CoInitialize（）在C ++中没有被调用的异常 [英] CoInitialize() has not been called exceptions in C++

问题描述

- 我的问题

我得到CoInitialize未被调用exption。

- 我的项目结构

这是我的徽章。我有一个COM DLL，MCLWrapper.dll开发与C＃;我有一个注意的本机C + + DLL，ThorDetectorSwitch.dll调用MCLWrapper.dll;最后，我有一个控制台应用程序TDSTest.exe调用ThorDetectorSwitch.dll。基本上，这样的东西：

TDSTest.exe（C ++控制台） - > ThorDetectorSwitch.dll（C + +本机） - > MCLWrapper.dll em>

---

加载ThorDetectorSwitch.dll的TDSTest.exe中的代码：

  HINSTANCE hInst = LoadLibrary（_T（C：\\TIS_Nick\\\\Hardware\\Devices\\ThorDetectorSwitch\\TDSTest\\ \\\TDSTest\\Debug\\Modules_Native\\ThorDetectorSwitch.dll））; 
  

ThorDetectorSwitch.cpp中的构造函数

  ThorDetectorSwitch :: ThorDetectorSwitch（）：_mcSwitch（__ uuidof（MCLControlClass））
 {
 _A = WstringToBSTR（LA）; 
 _B = WstringToBSTR（LB）; 
 _C = WstringToBSTR（LC）; 
 _D = WstringToBSTR（LD）; 
 
 _deviceDetected = FALSE; 
} 
  

断点命中ThorDetectorSwitch.dll上面的构造函数的第一个括号，但如果我点击F10（再多一步），则立即发生异常

跳转到

  hr = CoCreateInstance（rclsid，pOuter，dwClsContext，__uuidof（IUnknown），reinterpret_cast< void **>（& pIUnknown））; $ com 
 $ b  

这个小时只是CoInitialize没有被调用。

我一直在想这个标志几天，而不能找出一个解决方案。这里的任何人都可以分享任何想法？非常感谢。

解决方案

您的COM dll要求您处于单线程公寓模式。您需要致电 CoInitialize 。

将此添加到您的.exe中：

  CoInitialize（nullptr）; // NULL如果使用旧的VC ++ 
 
 HINSTANCE hInst = LoadLibrary（_T（C：\\TIS_Nick\\ ... 
  pre> 
-My problem

I got CoInitialize has not been called exption.

-My project structure

Here is my porblem. I have a COM dll, MCLWrapper.dll developped with C#; I have a nother native C++ dll, ThorDetectorSwitch.dll that calls MCLWrapper.dll; And finally, I have a console application TDSTest.exe that calls ThorDetectorSwitch.dll. Basically, something like this:   

TDSTest.exe (C++ console) -> ThorDetectorSwitch.dll (C++ native) -> MCLWrapper.dll (C#)



Code in TDSTest.exe that loads the ThorDetectorSwitch.dll:
HINSTANCE hInst = LoadLibrary(_T("C:\\TIS_Nick\\Hardware\\Devices\\ThorDetectorSwitch\\TDSTest\\TDSTest\\Debug\\Modules_Native\\ThorDetectorSwitch.dll"));
Constructor in ThorDetectorSwitch.cpp
ThorDetectorSwitch::ThorDetectorSwitch() : _mcSwitch(__uuidof(MCLControlClass))
{
    _A  = WstringToBSTR(L"A"); 
    _B  = WstringToBSTR(L"B");
    _C  = WstringToBSTR(L"C");
    _D  = WstringToBSTR(L"D");

    _deviceDetected = FALSE;
}
The break point hits the first parenthesis of the constructor of the ThorDetectorSwitch.dll above, but the exception occurred immediately if I hit F10 (one more step)

It jumps to 
 hr = CoCreateInstance(rclsid, pOuter, dwClsContext, __uuidof(IUnknown), reinterpret_cast<void**>(&pIUnknown));
in the comip.h. The hr is simply "CoInitialize has not been called".

I have been thinking abou this porblem for days, and cannot figure out a solution. Anyone here can sharing any thoughts? Really appreciate it.
解决方案
Your COM dll requires you to be in Single-Threaded Apartment mode.  You need to call CoInitialize prior to using it.

Add this to your .exe:
CoInitialize(nullptr); // NULL if using older VC++

HINSTANCE hInst = LoadLibrary(_T("C:\\TIS_Nick\\...


                        
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