问题描述
大家好，
我严重陷入了一个用C#编写的应用程序中，该应用程序试图从C ++中生成的OLE发送和接收数据.基本上，最初，该应用程序是用C ++编写的，用于与设备进行通信并获取设备的数据(序列号，型号等)，我将其转换为C#代码.但是，我用于通信的OLE仍然是C ++.我可以使用OLE，但无法通过OLE从设备获取数据.
以下为示例.
用C ++编写的代码
/*********************************************** ****************************************
OLESendCommand
用于发送和接收的功能来自设备的数据
Hi Everyone,
I stuck up badly in a application written in C# where I am trying to send and receive data from OLE which is build in C++. Basically originally this application was written in C++ about communication with device and getting device's data(Sr.no,model no etc.), which I converted in C# code. But still OLE I am using for communication is in C++. I am able to talk with OLE but unable to get data from device through OLE.
Following is an example.
Code written in C++
/*******************************************************************************
OLESendCommand
the function used to send and receive data from the device
公用成员变量'UsingTunnel'被传递给OLE函数.
The public member variable 'UsingTunnel' is passed to the OLE function.
subsys:子系统
cmd:命令
reg8:作为第四个传输字节的选项字节
dataout:32位，低字节序数据.
这形成了有效负载字节4,5,6,7(0、1、2、3、4、5、6、7字节之外)
subsys : the subsystem
cmd : the command
reg8 : an option byte that is the fourth transmitted byte
dataout : 32 bit, little endian data.
this forms the payload bytes 4,5,6,7 (out of 0,1,2,3,4,5,6,7)
*结果信息:这是从事务返回的结果
通常是RET_ACK或RET_DATA32或RET_NAK.
* recvbuffer:必须提供8个字节长的uchar缓冲区. ，仅填充前四个字节，对应于(0,1,2,3,4,5,6,7)中的字节
4,5,6,7
*resultinformation : this is the result returned from the transaction
often will be RET_ACK or RET_DATA32 or RET_NAK.
*recvbuffer : must be supplied with a uchar buffer 8 bytes long.
generally, only the first four bytes are filled, corresponding to the bytes
4,5,6,7 out of (0,1,2,3,4,5,6,7)
长格式命令最多可返回8个字节
up to 8 bytes can be returned for long format commands
如果设备没有答复，则返回非零值.
A non zero value is returned if there was no reply from the device.
*************************************************** ************************************/
uint32 CCOMLib2 :: OLESendCommand( uint32子系统，
uint32 cmd，
uint32 reg8，
uint32数据输出，
uint32 * resultinformation，
uint8 * recvbuffer//buffer 8 deep
){
uint32 result;
try {结果，导致= V.OleFunction(QUOT; SendCommandTemp"，UsingTunnel，结果，DeviceAddress，结果，SUBSYS，结果，CMD，结果，REG8，结果，DATAOUT，结果，resultinformation，结果，( uint32 *)& recvbuffer [0]，
(uint32 *)& recvbuffer [4]);
}
catch(Exception& E){
*******************************************************************************/
uint32 CCOMLib2::OLESendCommand(
uint32 subsys,
uint32 cmd,
uint32 reg8,
uint32 dataout,
uint32 * resultinformation,
uint8 * recvbuffer //buffer 8 deep
) {
uint32 result;
try {
result=V.OleFunction("SendCommandTemp",UsingTunnel,
DeviceAddress,
subsys,
cmd,
reg8,
dataout,
resultinformation,
(uint32*) &recvbuffer[0],
(uint32*) &recvbuffer[4]);
}
catch (Exception &E) {
LM(``无法使用``+
AnsiString(E.Message)，3)访问ole函数;
返回2;
LM("Unable to access ole function with "+
AnsiString(E.Message),3);
return 2;
}
如果(结果)LM(失败.")；
}
if (result) LM("failed.");
返回结果;
}
return result;
}
公共 不安全 Int32 OLESendCommand( Int32 subsys， Int32 cmd， Int32 reg8， Int32 数据输出，
public unsafe Int32 OLESendCommand(Int32 subsys, Int32 cmd, Int32 reg8, Int32 dataout,
Int32 * resultinformation信息， ref byte [] recvbuffer) //buffer 8深
Int32* resultinformation,ref byte[] recvbuffer) //buffer 8 deep
{
Int32 结果；
Int32 result;
尝试
try
{
//result = V.OleFunction("SendCommandTemp"，UsingTunnel，
// result = V.OleFunction("SendCommandTemp", UsingTunnel,
//DeviceAddress，subsys，cmd，reg8，dataout，resultinformation，
// DeviceAddress, subsys, cmd, reg8, dataout, resultinformation,
//ref recvbuffer [0]，ref recvbuffer [4]);
// ref recvbuffer[0], ref recvbuffer[4]);
result =( Int32 )V.GetType().InvokeMember( "SendCommandTemp" ，System.Reflection. BindingFlags .InvokeMethod， null ，V，
result = (Int32)V.GetType().InvokeMember("SendCommandTemp", System.Reflection.BindingFlags.InvokeMethod, null, V,
新 对象 [] { usingTunnel，DeviceAddress，subsys，cmd，reg8，dataout，( Int32 )结果信息，
new object[] { UsingTunnel, DeviceAddress, subsys, cmd, reg8, dataout,(Int32)resultinformation,
recvbuffer [0]，recvbuffer [4]});
recvbuffer[0], recvbuffer[4] });
}
捕获 ( 例外 e)
catch (Exception e)
{
LM( "无法使用 + e.Message，3)访问ole函数;
LM("Unable to access ole function with "+e.Message,3);
返回 2;
return 2;
}
if (结果！= 0)LM( 失败." );
if (result != 0) LM("failed.");
返回 结果；
return result;
}
推荐答案
感谢您的帖子！我建议将您的问题发布到其中一个
Thank you for your post! I would suggest posting your question in one of the
这篇关于如何在C#代码中处理C ++ OLE?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！