VC++之線程和進(jìn)程之用郵槽實(shí)現(xiàn)進(jìn)程間通信

一、創(chuàng)建應(yīng)用工程

1、創(chuàng)建單文檔應(yīng)用程序工程

2、添加新單文檔應(yīng)用程序工程

二、編輯菜單項(xiàng)

1、編輯Thread工程之菜單項(xiàng)

2、編輯Child工程之菜單項(xiàng)四、添加代碼

1、為CThreadView類添加消息響應(yīng)函數(shù)代碼voidCThreadView::OnReceive()

{

//TODO:Addyourcommandhandlercodehere

HANDLEmailslot;

mailslot=CreateMailslot("\\\\.\\mailslot\\mymailslot",0,MAILSLOT_WAIT_FOREVER,NULL);

//創(chuàng)建郵槽

if(INVALID_HANDLE_VALUE==mailslot)

{

MessageBox("Createfail");

CloseHandle(mailslot);

return;

}

charbuf[100];

DWORDdwread;

ReadFile(mailslot,buf,100,&dwread,NULL);

//讀文件

MessageBox(buf);

CloseHandle(mailslot);

}

2、為CChildView類添加消息響應(yīng)函數(shù)代碼voidCChildView::OnSend()

{

//TODO:Addyourcommandhandlercodehere

HANDLEmailslot;

mailslot=CreateFile("\\\\.\\mailslot\\mymailslot",GENERIC_WRITE,FILE_SHARE_READ,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);

if(INVALID_HANDLE_VALUE==mailslot)

{

MessageBox("Openfail");

CloseHandle(mailslot);

return;

}

charbuf[]="你好,長(zhǎng)江!";

DWORDdwwrite;

WriteFile(mailslot,buf,strlen(buf)+1,&dwwrite,NULL);

CloseHandle(mailslot);

}五、編譯六、運(yùn)行七、函數(shù)說(shuō)明

1、CreateMailslot()函數(shù)聲明HANDLECreateMailslot(LPCTSTRlpName,DWORDnMaxMessageSize,DWORDlReadTimeOut,LPSECURITY_ATTRIBUTESlpSecurityAttributes)

功能：創(chuàng)建一個(gè)郵槽。函數(shù)調(diào)用成功，返回郵槽句柄；否則，返回INVALID_HANDLE_VALUE。

2、CreateFile()函數(shù)聲明HANDLE

CreateFile(LPCTSTRlpFileName,DWORDdwDwsiredAccess,DWORDdwShareMode,LPSECURITY_ATTRIBUTESlpSecurityAttributes,DWORDdwCreationDispostion,DWORDdwFlagsAndAttributes,HANDLEhTemplateFile

)

功能：創(chuàng)建或打開(kāi)一個(gè)文件、通信資源、磁盤驅(qū)動(dòng)器等。

3、ReadFile()函數(shù)聲明BOOL

ReadFile(HANDLEhFile,LPVOIDlpBuffer,DWORDnNumberOfBytesRead,LPDWORDlpNumberOfBytesRead,LPOVERLAPPEDlpOverlapped)

功能：從一個(gè)文件中文件指針位置開(kāi)始讀取數(shù)據(jù)。成功，返回非零值；失敗，返回零。

4、WriteFile()函數(shù)聲明BOOL

WriteFile(HANDLEhFile,LPVOIDlpBuffer,DWORDnNumberOfBytesToWrite,LPDWORD