从 C0X32.OBJ 引用的未解析的外部“_main”

Question

#include <CkMailMan.h>
#include <CkEmail.h>
#include <stdio>
void ChilkatSample(void)
    {
//  The mailman object is used for sending and receiving email.
CkMailMan mailman;

//  Any string argument automatically begins the 30-day trial.
bool success;
success = mailman.UnlockComponent("30-day trial");
if (success != true) {
    printf("%s\n",mailman.lastErrorText());
    return;
}

//  Set the SMTP server.
mailman.put_SmtpHost("smtp.chilkatsoft.com");

//  Set the SMTP login/password (if required)
mailman.put_SmtpUsername("myUsername");
mailman.put_SmtpPassword("myPassword");

//  Create a new email object
CkEmail email;

email.put_Subject("This is a test");
email.put_Body("This is a test");
email.put_From("Chilkat Support <support@chilkatsoft.com>");
email.AddTo("Chilkat Admin","admin@chilkatsoft.com");
//  To add more recipients, call AddTo, AddCC, or AddBcc once per recipient.

//  Call SendEmail to connect to the SMTP server and send.
//  The connection (i.e. session) to the SMTP server remains
//  open so that subsequent SendEmail calls may use the
//  same connection.
success = mailman.SendEmail(email);
if (success != true) {
    printf("%s\n",mailman.lastErrorText());
    return;
}

//  Some SMTP servers do not actually send the email until
//  the connection is closed.  In these cases, it is necessary to
//  call CloseSmtpConnection for the mail to be  sent.
//  Most SMTP servers send the email immediately, and it is
//  not required to close the connection.  We'll close it here
//  for the example:
success = mailman.CloseSmtpConnection();
if (success != true) {
    printf("Connection to SMTP server not closed cleanly.\n");
}

printf("Mail Sent!\n");
}

我尝试使用 Chilkat 库发送 STMP 邮件。我收到一个错误：“从 C0X32.OBJ 引用的未解析的外部 '_main'。”

Answer 1

您需要一个 main() 函数，这是（托管）实现的 C 入口点。

它可能就像添加一样简单：

int main (void) {
    ChilkatSample();
    return 0;
}

到您的代码，或者它可能要复杂得多。

但最重要的是，您的实现启动代码（在C0X32.OBJ 中）正试图找到main，以便它可以开始正常运行您的程序。

---

此外，如果您在 stdio 标头之后，您应该使用：

#include <stdio.h>

而不是像现在一样放弃扩展。

Answer 2

您缺少程序入口点，即 int main()

如下添加main函数

int  main ( int arc, char **argv ) 
{
    ChilkatSample();
    return 0;
}

现在，您的代码应该如下所示并且应该能够编译

#include <CkMailMan.h>
#include <CkEmail.h>
#include <stdio>
void ChilkatSample(void)
    {
//  The mailman object is used for sending and receiving email.
CkMailMan mailman;

//  Any string argument automatically begins the 30-day trial.
bool success;
success = mailman.UnlockComponent("30-day trial");
if (success != true) {
    printf("%s\n",mailman.lastErrorText());
    return;
}

//  Set the SMTP server.
mailman.put_SmtpHost("smtp.chilkatsoft.com");

//  Set the SMTP login/password (if required)
mailman.put_SmtpUsername("myUsername");
mailman.put_SmtpPassword("myPassword");

//  Create a new email object
CkEmail email;

email.put_Subject("This is a test");
email.put_Body("This is a test");
email.put_From("Chilkat Support <support@chilkatsoft.com>");
email.AddTo("Chilkat Admin","admin@chilkatsoft.com");
//  To add more recipients, call AddTo, AddCC, or AddBcc once per recipient.

//  Call SendEmail to connect to the SMTP server and send.
//  The connection (i.e. session) to the SMTP server remains
//  open so that subsequent SendEmail calls may use the
//  same connection.
success = mailman.SendEmail(email);
if (success != true) {
    printf("%s\n",mailman.lastErrorText());
    return;
}

//  Some SMTP servers do not actually send the email until
//  the connection is closed.  In these cases, it is necessary to
//  call CloseSmtpConnection for the mail to be  sent.
//  Most SMTP servers send the email immediately, and it is
//  not required to close the connection.  We'll close it here
//  for the example:
success = mailman.CloseSmtpConnection();
if (success != true) {
    printf("Connection to SMTP server not closed cleanly.\n");
}

printf("Mail Sent!\n");
}

int  main ( int arc, char **argv ) 
{
    ChilkatSample();
    return 0;
}