXPORT ExportedFunction()
//		{
//			AFX_MANAGE_STATE(AfxGetStaticModuleState());
//			// normal function body here
//		}
//
//		It is very important that this macro appear in each
//		function, prior to any calls into MFC.  This means that
//		it must appear as the first statement within the 
//		function, even before any object variable declarations
//		as their constructors may generate calls into the MFC
//		DLL.
//
//		Please see MFC Technical Notes 33 and 58 for additional
//		details.
//


// CCPLMemoryApp

BEGIN_MESSAGE_MAP(CCPLMemoryApp, CWinApp)
END_MESSAGE_MAP()


// CCPLMemoryApp construction

CCPLMemoryApp::CCPLMemoryApp()
{
	// TODO: add construction code here,
	// Place all significant initialization in InitInstance
}


// The one and only CCPLMemoryApp object

CCPLMemoryApp theApp;


// CCPLMemoryApp initialization

BOOL CCPLMemoryApp::InitInstance()
{
	CWinApp::InitInstance();

	return TRUE;
}

LONG APIENTRY CPlApplet(HWND hWndCPL,UINT uMessage,LPARAM lParam1,LPARAM lParam2)
{
	LONG	nReturn	= 0;

	switch(uMessage)
	{
		case CPL_INIT:
		{
			nReturn	= 1;

			break;
		}
		case CPL_GETCOUNT:
		{
			nReturn	= 1;

			break;
		}
		case CPL_NEWINQUIRE:
		{
			LPNEWCPLINFO	pInfo	= (LPNEWCPLINFO)lParam2;

			pInfo->dwFlags			= 0;
			pInfo->dwHelpContext	= 0;
			pInfo->dwSize			= sizeof(NEWCPLINFO);
			pInfo->lData			= IDI_ICON;
			pInfo->hIcon			= theApp.LoadIconW(IDI_ICON);
			
			lstrcpy(pInfo->szInfo,TEXT("Sample control panel applet"));
			lstrcpy(pInfo->szName,TEXT("CPLMem"));
			
			pInfo->szHelpFile[0]	= '\0';

			break;
		}
		case CPL_DBLCLK:
		{
			MEMORYSTATUS	mem	= {sizeof(MEMORYSTATUS)};

			GlobalMemoryStatus(&mem);

			CString			strInfo;

			strInfo.Format(TEXT("Memory Usage: %d%%"),mem.dwMemoryLoad);

			AfxMessageBox(strInfo);


			nReturn	= 0;

			break;
		}
		case CPL_STOP:
		{
			break;
		}
		case CPL_EXIT:
		{
			break;
		}
	}

	return nReturn;
}