This example comes from SDL wizard. CC can not be smart prompt anything.
#ifdef __cplusplus
#include <cstdlib>
#else
#include <stdlib.h>
#endif
#ifdef __APPLE__
#include <SDL/SDL.h>
#else
#include <SDL.h>
#endif
int main ( int argc, char** argv )
{
// initialize SDL video
if ( SDL_Init( SDL_INIT_VIDEO ) < 0 )
{
printf( "Unable to init SDL: %s\n", SDL_GetError() );
return 1;
}
// make sure SDL cleans up before exit
atexit(SDL_Quit);
// create a new window
SDL_Surface* screen = SDL_SetVideoMode(640, 480, 16,
SDL_HWSURFACE|SDL_DOUBLEBUF);
if ( !screen )
{
printf("Unable to set 640x480 video: %s\n", SDL_GetError());
return 1;
}
// load an image
SDL_Surface* bmp = SDL_LoadBMP("cb.bmp");
if (!bmp)
{
printf("Unable to load bitmap: %s\n", SDL_GetError());
return 1;
}
// centre the bitmap on screen
SDL_Rect dstrect;
dstrect.x = (screen->w - bmp->w) / 2;
dstrect.y = (screen->h - bmp->h) / 2;
// program main loop
bool done = false;
while (!done)
{
// message processing loop
SDL_Event event;
while (SDL_PollEvent(&event))
{
// check for messages
switch (event.type)
{
// exit if the window is closed
case SDL_QUIT:
done = true;
break;
// check for keypresses
case SDL_KEYDOWN:
{
// exit if ESCAPE is pressed
if (event.key.keysym.sym == SDLK_ESCAPE)
done = true;
break;
}
} // end switch
} // end of message processing
// DRAWING STARTS HERE
// clear screen
SDL_FillRect(screen, 0, SDL_MapRGB(screen->format, 0, 0, 0));
// draw bitmap
SDL_BlitSurface(bmp, 0, screen, &dstrect);
// DRAWING ENDS HERE
// finally, update the screen :)
SDL_Flip(screen);
} // end main loop
// free loaded bitmap
SDL_FreeSurface(bmp);
// all is well ;)
printf("Exited cleanly\n");
return 0;
}
but if change this code from:
#ifdef __cplusplus
#include <cstdlib>
#else
#include <stdlib.h>
#endif
#ifdef __APPLE__
#include <SDL/SDL.h>
#else
#include <SDL.h>
#endif
TO:
#include <SDL.h>
It's work fine!
Complete code：
#include <SDL.h>
int main ( int argc, char** argv )
{
// initialize SDL video
if ( SDL_Init( SDL_INIT_VIDEO ) < 0 )
{
printf( "Unable to init SDL: %s\n", SDL_GetError() );
return 1;
}
// make sure SDL cleans up before exit
atexit(SDL_Quit);
// create a new window
SDL_Surface* screen = SDL_SetVideoMode(640, 480, 16,
SDL_HWSURFACE|SDL_DOUBLEBUF);
if ( !screen )
{
printf("Unable to set 640x480 video: %s\n", SDL_GetError());
return 1;
}
// load an image
SDL_Surface* bmp = SDL_LoadBMP("cb.bmp");
if (!bmp)
{
printf("Unable to load bitmap: %s\n", SDL_GetError());
return 1;
}
// centre the bitmap on screen
SDL_Rect dstrect;
dstrect.x = (screen->w - bmp->w) / 2;
dstrect.y = (screen->h - bmp->h) / 2;
// program main loop
bool done = false;
while (!done)
{
// message processing loop
SDL_Event event;
while (SDL_PollEvent(&event))
{
// check for messages
switch (event.type)
{
// exit if the window is closed
case SDL_QUIT:
done = true;
break;
// check for keypresses
case SDL_KEYDOWN:
{
// exit if ESCAPE is pressed
if (event.key.keysym.sym == SDLK_ESCAPE)
done = true;
break;
}
} // end switch
} // end of message processing
// DRAWING STARTS HERE
// clear screen
SDL_FillRect(screen, 0, SDL_MapRGB(screen->format, 0, 0, 0));
// draw bitmap
SDL_BlitSurface(bmp, 0, screen, &dstrect);
// DRAWING ENDS HERE
// finally, update the screen :)
SDL_Flip(screen);
} // end main loop
// free loaded bitmap
SDL_FreeSurface(bmp);
// all is well ;)
printf("Exited cleanly\n");
return 0;
}
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Since many system header file that contains all the conditions, I think it is likely that CC is not a comprehensive analysis of one of the reasons.
CC does only use the first pre-processor in #ifdef statements. If you search through the forums you'll realise that handling of pre-processors is not an easy task and done in a simple way in CC.
One way to solve this is adding the parse path to the parser option manually.
[meunu]project->properties->c/c++ parser options.
Quote from: MortenMacFly on January 08, 2010, 01:45:50 PM
CC does only use the first pre-processor in #ifdef statements. If you search through the forums you'll realise that handling of pre-processors is not an easy task and done in a simple way in CC.
Because in the system header file, the conditions contained in the situation too much.
Although there are technical difficulty, but if not properly judge, CC is difficult to achieve the desired results.
In my humble and willing to please CC the team on this issue to find ways to find an ideal solution.
Thanks!
Quote from: blueshake on January 09, 2010, 01:41:57 AM
One way to solve this is adding the parse path to the parser option manually.
[meunu]project->properties->c/c++ parser options.
Has nothing to do with this option, even if I add the search path, we can not search for header files needed.
Need to reopen the project after you set it.
or you can try this.(as I know,it use scrip language.it will slow down parse speed.http://forums.next.codeblocks.org/index.php/topic,11377.0.html (http://forums.next.codeblocks.org/index.php/topic,11377.0.html)