C++ Callback Pointers help

[franksmule]

Hi,

I am having a problem trying to get a callback function to work within a class. Its from the DXUT Direct X source code example. I'm basicly trying to get a callback to call a function within a class. I'm stuck, been reading around looking at all these pointers to functions and I'm confused.

g_SampleUI.SetCallback( OnGUIEvent );

error C3867: 'SETTINGSPAGE::OnGUIEvent': function call missing argument list; use '&SETTINGSPAGE::OnGUIEvent' to create a pointer to member

Now the function is from DXUT and it wants.. PCALLBACKDXUTGUIEVENT pCallback

It worked fine with just g_SampleUI.SetCallback( OnGUIEvent ) outside of a class. This is where I fail with pointers, damn confusing things.
Oh and OnGUIEvent is defined in the same class.

[Ancient Dragon]

you can not make non-static class methods callback functions. Make the method static and it should work.

[franksmule]

I tried putting it as static but get the following compile error.

g_SampleUI.GetStatic( IDC_OUTPUT )->SetText( wszOutput );
left of '.GetStatic' must have class/struct/union

Is this because its now static? g_SampleUI is used fine elsewhere?

[Tom Gunn]

Static methods are called like this:

UIClass::GetStatic( IDC_OUTPUT )->SetText( wszOutput );

Replace UIClass with the name of the class for g_SampleUI.

[franksmule]

I get

illegal call of non-static member function

with CDXUTDialog::GetStatic, is this because a static function must call another static function?

[Ancient Dragon]

static methods can not call or use non-static methods/data. static methods behave more like non-class functions, which also can not directly access class objects.

[Tom Gunn]

Please post more code, or an example that has the same problem. Something is wrong, but playing 20 questions will take a while. ;)