CocoaCode.m

/*
    File:       CocoaCode.m
    
    Description:    This file contains Cocoa code which X11 calls to perform various operations.
        
    Author:     Chad Jones 
 
    Copyright:  © Copyright 2003 Apple Computer, Inc. All rights reserved.
    
    Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.
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                constitutes acceptance of these terms.  If you do not agree with these terms,
                please do not use, install, modify or redistribute this Apple software.
 
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                to these terms, Apple grants you a personal, non-exclusive license, under Apple’s
                copyrights in this original Apple software (the "Apple Software"), to use,
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                Software may be incorporated.
 
                The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO
                WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
                WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
                PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
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                IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
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    Change History (most recent first): 
*/
 
#import "CocoaCode.h"
 
#include <Cocoa/Cocoa.h>
 
NSAutoreleasePool * pool = NULL;
 
void InitializeCocoa()
{
    //need a auto release pool for allocating objects.
    pool = [[NSAutoreleasePool alloc] init];
 
    /* Gaining access to the shared application.  This is a very important step because it initializes
     * the Cocoa envionment.  This is required to do things like put up Cocoa alert dialogs.  
     */
    [NSApplication sharedApplication];
}
 
void DeInitializeCocoa()
{
    //deallocate the autorelease pool if neccessary.
    if (pool != NULL)
        {[pool release];}
}
 
void DisplayDialogFromCocoa(const char* HeaderStringToDisplay, const char* MessageToDisplay)
{  
 
    NSString* HeaderStringToDisplayNSString = NULL;
    NSString* MessageToDisplayNSString = NULL;
    
    if (HeaderStringToDisplay != NULL)
        {HeaderStringToDisplayNSString = [NSString stringWithCString: HeaderStringToDisplay];}
 
    if (MessageToDisplay != NULL)
        {MessageToDisplayNSString = [NSString stringWithCString: MessageToDisplay];}
    
    /* Here we are going to display an alert panel.  We put up the dialog with Cocoa call NSRunAlertPanel
     * First Argument: The header on the dialog.  here we use what was passed to us.
     * Second Argument: Message to put in the dialog.  In this case the message passed to us.
     * Third Argument: The label on the button to show.  Here we just want an OK button so pass OK as NSString
     * Forth Argument: The label of a second button to show.  Here we don't want a second button so pass
     *   NULL indicating to not add a second button.
     * Fifth Argument: The label of a third button to show.  Here we don't want a third button so pass
     *   NULL indicating to not add a third button.
     * Return Value: An integer indicating which button the user clicked.  Here since there is only one
     *   button we just disregard the result
     */
    NSRunAlertPanel(HeaderStringToDisplayNSString, MessageToDisplayNSString, @"OK", nil, nil);
}
 
void BeepFromCocoa()
{
    NSBeep();
}