[Solved] SDL2 how to translate -> SDL_WINDOWPOS_UNDEFINED ?

[Mijikai]

I need some help translating these constants to PB

In SDL_video.h it looks like this:

Code: Select all

#define SDL_WINDOWPOS_UNDEFINED_MASK    0x1FFF0000u
#define SDL_WINDOWPOS_UNDEFINED_DISPLAY(X)  (SDL_WINDOWPOS_UNDEFINED_MASK|(X))
#define SDL_WINDOWPOS_UNDEFINED         SDL_WINDOWPOS_UNDEFINED_DISPLAY(0)
#define SDL_WINDOWPOS_ISUNDEFINED(X)    \
            (((X)&0xFFFF0000) == SDL_WINDOWPOS_UNDEFINED_MASK)

/**
 *  \brief Used to indicate that the window position should be centered.
 */
#define SDL_WINDOWPOS_CENTERED_MASK    0x2FFF0000u
#define SDL_WINDOWPOS_CENTERED_DISPLAY(X)  (SDL_WINDOWPOS_CENTERED_MASK|(X))
#define SDL_WINDOWPOS_CENTERED         SDL_WINDOWPOS_CENTERED_DISPLAY(0)
#define SDL_WINDOWPOS_ISCENTERED(X)    \
            (((X)&0xFFFF0000) == SDL_WINDOWPOS_CENTERED_MASK)

How would this look like in PureBasic ?

[infratec]

Hi,

maybe this works:

Code: Select all

#SDL_WINDOWPOS_UNDEFINED_MASK = $1FFF0000
Macro SDL_WINDOWPOS_UNDEFINED_DISPLAY(X)
  (#SDL_WINDOWPOS_UNDEFINED_MASK|(X))
EndMacro

#SDL_WINDOWPOS_UNDEFINED = SDL_WINDOWPOS_UNDEFINED_DISPLAY(0)
Macro SDL_WINDOWPOS_ISUNDEFINED(X) 
  Bool(((X) & $FFFF0000) = #SDL_WINDOWPOS_UNDEFINED_MASK)
EndMacro

;
;  \brief Used To indicate that the window position should be centered.
;
#SDL_WINDOWPOS_CENTERED_MASK = $2FFF0000
Macro SDL_WINDOWPOS_CENTERED_DISPLAY(X)
  (#SDL_WINDOWPOS_CENTERED_MASK|(X))
EndMacro
#SDL_WINDOWPOS_CENTERED = SDL_WINDOWPOS_CENTERED_DISPLAY(0)
Macro SDL_WINDOWPOS_ISCENTERED(X)
  Bool(((X) & $FFFF0000) = #SDL_WINDOWPOS_CENTERED_MASK)
EndMacro

A constant with parameter is not possible in PB, you need a Macro.

If you want everything without #, you can try this:

Code: Select all

Macro SDL_WINDOWPOS_UNDEFINED_MASK
  $1FFF0000
EndMacro
Macro SDL_WINDOWPOS_UNDEFINED_DISPLAY(X)
  (SDL_WINDOWPOS_UNDEFINED_MASK|(X))
EndMacro

Macro SDL_WINDOWPOS_UNDEFINED
  SDL_WINDOWPOS_UNDEFINED_DISPLAY(0)
EndMacro
Macro SDL_WINDOWPOS_ISUNDEFINED(X)
  Bool(((X) & $FFFF0000) = SDL_WINDOWPOS_UNDEFINED_MASK)
EndMacro

;
;  \brief Used To indicate that the window position should be centered.
;
Macro SDL_WINDOWPOS_CENTERED_MASK
  $2FFF0000
EndMacro
Macro SDL_WINDOWPOS_CENTERED_DISPLAY(X)
  (SDL_WINDOWPOS_CENTERED_MASK|(X))
EndMacro
Macro SDL_WINDOWPOS_CENTERED
  SDL_WINDOWPOS_CENTERED_DISPLAY(0)
EndMacro
Macro SDL_WINDOWPOS_ISCENTERED(X)
  Bool(((X) & $FFFF0000) = SDL_WINDOWPOS_CENTERED_MASK)
EndMacro

It should work too.

I would prefer the top version, because you can see what is a constant and which is not.

Bernd

[Mijikai]

That was fast
Thank you it works great