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I am trying to get Button.c to work, which is the first of the Walkthroughs from Week 5. I transferred the spl folder to my current directory, altered the Makefile from Breakout so it is working on button.c and I actually got the program to compile. I get the following runtime error: "Error: Unable to access jarfile spl.jar" I did not use the syntax suggested in the Walkthrough for the 2014 version because that did not compile so my code looks like this:

#include <stdio.h>
#include <string.h>
/*#include <spl/gevents.h>
#include <spl/ginteractors.h>
#include <spl/gwindow.h>*/
#include "gevents.h"
#include "ginteractors.h"
#include "gwindow.h"

int main(void)
{
    GWindow window = newGWindow(320, 240);

    GButton button = newGButton("Button");
    setActionCommand(button, "click");

    addToRegion(window, button, "SOUTH");

    while (true)
    {
        GActionEvent event = waitForEvent(ACTION_EVENT);

        if (getEventType(event) == WINDOW_CLOSED) break;

        if (strcmp(getActionCommand(event), "click") == 0) printf("button was clicked.\n");
    }
    closeGWindow(window);
    return 0;
}

The Makefile looks like this:

#
# Makefile
#
# Computer Science 50
# Week 5 Walkthroughs
#

button: button.c Makefile
    clang -ggdb3 -Ispl/include -O0 -std=c99 -Wall -Werror -Wno-unused-variable -o button button.c -Lspl/lib -lcs -lm

clean:
    rm -f *.o core button
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  • make sure the file named spl.jar from pset4 files exists in the same directory as your executable! – kzidane Oct 18 '14 at 16:30
  • Thanks Kareem! That worked. Add it as an answer, rather than a comment, and you can get credit for answering. – Brendan Rafferty Oct 18 '14 at 18:56
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Place the file named spl.jar (from pset4 files) in the same directory as your executable!

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