Parashute

SDL Development
1

i have some troubble:
when i try do something with

SDL_Surface *screen;

after intialization and create main window (it’s ok), later (something other
with “screen”) i resieve:

“Fatal signal Segmentation Fault (SDL Parashute Deployed)”

i can’t do anything with “screen”. i download last sdl libs - nothing.
what to do?

alteest
alteest at rambler.ru

2

Hi,On Mon, Jul 15, 2002 at 12:02:04PM +0600, ??? ??? ??? wrote:

“Fatal signal Segmentation Fault (SDL Parashute Deployed)”

i can’t do anything with “screen”. i download last sdl libs - nothing.
what to do?

Could you give us the code that is segfaulting? Most likely it’s
because of something you’re doing wrong.

Cameron

3

Give us your code

le lun 15-07-2002 ? 08:02, ??? ??? ??? a ?crit :> i have some troubble:

when i try do something with

SDL_Surface *screen;

after intialization and create main window (it’s ok), later (something other
with “screen”) i resieve:

“Fatal signal Segmentation Fault (SDL Parashute Deployed)”

i can’t do anything with “screen”. i download last sdl libs - nothing.
what to do?

alteest
alteest at rambler.ru

SDL mailing list
SDL at libsdl.org
http://www.libsdl.org/mailman/listinfo/sdl

4

i have some troubble:
when i try do something with

SDL_Surface *screen;

after intialization and create main window (it’s ok), later (something other
with “screen”) i resieve:

“Fatal signal Segmentation Fault (SDL Parashute Deployed)”

i can’t do anything with “screen”. i download last sdl libs - nothing.
what to do?

this is code:

#include “sdl.h”

int fullscreen = 0;

BOOL CreateServerWindow(char* title, int width, int height, int bits, BOOL
fullscreenflag)
{
Uint32 flags;
flags = SDL_HWSURFACE|SDL_DOUBLEBUF; // I tried with different flags
if ( fullscreenflag )
flags |= SDL_FULLSCREEN;
if ( SDL_SetVideoMode(width, height, bits, flags) == NULL )
return FALSE;
SDL_WM_SetCaption(title, NULL);
return TRUE;
}

BOOL SetWindowWhite(SDL_Surface *screen)
{
SDL_Rect rect;
rect.x = 20;
rect.y = 20;
rect.w = 50;
rect.h = 50;
Uint32 white;
SDL_PixelFormat *frmt;
.
.
if ( SDL_MUSTLOCK(screen) ) {
if ( SDL_LockSurface(screen) < 0 ) { // HERE IS GOES IN ERROR
fprintf(stderr, “Can’t lock screen: %s\n”, SDL_GetError());
return FALSE;
}
}
.
.
return TRUE;
}

void SDLInit()
{
int i, done;
SDL_Event event;
SDL_Surface *screen;

if (SDL_Init(SDL_INIT_VIDEO) < 0) {
	fprintf(stderr, "Couldn't initialize SDL; %s\n", SDL_GetError());
	exit(1);
}
atexit(SDL_Quit);
if (!CreateServerWindow("server", 640, 480, 16, fullscreen)) {
	fprintf(stderr, "Couldn.t set 640x480x16 video mode: %s\n", SDL_GetError);
	SDL_Quit();
	exit(1);
}
if (!SetWindowWhite(screen))
	exit(1);
done = 0;
while (!done) {
	while(SDL_PollEvent(&event)) {
		if (event.type == SDL_QUIT)
			done = 1;
		if (event.type == SDL_KEYDOWN)
			if (event.key.keysym.sym == SDLK_SPACE) {
				done = 1;
			}
	}
}
SDL_Quit();

}

5

i have some troubble:
when i try do something with

SDL_Surface *screen;

after intialization and create main window (it’s ok), later (something other
with “screen”) i resieve:

“Fatal signal Segmentation Fault (SDL Parashute Deployed)”

i can’t do anything with “screen”. i download last sdl libs - nothing.
what to do?

this is code:

#include “sdl.h”

int fullscreen = 0;

BOOL CreateServerWindow(char* title, int width, int height, int bits, BOOL
fullscreenflag)
{
Uint32 flags;
flags = SDL_HWSURFACE|SDL_DOUBLEBUF; // I tried with different flags
if ( fullscreenflag )
flags |= SDL_FULLSCREEN;
if ( SDL_SetVideoMode(width, height, bits, flags) == NULL )
return FALSE;
SDL_WM_SetCaption(title, NULL);
return TRUE;
}

