Creating COM object in Threads

Question

I have a button, behind that button i created a thread,

void FunctionCallingThreadFunction()
{
    AfxBeginThread(MyFunction, NULL);
}

In MyFunction i am creating a COM object, but when I create instance of it, null is returned to me,

MyFunction(LPVOID pvParam)
{
    comObject.CreateInstance(__uuidof(ClassName), NULL, CLSCTX_INPROC_SERVER);
}

But if i create this comObject in origional function it is created fine,

what is problem?,

Answer 1

在尝试创建实例之前，您需要在每个线程中调用CoInitialize() 。

Answer 2

您需要在使用COM的每个线程中调用CoInitializeEx 。