关于vc/mfc调用exe之后,该怎么获取exe运行结果
如题,当使用ShellExecute等函数调用exe之后,怎么获取到exe内运算的结果 代码如下:
vc调用exe代码:
一个用C#生成的exe代码
在mfc中调用exe,传入两个参数a,b,在exe执行完成后结果为c,怎么在调用之后直接获取到c的值呢,求解答。
经查阅这应该是属于两个进程直接的通讯?是要用到管道,或者内存共享方面的内容,但是没有找到具体的例子
关于vc/mfc调用exe之后,该怎么获取exe运行结果
如题,当使用ShellExecute等函数调用exe之后,怎么获取到exe内运算的结果 代码如下:
vc调用exe代码:
一个用C#生成的exe代码
在mfc中调用exe,传入两个参数a,b,在exe执行完成后结果为c,怎么在调用之后直接获取到c的值呢,求解答。
经查阅这应该是属于两个进程直接的通讯?是要用到管道,或者内存共享方面的内容,但是没有找到具体的例子
仅供参考:
#pragma comment(lib,"user32")
#include <stdio.h>
#include <string.h>
#include <windows.h>
int main() {
SECURITY_ATTRIBUTES sa = {0};
STARTUPINFO si = {0};
PROCESS_INFORMATION pi = {0};
HANDLE hPipeOutputRead = NULL;
HANDLE hPipeOutputWrite = NULL;
HANDLE hPipeInputRead = NULL;
HANDLE hPipeInputWrite = NULL;
BOOL bTest = 0;
DWORD dwNumberOfBytesRead = 0;
DWORD dwNumberOfBytesWrite = 0;
CHAR szMsg[100];
CHAR szBuffer[256];
sa.nLength = sizeof(sa);
sa.bInheritHandle = TRUE;
sa.lpSecurityDescriptor = NULL;
// Create pipe for standard output redirection.
CreatePipe(&hPipeOutputRead, // read handle
&hPipeOutputWrite, // write handle
&sa, // security attributes
0 // number of bytes reserved for pipe - 0 default
);
// Create pipe for standard input redirection.
CreatePipe(&hPipeInputRead, // read handle
&hPipeInputWrite, // write handle
&sa, // security attributes
0 // number of bytes reserved for pipe - 0 default
);
// Make child process use hPipeOutputWrite as standard out,
// and make sure it does not show on screen.
si.cb = sizeof(si);
si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
si.wShowWindow = SW_HIDE;
si.hStdInput = hPipeInputRead;
si.hStdOutput = hPipeOutputWrite;
si.hStdError = hPipeOutputWrite;
CreateProcess (
NULL, "cmd.exe",
NULL, NULL,
TRUE, 0,
NULL, NULL,
&si, &pi);
// Now that handles have been inherited, close it to be safe.
// You don't want to read or write to them accidentally.
CloseHandle(hPipeOutputWrite);
CloseHandle(hPipeInputRead);
// Now test to capture DOS application output by reading
// hPipeOutputRead. Could also write to DOS application
// standard input by writing to hPipeInputWrite.
sprintf(szMsg, "ver\n");
WriteFile(
hPipeInputWrite, // handle of the write end of our pipe
&szMsg, // address of buffer that send data
strlen(szMsg), // number of bytes to write
&dwNumberOfBytesWrite,// address of number of bytes read
NULL // non-overlapped.
);
while(TRUE)
{
bTest=ReadFile(
hPipeOutputRead, // handle of the read end of our pipe
&szBuffer, // address of buffer that receives data
256, // number of bytes to read
&dwNumberOfBytesRead, // address of number of bytes read
NULL // non-overlapped.
);
if (!bTest){
sprintf(szMsg, "Error #%d reading pipe.",GetLastError());
printf("%s",szMsg);
break;
}
// do something with data.
szBuffer[dwNumberOfBytesRead] = 0; // null terminate
printf("%s",szBuffer);
if ('>'==szBuffer[dwNumberOfBytesRead-1]) break;
}
sprintf(szMsg, "chcp\nexit\n");
WriteFile(
hPipeInputWrite, // handle of the write end of our pipe
&szMsg, // address of buffer that send data
strlen(szMsg), // number of bytes to write
&dwNumberOfBytesWrite,// address of number of bytes read
NULL // non-overlapped.
);
while(TRUE)
{
bTest=ReadFile(
hPipeOutputRead, // handle of the read end of our pipe
&szBuffer, // address of buffer that receives data
256, // number of bytes to read
&dwNumberOfBytesRead, // address of number of bytes read
NULL // non-overlapped.
);
if (!bTest){
sprintf(szMsg, "Error #%d reading pipe.",GetLastError());
printf("%s",szMsg);
break;
}
// do something with data.
szBuffer[dwNumberOfBytesRead] = 0; // null terminate
printf("%s",szBuffer);
}
// Wait for CONSPAWN to finish.
WaitForSingleObject (pi.hProcess, INFINITE);
// Close all remaining handles
CloseHandle (pi.hProcess);
CloseHandle (hPipeOutputRead);
CloseHandle (hPipeInputWrite);
return 0;
}
//C:\test>test
//Microsoft Windows [版本 5.2.3790]
//(C) 版权所有 1985-2003 Microsoft Corp.
//
//C:\test>ver
//
//Microsoft Windows [版本 5.2.3790]
//
//C:\test>chcp
//活动的代码页: 936
//
//C:\test>exit
//Error #109 reading pipe.
//C:\test>