Fehlermeldungen bei SDL

[m.sc.m]

Moin!

Ich habe folgenden Code bei mir versucht zu übersetzen:

// Example program:
// Using SDL2 to create an application window

#include <SDL.h>
#include <stdio.h>

int main(int argc, char* argv[]) {

    SDL_Window *window;                    // Declare a pointer

    SDL_Init(SDL_INIT_VIDEO);              // Initialize SDL2

    // Create an application window with the following settings:
    window = SDL_CreateWindow(
        "An SDL2 window",                  // window title
        SDL_WINDOWPOS_UNDEFINED,           // initial x position
        SDL_WINDOWPOS_UNDEFINED,           // initial y position
        640,                               // width, in pixels
        480,                               // height, in pixels
        SDL_WINDOW_OPENGL                  // flags - see below
    );

    // Check that the window was successfully created
    if (window == NULL) {
        // In the case that the window could not be made...
        printf("Could not create window: %s\n", SDL_GetError());
        return 1;
    }

    // The window is open: could enter program loop here (see SDL_PollEvent())

    SDL_Delay(3000);  // Pause execution for 3000 milliseconds, for example

    // Close and destroy the window
    SDL_DestroyWindow(window);

    // Clean up
    SDL_Quit();
    return 0;
}

Dann kamen folgene Fehlermeldungen:

C:\Users\no\Desktop\test.cpp	In function 'int SDL_main(int, char**)':
9	5	C:\Users\no\Desktop\test.cpp	[Error] 'SDL_Window' was not declared in this scope
9	17	C:\Users\no\Desktop\test.cpp	[Error] 'window' was not declared in this scope
16	9	C:\Users\no\Desktop\test.cpp	[Error] 'SDL_WINDOWPOS_UNDEFINED' was not declared in this scope
20	9	C:\Users\no\Desktop\test.cpp	[Error] 'SDL_WINDOW_OPENGL' was not declared in this scope
21	5	C:\Users\no\Desktop\test.cpp	[Error] 'SDL_CreateWindow' was not declared in this scope
35	29	C:\Users\no\Desktop\test.cpp	[Error] 'SDL_DestroyWindow' was not declared in this scope
C:\Users\no\Desktop\test.cpp	At global scope:
7	14	C:\Users\no\Desktop\test.cpp	[Warning] unused parameter 'argc' [-Wunused-parameter]
7	31	C:\Users\no\Desktop\test.cpp	[Warning] unused parameter 'argv' [-Wunused-parameter]

Wurde beim Kopieren der Daten von SDl irgendwas falsch gemacht? (http://wiki.codeblocks.org/index.php/Using_SDL_with_Code::Blocks)

Oder woran liegt es?

Danke