Temperature Convert：An XML Web service Using ATL Server and MFC Client

// TempConvert.h : Defines the ATL Server request handler class
//
#pragma once

namespace TempConvertService
{
// all struct, enum, and typedefs for your webservice should go inside the namespace

// ITempConvertService - web service interface declaration
//
[
	uuid("0A38DB02-B685-403A-B302-12A8B393D74D"), 
	object
]
__interface ITempConvertService
{
	// declare a web service method and its in-parameters and out-parameters
    //Convert Fahrenheit to Celsius
	[id(1)] HRESULT ConTempFah2Cel(
     [in] double dFahrenheit,
     [out, retval] double* pdCelsius);
	//Convert Celsius to Fahrenheit
	[id(2)] HRESULT ConTempCel2Fah(
     [in] double dCelsius,
     [out, retval] double* pdFahrenheit);
};


// TempConvertService - web service implementation
//
[
	request_handler(name="Default", sdl="GenTempConvertWSDL"),
	soap_handler(
		name="TempConvertService", 
		namespace="urn:TempConvertService",
		protocol="soap"
	)
]
class CTempConvertService :
	public ITempConvertService
{
public:
	// This is a sample web service method that shows how to use the 
	// soap_method attribute to expose a method as a web method
	[ soap_method ]
	HRESULT ConTempFah2Cel(
    /* [in]*/ double dFahrenheit,
    /* [out, retval] */ double* pdCelsius)
	{
		if(!pdCelsius)
			return E_INVALIDARG;

		*pdCelsius=((dFahrenheit-32)*5)/9;
		return S_OK;
	}
	
	[ soap_method ]
	HRESULT ConTempCel2Fah(
    /* [in]*/ double dCelsius,
    /* [out, retval] */ double* pdFahrenheit)
	{
		if(!pdFahrenheit)
			return E_INVALIDARG;

		*pdFahrenheit=dCelsius*9/5+32;
		return S_OK;
	}
}; // class CTempConvertService

} // namespace TempConvertService