SDL2: Translate "const Uint8*" from c to fb?

[h4tt3n]

Hello folks,

Quick question. I am translating a SDL2 tutorial series from c/cpp to fb, and after having translated the first many examples without any trouble I ran into this peculiar problem.

I need to translate this line:

Code: Select all

const Uint8* keys = SDL_GetKeyboardState( NULL );

to freebasic dialect, which should be pretty straight forward:

Code: Select all

Const As Uint8 Ptr keys = SDL_GetKeyboardState( NULL )

It returns a pointer to an array of key states. But the compiler keeps throwing an "error 11: Expected constant". With the SDL library included Uint8 is a valid variable.

According to the official SDL2 Wiki I should be doing it just about right, but clearly I am not.

Thanks in advance!

Cheers, Mike

[fxm]

When declaring a constant (with Const at the beginning) it must be a compile-time constant. Only variables declared with Dim or Var at the beginning can allow "run-time constants" like the address of a string literal.

Try perhaps with:
Dim As Const Uint8 Const Ptr keys = SDL_GetKeyboardState( NULL )

[h4tt3n]

Thanks fxm, that did the trick!

I will be posting the SDL2 tutorials and samples when I'm finished, but it may take a little while yet.