BOOL SetWindowWhite(SDL_Surface *screen)
{
SDL_Rect rect;
rect.x = 20;
rect.y = 20;
rect.w = 50;
rect.h = 50;
Uint32 white;
SDL_PixelFormat *frmt;
.
.
if ( SDL_MUSTLOCK(screen) ) {
if ( SDL_LockSurface(screen) < 0 ) { // HERE IS GOES IN ERROR
fprintf(stderr, “Can’t lock screen: %s\n”, SDL_GetError());
return FALSE;
}
}
.
.
return TRUE;
}

void SDLInit()
{
int i, done;
SDL_Event event;
SDL_Surface *screen;

if (SDL_Init(SDL_INIT_VIDEO) < 0) {
	fprintf(stderr, "Couldn't initialize SDL; %s\n", SDL_GetError());
	exit(1);
}
atexit(SDL_Quit);
if (!CreateServerWindow("server", 640, 480, 16, fullscreen)) {
	fprintf(stderr, "Couldn.t set 640x480x16 video mode: %s\n", SDL_GetError);
	SDL_Quit();
	exit(1);
}
if (!SetWindowWhite(screen))
	exit(1);
done = 0;
while (!done) {
	while(SDL_PollEvent(&event)) {
		if (event.type == SDL_QUIT)
			done = 1;
		if (event.type == SDL_KEYDOWN)
			if (event.key.keysym.sym == SDLK_SPACE) {
				done = 1;
			}
	}
}
SDL_Quit();

}

6

i have some troubble:
when i try do something with

SDL_Surface *screen;

after intialization and create main window (it’s ok), later (something other
with “screen”) i resieve:

“Fatal signal Segmentation Fault (SDL Parashute Deployed)”

i can’t do anything with “screen”. i download last sdl libs - nothing.
what to do?

Yes, no wonder looking at your code. Corrections below:

#include “sdl.h”

int fullscreen = 0;

/* This should return the surface you allocate */
SDL_Surface CreateServerWindow(char title, int width, int height,
int bits, BOOL fullscreenflag)

{
SDL_Surface *screen;
Uint32 flags;
flags = SDL_HWSURFACE|SDL_DOUBLEBUF; // I tried with different flags
if ( fullscreenflag )
flags |= SDL_FULLSCREEN;
screen = SDL_SetVideoMode(width, height, bits, flags);
if ( screen != NULL )
SDL_WM_SetCaption(title, NULL);
return screen;
}

BOOL SetWindowWhite(SDL_Surface *screen)
{
SDL_Rect rect;
rect.x = 20;
rect.y = 20;
rect.w = 50;
rect.h = 50;
Uint32 white;
SDL_PixelFormat *frmt;
.
.
if ( SDL_MUSTLOCK(screen) ) {
if ( SDL_LockSurface(screen) < 0 ) { // HERE IS GOES IN ERROR
fprintf(stderr, “Can’t lock screen: %s\n”, SDL_GetError());
return FALSE;
}
}
.
.
return TRUE;
}

/* We need to actually set screen to something */

void SDLInit()
{
int i, done;
SDL_Event event;
SDL_Surface *screen;

if (SDL_Init(SDL_INIT_VIDEO) < 0) {
fprintf(stderr, “Couldn’t initialize SDL; %s\n”, SDL_GetError());
exit(1);
}
atexit(SDL_Quit);
screen = CreateServerWindow(“server”, 640, 480, 16, fullscreen);
if (screen == NULL) {
fprintf(stderr, “Couldn.t set 640x480x16 video mode: %s\n”, SDL_GetError);
SDL_Quit();
exit(1);
}
if (!SetWindowWhite(screen))
exit(1);
done = 0;
while (!done) {
while(SDL_PollEvent(&event)) {
if (event.type == SDL_QUIT)
done = 1;
if (event.type == SDL_KEYDOWN)
if (event.key.keysym.sym == SDLK_SPACE) {
done = 1;
}
}
}
SDL_Quit();
}

The problem is that you weren’t actually setting screen to anything, ever.
So I just made sure it was set and returned from your init function. This
should work, probably.On Tue, Jul 23, 2002 at 08:16:12AM +0600, alteest wrote:

–
Joseph Carter I N33D MY G4M3Z, D00D!!!111!!
(Just … don’t ask)

I sat laughing snidely into my notebook until they showed me a PC running
Linux. And oh! It was as though the heavens opened and God handed down a
client-side OS so beautiful, so graceful, and so elegant that a million
Microsoft developers couldn’t have invented it even if they had a hundred
years and a thousand crates of Jolt cola.
– LAN Times

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