I'm writing a glfw app, in which I've wrapped the function callse into a simple class. Im having trouble setting the key callback.
My class is defined as:
void events(int, int);
glfwOpenWindow(640, 320, 8, 8, 8, 8, 0, 0, GLFW_WINDOW);
running = true;
error C3867: 'GAME::events': function call missing argument list; use '&GAME::events' to create a pointer to member
error C2664: 'glfwSetKeyCallback' : cannot convert parameter 1 from 'void (__thiscall GAME::* )(int,int)' to 'GLFWkeyfun'
1> There is no context in which this conversion is possible
There is a C++ syntax for pointing to class member methods but you cannot pass them to a C style API. C understands function calls and every non-static object method, taking your
events as an example, looks like this thinking in C terms:
void events(void* this, int, int); meaning that every method apart from the standard arguments also gets a
this pointer silently passed.
To make your
events C compatible make it
static void events(int, int);. This way it will follow the C calling semantics - it will not require a
this pointer getting passed. You have to also somehow pass your object to this callback in some other manner (if you need this object's data in the callback).