main.c

 /*
    File:       main.c
 
 
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                The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO
                WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
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    Copyright © 2002-2004 Apple Computer, Inc., All Rights Reserved
*/
#include <Carbon/Carbon.h>
#include "CocoaStuff.h"
 
enum
{
    kOpenCocoaWindow = 'COCO'
};
 
static OSStatus 
handleCommand(int commandID) {
    OSStatus osStatus = noErr;
    if (commandID == kEventButtonPressed) {
 
        osStatus = changeText(CFSTR("button pressed!"));
        require_noerr(osStatus, CantCallFunction);
    }
CantCallFunction:
    return osStatus;
}
 
 
static OSStatus
appCommandHandler(EventHandlerCallRef inCallRef, EventRef inEvent, void* userData) {
    HICommand command;
    OSStatus err = eventNotHandledErr;
 
    
    if (GetEventKind(inEvent) == kEventCommandProcess) {
        GetEventParameter( inEvent, kEventParamDirectObject, typeHICommand, NULL, sizeof(HICommand), NULL, &command );
        switch ( command.commandID ) {
            case kOpenCocoaWindow:
                               
                // call function to initialize Cocoa
                err = initializeCocoa(handleCommand);
                require_noerr(err, CantInitializeCocoa);
                
                // call function to show window
                err = orderWindowFront();
                require_noerr(err, CantCallFunction);
                
CantCallFunction:
CantInitializeCocoa:
                break;
            default:
                break;
        }
    }
 
    return err;
}
 
int main(int argc, char* argv[])
{
    IBNibRef        nibRef;
    WindowRef       window;
    OSStatus        err;
    EventTypeSpec   cmdEvent    = {kEventClassCommand, kEventCommandProcess};
 
    // Create a Nib reference passing the name of the nib file (without the .nib extension)
    // CreateNibReference only searches into the application bundle.
    err = CreateNibReference(CFSTR("main"), &nibRef);
    require_noerr( err, CantGetNibRef );
    
    // Once the nib reference is created, set the menu bar. "MainMenu" is the name of the menu bar
    // object. This name is set in InterfaceBuilder when the nib is created.
    err = SetMenuBarFromNib(nibRef, CFSTR("MenuBar"));
    require_noerr( err, CantSetMenuBar );
    
    // Then create a window. "MainWindow" is the name of the window object. This name is set in 
    // InterfaceBuilder when the nib is created.
    err = CreateWindowFromNib(nibRef, CFSTR("MainWindow"), &window);
    require_noerr( err, CantCreateWindow );
 
    // We don't need the nib reference anymore.
    DisposeNibReference(nibRef);
    
    // The window was created hidden so show it.
    ShowWindow( window );
    
    InstallApplicationEventHandler(NewEventHandlerUPP(appCommandHandler), GetEventTypeCount(cmdEvent), &cmdEvent, 0, NULL);
 
    // Call the event loop
    RunApplicationEventLoop();
    
CantCreateWindow:
CantSetMenuBar:
CantGetNibRef:
    return err;
}