C++程序怎么使用ShellExecute，最好有一个简单的小程序做例子，比如打开文本文档啥的

#include<windows.h>

int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,PSTR szCmdLine,int iCamdShow)

{

OPENFILENAME ofn

char szFile[MAX_PATH]

ZeroMemory(&ofn, sizeof(ofn))

ofn.lStructSize = sizeof(ofn)

ofn.lpstrFile = szFile

ofn.lpstrFile[0] = TEXT('\0')

ofn.nMaxFile = sizeof(szFile)

ofn.lpstrFilter = "All\0*.*\0Text\0*.TXT\0"

ofn.nFilterIndex = 1 //如果改为2的话就会显示txt格式的文件。

ofn.lpstrFileTitle = NULL

ofn.nMaxFileTitle = 0

ofn.lpstrInitialDir = NULL

ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST

if(GetOpenFileName(&ofn))

{

ShellExecute(NULL,"open",ofn.lpstrFile,NULL,NULL,SW_SHOWNORMAL)//第三个参数是要打开的文件的路径，在你打开的时候自动生成并传给函数，再以open的方式打开，打开的方式将以你电脑系统对该类型文件的打开方式有关。

}

return 0

}

如果是本地账户的话，用mail就可以了；或者直接 *** 作/var/spool/mail/user

如果是像163，sina，gmail等邮箱的话，shell做不到，你可以考虑用python，直接上网查就有了。比如以下：

#!/usr/local/bin/python

#

# mailh.py

# remember user-pass-stat/list-top-dele/retr-quit

import poplib, getpass, string, sys

host = raw_input("The hostname: ")

if (len(host)) == 0:

host = 'pop3.gmail.com'

username = 'xxxx@gmail.com'

password = 'xxxx'

else:

username = raw_input("your username: ")

password = getpass.getpass()

try:

sess = poplib.POP3(host)

sess.user(username)

sess.pass_(password)

except:

print "O^O, there is an error in opening connection!"

sys.exit()

nMess = sess.stat()[0]

headers = []

for i in range(1, nMess+1):

print

mesg = sess.top(i,0)

print i, mesg[0]

for j in range(len(mesg[1])):

if mesg[1][j][0:5] == 'From:' or mesg[1][j][0:5] == 'Date:' \

or mesg[1][j][0:8] == 'Subject:' or mesg[1][j][0:3] == 'To:':

print mesg[1][j]

headers.append(mesg[1][j])

if nMess>0:

print "Received %i message total."%(nMess)

else:

print "Nop, no mail on ", host, "for", username

sess.quit()

if [ $# -ne 1 ]

then

echo "输入一个整数"

exit 1

fi

i=1

sum=1

while [ $i -le $1 ]

do

sum=$((sum * i))

i=$((i+1))

done

echo $sum

这样可实现你的要求

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