oceanwind 发表于 2012-7-23 16:05:42

Au3如何读取一个已建立的内存映射?[已解决]

本帖最后由 oceanwind 于 2012-7-23 18:31 编辑

以下的C++控制台可以读出来名为 jzt_output_price的映射对象 但AU3不知道咋个写 求指教 谢谢先

#include "stdafx.h"
#include <Windows.h>
#include <iostream>
#include <string>
using namespace std;

DWORD WINAPI FirstThread(PVOID pvParam);

int _tmain(int argc, _TCHAR* argv[])
{

    HANDLE hFilemap1 = OpenFileMapping(FILE_MAP_READ|FILE_MAP_WRITE,FALSE,_T("jzt_output_price")); //打开名为 jzt_output_price的映射对象.
    if(hFilemap1 == NULL)
    {

      cout<<"openfilemapping 失败"<<endl;
    }

    float *pView = (float*)MapViewOfFile(hFilemap1,FILE_MAP_READ|FILE_MAP_WRITE,0,0,0);

    if(pView == NULL)
    {

      cout<<"map view 失败"<<endl;
    }
    else
    {
      
            cout<<*pView;

      UnmapViewOfFile(pView);

    }

    CloseHandle(hFilemap1);

    system("pause");
    return 0;
}

oceanwind 发表于 2012-7-23 16:06:59

写了一下 写不下去了
$hFilemap1 = dllcall("Kernel32.dll","HANDLE","OpenFileMappingW","dword","FILE_MAP_READ|FILE_MAP_WRITE","BOOL","FALSE","wstr","jzt_output_price")
$a_hCall =dllcall("Kernel32.dll","ptr","MapViewOfFile","hwnd",$hFilemap1,"dword","FILE_MAP_READ|FILE_MAP_WRITE","DWORD",0,"DWORD",0,"DWORD",0)

oceanwind 发表于 2012-7-23 16:31:24

看到一个贴子发现一种新的AU3进程通信,非wm_copydatahttp://bbs.wglm.net/forum.php?mod=viewthread&tid=141123&highlight=
直接用
_WinAPI_OpenFileMapping
但是在线文档和帮助中没有发现这个函数啊

pusofalse 发表于 2012-7-23 16:58:13


Const $FILE_MAP_READ = 4
Const $FILE_MAP_WRITE = 2

Const $SECTION_NAME = "jzt_output_price"

Local $hSection = OpenFileMapping(BitOR($FILE_MAP_READ, $FILE_MAP_WRITE), 0, $SECTION_NAME)
Local $pBaseAddress = MapViewOfFile($hSection, BitOR($FILE_MAP_READ, $FILE_MAP_WRITE), 0, 0, 0)

; Do something with the $pBaseAddress

UnmapViewOfFile($pBaseAddress)
CloseHandle($hSection)


Func OpenFileMapping($iDesiredAccess, $fInheritHandle, $sSectionName)
        Local $iResult
        $iResult = DllCall("Kernel32.dll", "handle", "OpenFileMappingW", "dword", $iDesiredAccess, "bool", $fInheritHandle, "wstr", $sSectionName)

        Return $iResult
EndFunc        ;==>OpenFileMapping

Func MapViewOfFile($hSection, $iDesiredAccess, $iOffsetHigh, $iOffsetLow, $iNumberofBytesToMap)
        Local $iResult
        $iResult = DllCall("Kernel32.dll", "ptr", "MapViewOfFile", "handle", $hSection, "dword", $iDesiredAccess, "long", $iOffsetHigh, "long", $iOffsetLow, "long", $iNumberofBytesToMap)

        Return $iResult
EndFunc        ;==>MapViewOfFile

Func CloseHandle($hObject)
        Local $iResult
        $iResult = DllCall("Kernel32.dll", "bool", "CloseHandle", "handle", $hObject)

        Return $iResult
EndFunc        ;==>CloseHandle

Func UnmapViewOfFile($pBaseAddress)
        Local $iResult
        $iResult = DllCall("Kernel32.dll", "bool", "UnmapViewOfFile", "ptr", $pBaseAddress)

        Return $iResult
EndFunc        ;==>UnmapViewOfFile

进程通信必须要满足两个原则，一是能够数据共享，二是必须有线程同步机制。用内存映射的方式来回传递数据并不算真正意义上的进程通信，因为它只有数据共享，而没有线程同步，所以就必须在一个循环中实时监测内存中的数据。

oceanwind 发表于 2012-7-23 18:30:58

进程通信必须要满足两个原则，一是能够数据共享，二是必须有线程同步机制。用内存映射的方式来回传递数 ...
pusofalse 发表于 2012-7-23 16:58 http://www.autoitx.com/images/common/back.gif
太感谢..........

单毛线 发表于 2013-1-21 22:21:00

留个名，向高手学习

曼菲士 发表于 2013-3-23 10:32:25

学习了，今天又小积一点。

alaws 发表于 2013-11-27 13:16:08

大神 分享，学习一下
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