using VS2005 and VA 1649 I added the following code to a class in a C++ header file:
__out_bcount_opt(MAX_VALUE_LENGTH) char *GetMyValue(int Handle) { return NULL; }
This is not quite the same as yours, I made a couple of changes to get it to compile in my test project. When I call this function in the matching cpp file this is what I am seeing:
Do you have:
VA Options -> Advanced -> Display -> Enable automatic Quick Info ToolTips
turned on or off? I am testing with this turned On.