[SDL] SDL newb: How to make an Onject "klickable" ?

[Florian Hufsky]

you can either use a seperate gui set (paragui, ...)
or do everything yourself.

for example: buttons are quite easy to implement:
save the rectangle of your button and if a mousebutton is pressed, check if
the mouse x,y is inside the button.

maybe this helps:

if_mouse_button_left_is_pressed
if(mousex >= button->rect.x && mousex <= button->rect.x + button->rect.w
  && mousey >= button->rect.y && mousey <= button->rect.y + button->rect.h){

  object_is_klicked
 }

circles are just the same, but the x,y check is different.

something like:
if(mousex >= center.x - radius && mousex <= center.x +radius
&& mousey >= center.y - radius && mousey <= center.y + radius)

got it?
----- Original Message -----
From: "jurri" <zentrum_des_wissens at freenet.de>
To: <sdl at libsdl.org>
Sent: Sunday, July 06, 2003 5:19 PM
Subject: [SDL] SDL newb: How to make an Onject "klickable" ?


>     hi,
>
> i´m new to sdl/c++. how can i make an objekt "klickable" ? like with
> glLoadName ? i´m drawing some circles with the SDL_gfxPrimitives library
> + some text with SDL_ttf. Now i want the user to klick on the text/the
> circle/or parts of the circle. keyboard input already works.
>
>   thx,jurri
>
>
>
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