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// Ask for application and topic and send a DDEexecute to it
//the DDE is the szCmd1
//
#include "stdafx.h"
#include "windows.h"
#include "ddeml.h"
#include "stdio.h"
#include <string>
#include <iostream>
using namespace std;

HDDEDATA CALLBACK DdeCallback(
    UINT uType,     // Transaction type.
    UINT uFmt,      // Clipboard data format.
    HCONV hconv,    // Handle to the conversation.
    HSZ hsz1,       // Handle to a string.
    HSZ hsz2,       // Handle to a string.
    HDDEDATA hdata, // Handle to a global memory object.
    DWORD dwData1,  // Transaction-specific data.
    DWORD dwData2)  // Transaction-specific data.
{
    return 0;
}
	void DDEExecute(DWORD idInst, HCONV hConv, char* szCommand)
{

	HDDEDATA hData = DdeCreateDataHandle(idInst, (LPBYTE)szCommand,
                               lstrlen(szCommand) +1, 0, NULL, CF_TEXT, 0);
    if (hData==NULL)   {
       printf("Command failed: %s\n", szCommand);
    }
    else    {
        DdeClientTransaction((LPBYTE)hData, 0xFFFFFFFF, hConv, 0L, 0,
                             XTYP_EXECUTE, TIMEOUT_ASYNC, NULL);
    }
}

int main(int argc, char* argv[])
{
	char myapp[30];
	char mytopic[80];
		cout << "App name:";
	cin >> myapp;
		cout << "Topic name:";	
	cin >> mytopic;
	//parameters to send (no backslash...)
	char szCmd1[] = "S;C:/archiviMida4/O01820110701.MDB;;C:/CC_SaniMont_DB2012/IOMidaDbFornitura/RisultatoMida.txt;C:/CC_SaniMont_DB2012/IOMidaDbFornitura/EsitoMida.txt;2646_clienteCodice;1014";
   
    //DDE Initialization
    DWORD idInst=0;
    UINT iReturn;
    iReturn = DdeInitialize(&idInst, (PFNCALLBACK)DdeCallback, 
                            APPCLASS_STANDARD | APPCMD_CLIENTONLY, 0 );
    if (iReturn!=DMLERR_NO_ERROR)
    {
        printf("DDE Initialization Failed: 0x%04x\n", iReturn);
        Sleep(1500);
        return 0;
    }

    ////Start DDE Server and wait for it to become idle.
    //HINSTANCE hRet = ShellExecute(0, L"open", szTopic, 0, 0, SW_SHOWNORMAL);
    //if ((int)hRet < 33)
    //{
    //    printf("Unable to Start DDE Server: 0x%04x\n", hRet);
    //    Sleep(1500); DdeUninitialize(idInst);
    //    return 0;
    //}
    //Sleep(1000);

    //DDE Connect to Server using given AppName and topic.
    HSZ hszApp, hszTopic;
    HCONV hConv;
    hszApp = DdeCreateStringHandle(idInst, myapp, 0);
    hszTopic = DdeCreateStringHandle(idInst, mytopic, 0);
    hConv = DdeConnect(idInst, hszApp, hszTopic, NULL);
    DdeFreeStringHandle(idInst, hszApp);
    DdeFreeStringHandle(idInst, hszTopic);
    if (hConv == NULL)
    {
        printf("DDE Connection Failed.\n");
        Sleep(1500); DdeUninitialize(idInst);
        return 0;
    }

    //Execute commands/requests specific to the DDE Server.
    DDEExecute(idInst, hConv, szCmd1); //send the DDE

    //DDE Disconnect and Uninitialize.
    DdeDisconnect(hConv);
    DdeUninitialize(idInst);

    Sleep(3000);
    return 1;
}