view test/testmmousetablet.c @ 3487:24d13328c44a

Eric Wing to Sam, hfutrell This one is quite puzzling. I found a partial workaround, but I don't fully understand the reasons yet. First, the console is complaining about not finding a nib for MainWindow. I tried removing the entry for this in the info.plist, and the message went away, but it didn't really change anything. Second, I stepped through this with the debugger and broke up some lines. It seems that the basic act of calling view = [SDL_uikitopenglview alloc]; or even view = [SDL_uikitview alloc] will crash the program. The debugger messages plus the stack trace make me think it's not finding the SDL_uikitview classes for some reason. But I don't understand why this would be. view = [UIView alloc] will not crash the program. For kicks, I added a new definition of a class called SDL_object which subclasses NSObject in the same files as SDL_uikitopenglview and then call view = [SDL_object alloc]; This does not crash the program. So, then I modified SDL_object to subclass UIView. No crash. Next, I made SDL_object subclass UIView<UITextFieldDelegate> . This crashes. So it is the act of conforming to the UITextFieldDelegate protocol that is crashing things. I don't understand why it would crash on alloc though. I'm guessing either a delegate needs to be set somewhere or one of the required methods needs to be implemented. But in the former case, I would not expect a crash, but a silent message to nil and something else doesn't work. And in the latter case, I would expect a compiler warning and an exception thrown instead of a crash. Anyway, my temporary workaround is to change the interface declaration for SDL_uikitview to look like: #if SDL_IPHONE_KEYBOARD @interface SDL_uikitview : UIView<UITextFieldDelegate> { #else @interface SDL_uikitview : UIView { #endif And then disable the keyboard support in the SDL_config_iphoneos.h file. /* enable iPhone keyboard support */ #define SDL_IPHONE_KEYBOARD 0 -Eric On Nov 23, 2009, at 1:43 AM, Sam Lantinga wrote: > I ran into a blocking startup crash with the Happy demo on iPhone OS 3.1.2 on my new iPhone: > > #0 0x323fea14 in _class_isInitialized > #1 0x323fea68 in _class_initialize > #2 0x32403e92 in prepareForMethodLookup > #3 0x32401244 in lookUpMethod > #4 0x323fea10 in _class_lookupMethodAndLoadCache > #5 0x323fe746 in objc_msgSend_uncached > #6 0x323feb26 in _class_initialize > #7 0x323fea58 in _class_initialize > #8 0x32403e92 in prepareForMethodLookup > #9 0x32401244 in lookUpMethod > #10 0x323fea10 in _class_lookupMethodAndLoadCache > #11 0x323fe746 in objc_msgSend_uncached > #12 0x000554dc in UIKit_GL_CreateContext at SDL_uikitopengles.m:103 > #13 0x0004f89e in SDL_GL_CreateContext at SDL_video.c:3155 > #14 0x000579e8 in GLES_CreateRenderer at SDL_renderer_gles.c:282 > #15 0x0004d7b8 in SDL_CreateRenderer at SDL_video.c:1509 > #16 0x00002bc2 in SDL_main at happy.c:156 > #17 0x000571b2 in -[SDLUIKitDelegate postFinishLaunch] at > SDL_uikitappdelegate.m:77 > #18 0x313f9ef2 in __NSFireDelayedPerform > #19 0x32567bb2 in CFRunLoopRunSpecific > #20 0x3256735c in CFRunLoopRunInMode > #21 0x32912cbe in GSEventRunModal > #22 0x32912d6a in GSEventRun > #23 0x32b6276e in -[UIApplication _run] > #24 0x32b61472 in UIApplicationMain > #25 0x00057088 in main at SDL_uikitappdelegate.m:50 > > Any ideas? > > See ya! > -- > -Sam Lantinga, Founder and President, Galaxy Gameworks LLC
author Sam Lantinga <slouken@libsdl.org>
date Tue, 24 Nov 2009 08:12:32 +0000
parents 975fd903466b
children
line wrap: on
line source

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

SDL_Surface *screen;
int quit = 0;

int
main(int argc, char *argv[])
{
    SDL_Event event;
    int mice;
    int i;
    printf("Initing...\n");
    if (SDL_Init(0) != 0) {
        return 1;
    }
    if (SDL_InitSubSystem(SDL_INIT_VIDEO) != 0) {
        return 1;
    } else {
        screen = SDL_SetVideoMode(640, 480, 32, SDL_DOUBLEBUF);
    }
    mice = SDL_GetNumMice();
    printf("%d pointing devices found\n", mice);
    for (i = 0; i < mice; ++i) {
        printf("device index: %d name:%s\n", i, SDL_GetMouseName(i));
    }
    while (quit != 1) {
        if (SDL_PollEvent(&event) == 0) {
        } else {
            switch (event.type) {
            case SDL_MOUSEMOTION:
                printf
                    ("Device id: %d x: %d y: %d relx: %d rely: %d pressure: %d\n \
					pressure_max: %d pressure_min: %d current cursor:%d\n",
                     event.motion.which, event.motion.x, event.motion.y, event.motion.xrel, event.motion.yrel,
                     event.motion.pressure, event.motion.pressure_max, event.motion.pressure_min,
                     event.motion.cursor);
                break;
            case SDL_PROXIMITYIN:
                printf("proximity in id: %d x: %d y: %d\n",
                       (int) event.proximity.which, event.proximity.x,
                       event.proximity.y);
                break;
            case SDL_PROXIMITYOUT:
                printf("proximity out id: %d x: %d y: %d\n",
                       (int) event.proximity.which, event.proximity.x,
                       event.proximity.y);
                break;
            case SDL_MOUSEBUTTONDOWN:
                printf("mouse button down id: %d button:%d\n",
                       event.button.which, event.button.button);
                break;
            case SDL_MOUSEBUTTONUP:
                printf("mouse button up id: %d button: %d\n",
                       event.button.which, event.button.button);
                break;
            case SDL_QUIT:
                printf("Quitting\n");
                SDL_QuitSubSystem(SDL_INIT_VIDEO);
                SDL_Quit();
                quit = 1;
                break;
            }
        }
    }
    return 0;
}