x64 dll调用问题-以为我可以修复它，但不能这么快....... [英] x64 dll calling issue - thought I could fix it but not so fast.......

问题描述

在一个较大的64位应用程序的过程中，我正在运行两个64位com dll，即BCRMaster.dll和BCRSlave.dll. BCRSlave在BCRMaster中调用一个称为SlaveCheckin的函数
从属实例的实例连同其DWORD指针，DWORD ID和BOOL LiveOrDie一起记录，无论从属是连接还是断开连接，该实例都将是1或0.

如果编译为32位并在32位应用程序中运行，则可以正常工作.
如果编译为64位并在同一应用程序的64位版本中运行，则主服务器接收到错误的数据.我正在使用.DEF文件进行导出.

接收DWORD似乎不够宽.我应该做些什么，并且有一个独立的解决方案吗?

这是从属调用代码:

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I am running two 64 bit com dlls, BCRMaster.dll and BCRSlave.dll in a process of a larger 64 bit application. BCRSlave calls a function in BCRMaster called SlaveCheckin
where the instance of a Slave instance is logged along with it''s DWORD pointer, DWORD ID and BOOL LiveOrDie which is to be 1 or 0 whether the slave is connecting or disconnecting.

If compiled to 32 bit and run in a 32 application this works flawlessly.
If compiled to 64 bit and run in a 64 bit version of the same app the wrong data is received at the master. I am using a .DEF file to do the exports.

It looks like the receiving DWORD is not wide enough. What should I be doning and is there a bitness independent solution?

Here is the slave calling code:

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typedef void (CALLBACK* LPFNDLLFUNC1)(DWORD,CBCRSlave*,BOOL);
	
    HINSTANCE hDLL;               // Handle to DLL
    LPFNDLLFUNC1 lpfnDllFunc1;    // Function pointer
	
   // DWORD dwParam1 = 1;
   // UINT  uParam2 = 2, uReturnVal;
    hDLL = LoadLibrary("BCRMaster");
    if (hDLL != NULL)
    {
     lpfnDllFunc1 = (LPFNDLLFUNC1)GetProcAddress(hDLL, "SlaveCheckin");
	 
       if (!lpfnDllFunc1)
       {
          FreeLibrary(hDLL);    
          return -1;
       }
       else
       {
	 
		   CurThisPtr = this;
		   lpfnDllFunc1(m_dwSurfaceId,CurThisPtr,1); 
	   }
 
	}
 
		if ( FAILED( hr ))
			return hr;
	}
 
	return hr;
 }

-------------------------------------------------- -------------------------------

这是接收主机功能:

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---------------------------------------------------------------------------------

Here is the receiving Master function:

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void CBCRMaster::SlaveCheckin(DWORD SurfaceID, DWORD ObjInstPtr,BOOL BornOrDead)

-------------------------------------------------- --------------------------------

从属发送:

SurfaceID = 0x00000boc
ObjIstPtr = 0x000000000a9f7930
BornOrDead = 1

主人收到:

SurfaceID = 0x0b0c7930
ObjInstPtr = 0x00000001
BornOrDead = 0x0012e438

:谢谢

Ron

----------------------------------------------------------------------------------

The Slave sends:

SurfaceID = 0x00000boc
ObjIstPtr = 0x000000000a9f7930
BornOrDead = 1

The Master Receives:

SurfaceID = 0x0b0c7930
ObjInstPtr = 0x00000001
BornOrDead = 0x0012e438

:Thanks

Ron

推荐答案

以下是错误(在接收方Master函数中):

Here''s the bug (in the receiving Master function):

void CBCRMaster::SlaveCheckin(DWORD SurfaceID, DWORD ObjInstPtr,BOOL BornOrDead)

如果它接收到指针，则应为void *或指针类型.
DWORD始终为32位.

最好的祝福，

巴勃罗.

It should be void *, or a pointer type, if it receives a pointer.
DWORD is always 32 bits.

Best wishes,

Pablo.

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