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Bug 680

Summary: Maximize Button/SDL_RESIZABLE Flag
Product: SDL Reporter: Jonathan Greig <redteam316>
Component: videoAssignee: Ryan C. Gordon <icculus>
Status: RESOLVED INVALID QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2 CC: redteam316
Version: 1.2.13Keywords: target-1.2.14
Hardware: x86   
OS: Linux   

Description Jonathan Greig 2009-01-16 16:07:40 UTC 
I tested, and apparently to be able to use the maximize button, you must pass the SDL_RESIZABLE flag to the video mode on THE VERY FIRST TIME IT IS INITIALIZED OR ELSE IT WONT WORK.

My code was setting:

    /* Create a 640x480 OpenGL screen */
    if ( SDL_SetVideoMode(640, 480, 0, SDL_OPENGL) == NULL ) {
        fprintf(stderr, "Unable to create OpenGL screen: %s\n", SDL_GetError());
        SDL_Quit();
        exit(2);
    }

on the very first initialization. And I was hitting SDLK_p to actually change the video mode with this code in an SDL_Event while loop:

                      case SDLK_p:
                          /* Create a 800x600 OpenGL screen */
                          if ( SDL_SetVideoMode(800, 600, 0, SDL_RESIZABLE | SDL_OPENGL) == NULL ) {
                              fprintf(stderr, "Unable to create OpenGL screen: %s\n", SDL_GetError());
                              SDL_Quit();
                              exit(2);
                          }

                          /* Set the title bar in environments that support it */
                          SDL_WM_SetCaption("CAD VIEWER TEST", NULL);

                          /* Loop, drawing and checking events */
                          InitGL(800, 600);
                      break;

I am using SDL 1.2.13 on Kubuntu 8.04 "Hardy Heron" and that it where I reproduced this from. I haven't tested on Windows at this point but I would think it occurs there too.
Comment 1 Ryan C. Gordon 2009-09-13 16:33:34 UTC 
Tagging this bug with "target-1.2.14" so we can try to resolve it for SDL 1.2.14.

Please note that we may choose to resolve it as WONTFIX. This tag is largely so we have a comprehensive wishlist of bugs to examine for 1.2.14 (and so we can close bugs that we'll never fix, rather than have them live forever in Bugzilla).

--ryan.
Comment 2 Sam Lantinga 2009-09-21 04:01:04 UTC 
Yes, this is the expected behavior.  You can't change the resize hints on a window in X11 once it's been shown and registered with the window manager.
Comment 3 Ryan C. Gordon 2009-09-21 05:32:40 UTC 
(We should probably tear down the window and rebuild it for this sort of case in SDL 1.3.)

As a workaround for 1.2, if you need to add/remove SDL_RESIZABLE, you can probably call SDL_Quit() then SDL_Init() before SDL_SetVideoMode() to "fix" this.

--ryan.