SwitchMap: Change the map

Classes
struct	RI_CSwitchMap
	Data structure for the Request "SwitchMap". More...

Functions
LRESULT	RI_SwitchMap_ReadData (LPARAM, RI_CSwitchMap &)
	Read data from shared memory for "switch map".
LRESULT	RI_SwitchMap_WriteData (LPARAM, RI_CSwitchMap &)
	Write data to shared memory for "switch map".

Variables
const UINT	RI_MESSAGE_SWITCHMAP = RegisterWindowMessage(TEXT("RI_MESSAGE_SWITCHMAP"))

Detailed Description

Variable Documentation

const UINT RI_MESSAGE_SWITCHMAP = RegisterWindowMessage(TEXT("RI_MESSAGE_SWITCHMAP"))

Message ID for the Request "SwitchMap":
RI_MESSAGE_SWITCHMAP

Write Memory:

RI_SwitchMap_WriteData(LPARAM id, RI_CSwitchMap data );

Read Memory:

RI_SwitchMap_ReadData(LPARAM id, RI_CSwitchMap data );

Return Values for SwitchMap:

RI_NOERROR = SwitchMap succeeded
RI_NOTADDED = Switch Map not succeeded, because no map found

Description:

Switches the map to the given one. If the map doesn't exist, returns an error. Also returns the available maps as a string list.

Returns a single package

Example:

#define USE_LOADLIBRARY
#include "TNSRemoteInterfaceDll.h"

LPARAM GetUniqueID()
{
    //generate unique ID
    static LPARAM id = 0;
    if (++id == 0) ++id; // do not use 0 !!!!!
    return id;
}

inline LRESULT RI_MESSAGE( const UINT request, HWND h_client, LPARAM id )
{
    //check if RI handle is valid
    if ( !IsWindow( RI_GetTNS() ) ) 
        return RI_NAVIGATIONNOTACTIVE;
    //send the request
    PostMessage( RI_GetTNS(), request, WPARAM(h_client), id );
    return RI_NOERROR;
}

LRESULT CDlgMFC_SwitchMap::WindowProc ( UINT  message , WPARAM  wParam , LPARAM  lParam )
{
    //check messages for answer from RI
    if ( message == RI_MESSAGE_SWITCHMAP )
    {
        if ( (LRESULT)wParam == RI_NOERROR )
        {
            RI_CSwitchMap data;
            LRESULT read_suc = RI_SwitchMap_ReadData( lParam, data );
            //Switch Map succeeded. errorcode (0)
            TRACE( TEXT("Map Name:  %s"),data.m_MapName );
            TRACE( TEXT("Current Map Name:  %s"),data.m_CurrentMapName );
            TRACE( TEXT("Current Map Date:  %s"),data.m_Currentmapdate );
            TRACE( TEXT("Current Map Version:  %s"),data.m_CurrentMapversion );
            for (int i=0; i<data.m_MapCount; i++)
            {
                TRACE(TEXT("Available Maps: %s"),data.m_AvailableMaps[i]);
            }
        }
        else if ( (LRESULT)wParam == RI_NOTADDED )
            //Switch Map not succeeded. errorcode (-1)
    }
    return CDialog::WindowProc( message, wParam, lParam );
}

void CDlgMFC_SwitchMap::foo()
{
    //define struct
    RI_CSwitchMap data;
    // *** copy data ***
    wcscpy (data.m_MapName, L"deu_08Q2");
    // *** write data in shared memory ***
    LPARAM id = GetUniqueID();
    LRESULT sharing_ret = RI_SwitchMap_WriteData( id, data );
    if ( sharing_ret != RI_NOERROR ) 
        return;
    if ( RI_MESSAGE( RI_MESSAGE_SWITCHMAP, GetSafeHwnd(), id ) == RI_NOERROR )
        //message sending succeeded
    else
        //navigation software not running
}