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A Newbie SDL Question
Posted: Sun Mar 08, 2009 4:34 pm
by ibly31
How do you maximize a window? I know how to set the size to 1024*768(My dimensions), and I'm sure there is a way to set the windows position, but thats not true maximize. Anyone know? Is it as simple as "SDL_WindowMaximize(blah);"
Re: A Newbie SDL Question
Posted: Sun Mar 08, 2009 4:44 pm
by Ginto8
you can pass a combination of the flags SDL_FULLSCREEN and SDL_NOFRAME (using bitwise XOR, ^) so that you have a fullscreen window with a frame. Example in pseudocode:
Code: Select all
if(player maximizes window)
{
screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, (SDL_SWSURFACE|SDL_RESIZABLE|SDL_FULLSCREEN)^SDL_NOFRAME);
}
you have to XOR out SDL_NOFRAME because, by default, it is included in SDL_FULLSCREEN.
Hope I helped.
Re: A Newbie SDL Question
Posted: Mon Mar 09, 2009 7:56 pm
by ibly31
Umm... How do I XOR noframe? And I tried that code you had there, and it errored, went non-responding, then crashed. :D
EDIT: Also, I'm displaying PNG's with Alpha pre-made... and they are displaying with a black background... how do I make it interpret the alpha values?
Re: A Newbie SDL Question
Posted: Mon Mar 09, 2009 9:16 pm
by Ginto8
#1. Use the debugger, check what error you get. Also, check if there's an stderr.txt or stdout.txt in the executable's folder. It may have information on the crash.
#2. If you're colorkeying, premade transparancy won't work.
Hopefully that helps.
Re: A Newbie SDL Question
Posted: Mon Mar 09, 2009 11:30 pm
by wtetzner
ibly31 wrote:EDIT: Also, I'm displaying PNG's with Alpha pre-made... and they are displaying with a black background... how do I make it interpret the alpha values?
in this tutorial:
http://www.lazyfoo.net/SDL_tutorials/le ... /index.php
Where he has
Code: Select all
//If nothing went wrong in loading the image
if( loadedImage != NULL )
{
//Create an optimized image
optimizedImage = SDL_DisplayFormat( loadedImage );
//Free the old image SDL_FreeSurface( loadedImage );
}
use SDL_DisplayFormatAlpha() instead of SDL_DisplayFormat().
Re: A Newbie SDL Question
Posted: Tue Mar 10, 2009 1:46 am
by PixelP
this should get the job done.
Code: Select all
#include "SDL.h"
int SDL_WM_ToggleFullScreen(SDL_Surface *surface);
Re: A Newbie SDL Question
Posted: Tue Mar 10, 2009 1:48 am
by Kros
There is a slight difference between fullscreen and a maximized window. Mayhaps he should clarify which hes looking to accomplish?
Re: A Newbie SDL Question
Posted: Tue Mar 10, 2009 6:37 am
by ibly31
I want, when you click that little button on the top right hand corner; maximized. NOT fullscreen. How is it done? Because the other code made the screen go black except for the start bar and them freeZe and crash...
EDIT:
I took away the XOR of noframe and it works fine, except I had to add a little event SDLK_ESCAPE checker to exit instead of the X button event. Thanks!