这段代码编译通过,却弹出窗口问题.

[appleshao]

#include <windows.h>
#include <stdio.h>

int main(int argc, char* argv[])
{
STARTUPINFO si = { sizeof(si) };
PROCESS_INFORMATION pi;

si.dwFlags = STARTF_USESHOWWINDOW;
si.wShowWindow = TRUE;
BOOL bRet = ::CreateProcess (
NULL,
L"cmd.exe", //写成TEXT("cmd")也一样,弹处一个gbox关闭窗口.
NULL,
NULL,
FALSE,
CREATE_NEW_CONSOLE,
NULL,
NULL,
&si,
&pi);

if(bRet)
{
::CloseHandle (pi.hThread);
::CloseHandle (pi.hProcess);

printf(" 新进程的进程ID号：%d \n", pi.dwProcessId);
printf(" 新进程的主线程ID号：%d \n", pi.dwThreadId);
}
return 0;
}

[appleshao]

编译环境vs2008+vista

[appleshao]

ceshi.exe 中的 0x76b00969 处未处理的异常: 0xC0000005: 写入位置 0x00315786 时发生访问冲突

[appleshao]

有什么方法让CreateProcess接受L"cmd.exe"

[hityct1]

楼主要干什么？要运行cmd.exe？如果是的第一个参数是L“cmd.exe”。我的是xp系统。

#include "stdafx.h"
#include <windows.h> 
#include <stdio.h> 

int main(int argc, char* argv[]) 
{ 
	STARTUPINFO si = { sizeof(si) }; 
	PROCESS_INFORMATION pi; 

	si.dwFlags = STARTF_USESHOWWINDOW; 
	si.wShowWindow = TRUE; 
	BOOL bRet = ::CreateProcess ( 
		L"c:\\windows\\system32\\cmd.exe", 
		NULL, 
		NULL, 
		NULL, 
		FALSE, 
		CREATE_NEW_CONSOLE, 
		NULL, 
		NULL, 
		&si, 
		&pi); 

	int error = GetLastError();
	if(bRet) 
	{ 
		::CloseHandle (pi.hThread); 
		::CloseHandle (pi.hProcess); 

		printf(" 新进程的进程ID号：%d \n", pi.dwProcessId); 
		printf(" 新进程的主线程ID号：%d \n", pi.dwThreadId); 
	} 
	else
	{
		printf("error code:%d\n",error );
	}
	return 0; 
} 

[hityct1]

明白出错的原因了，关于第二个参数：
The Unicode version of this function, CreateProcessW, can modify the contents of this string. Therefore, this parameter cannot be a pointer to read-only memory (such as a const variable or a literal string). If this parameter is a constant string, the function may cause an access violation.


第二个参数不能为常量字符串。

#include "stdafx.h"
#include <windows.h> 
#include <stdio.h> 

int main(int argc, char* argv[]) 
{ 
	STARTUPINFO si = { sizeof(si) }; 
	PROCESS_INFORMATION pi; 

	si.dwFlags = STARTF_USESHOWWINDOW; 
	si.wShowWindow = TRUE; 
	TCHAR cmdline[] =L"c:\\windows\\system32\\cmd.exe";
	BOOL bRet = ::CreateProcess ( 
		NULL,
		cmdline, 	 
		NULL, 
		NULL, 
		FALSE, 
		CREATE_NEW_CONSOLE, 
		NULL, 
		NULL, 
		&si, 
		&pi); 

	int error = GetLastError();
	if(bRet) 
	{ 
		::CloseHandle (pi.hThread); 
		::CloseHandle (pi.hProcess); 

		printf(" 新进程的进程ID号：%d \n", pi.dwProcessId); 
		printf(" 新进程的主线程ID号：%d \n", pi.dwThreadId); 
	} 
	else
	{
		printf("error code:%d\n",error );
	}
	return 0; 
}