Re: function pointer help!
I can't get this function pointer to work! Here's the scoop: I am using a
third party I/O board. The manufacturer supplied a lib and header file with
the following typedef and cbEnableEvent function prototype:
typedef void (__stdcall *EVENTCALLBACK)(int, unsigned, unsigned, void*);
int EXTCCONV cbEnableEvent(int BoardNum, unsigned EventType, unsigned Count,
EVENTCALLBACK CallbackFunc, void *UserData);
I created a function to deal with the callback:
//the return void and input prameters are defined in the manual...
void MyProjectView::CallHandler(int,unsigned int, unsigned int, void*)
{
}
So my challenge is to call cbEnableEvent with a pointer to CallHandler().
How about this?
EVENTCALLBACK pCallHandler;
pCallHandler = CallHandler;
The compiler complains with:
error C2440: '=' : cannot convert from 'void (__stdcall
CMyProjectView::* )(int,unsigned int,unsigned int,void *)' to
'EVENTCALLBACK'
There is no context in which this conversion is possible
Any help will be greatly appreciated!!!
Ron H.
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