A problem: call calibre-smtp.exe by CreateProcess in C++

[woodx99]

Hello, everyone ,
I am a newer to calibre. Recently I want to send a email by call calibre-smtp.exe using CreateProcess() function in C++. The result is the CreateProcess() function return success, but maybe calibre-smtp.exe does not work, And nothing happend. so I donot call CreateProcess(), and changed to system() function, I doesnot work too.
But I run the calibre-smtp.exe and its param in cmd line (OS: windows7 64bit), it worked fine and email can be send successfully. The cmd line is:
"C:\Program Files (x86)\Calibre2\calibre-smtp.exe" -e SSL -r smtp.qq.com -u myuserid -p mypassword --port 465 -v -s "Email_title" xx@qq.com yy@foxmail.com "mailBody"

what is the matter? Do anyone know it?

[woodx99]

Can someone give me a idea about this problem?

[PeterT]

Maybe if you post the code you are using, or a portion of it so people can see exactly what you are doing.

[PeterT]

For what it's worth.... this worked for me. Sorry I am NOT a c++ programmer; just found some examples on the web and modified them.

Spoiler:

	STARTUPINFO si;
    PROCESS_INFORMATION pi;

	WCHAR pCalibre[] = L"\"C:\\Program Files (x86)\\Calibre2\\calibre-smtp.exe\" -e SSL -r smtp.qq.com -u myuserid -p mypassword --port 465 -v -s \"Email_title\" xx@qq.com yy@foxmail.com \"mailBody\"";

    ZeroMemory( &si, sizeof(si) );
    si.cb = sizeof(si);
    ZeroMemory( &pi, sizeof(pi) );

//    if( argc != 2 )
//    {
//        printf("Usage: %s [cmdline]\n", argv[0]);
//        return -1;
//    }

    // Start the child process. 
    if( !CreateProcess( NULL,   // No module name (use command line)
        pCalibre,       // Command line
        NULL,           // Process handle not inheritable
        NULL,           // Thread handle not inheritable
        FALSE,          // Set handle inheritance to FALSE
        0,              // No creation flags
        NULL,           // Use parent's environment block
        NULL,           // Use parent's starting directory 
        &si,            // Pointer to STARTUPINFO structure
        &pi )           // Pointer to PROCESS_INFORMATION structure
    ) 
    {
        printf( "CreateProcess failed (%d).\n", GetLastError() );
        return -1;
    }

    // Wait until child process exits.
    WaitForSingleObject( pi.hProcess, INFINITE );

    // Close process and thread handles. 
    CloseHandle( pi.hProcess );
    CloseHandle( pi.hThread );
	
	return 0;

[woodx99]

Blow is my full test source code:

#include "stdafx.h"

#include "Windows.h"
#include "Winbase.h"


int main(int argc, char* argv[])
{
STARTUPINFO startinfo;
PROCESS_INFORMATION processinfo;
memset(&startinfo, 0, sizeof(STARTUPINFO));
startinfo.cb = sizeof(STARTUPINFO);
startinfo.lpReserved = NULL;
memset(&processinfo, 0, sizeof(PROCESS_INFORMATION));


const char* psExeName = "C:\\Program Files (x86)\\Calibre2\\calibre-smtp.exe";
char szCmdLine[4096];
strcpy(szCmdLine, "C:\\Program Files (x86)\\Calibre2\\calibre-smtp.exe -e SSL -r smtp.qq.com -u myuserid -p mypwd --port 465 -v -s \"Email_title\" from@qq.com to@foxmail.com \"mailBody\"");
const char* psCurrDir = "C:\\Program Files (x86)\\Calibre2";

if(CreateProcess(psExeName, szCmdLine, NULL, NULL, FALSE, CREATE_NO_WINDOW|DETACHED_PROCESS,
NULL, psCurrDir, &startinfo, &processinfo)==0)
{
printf("Create process failed.\n");
return -1;
}
printf("Create process ok.\n");

return 0;
}


==== This code can work, and print "Create process ok", but No mail has been sent.

[woodx99]

thanks to PeterT, his code does worked ok. I found my bug is that DETACHED_PROCESS flag is not necessary. And thanks everyone.