TweetFollow Us on Twitter

Apr 98 - Tips

Volume Number: 14 (1998)
Issue Number: 4
Column Tag: Programmer's Challenge

Apr 98 - Tips & Tidbits

by Steve Sisak

It is easier to quit an app than to close a window because the close window event requires a direct object and a position descriptor to indicate which window. Quitting an app simply requires creating a quit event and sending it. The following code takes a valid target desc (which I'm assuming you already know how to create) and sends a close first window event to the app specified in that target desc.

The code is modified from similar code I used a while back. I may have made some errors in removing stuff or changing identifiers, but it should give you the right idea. Feel free to e-mail any questions about it.

void CloseFrontWindowOfApp( AEAddressDesc * theTargetDescPtr )
{
  AEDesc   frontWindowObjSpecifier;
  AppleEvent   event;
  AppleEvent   reply;
  OSErr  err = noErr;

//initialize descriptors 
  event.descriptorType = typeNull;
  reply.descriptorType = typeNull;
  frontWindowObjSpecifier.descriptorType = typeNull; 

  event.dataHandle = NULL;
  reply.dataHandle = NULL;
  frontWindowObjSpecifier.dataHandle = NULL;  

//create object spec for front window
  err = MyCreateFrontWindowObjSpec( &frontWindowObjSpecifier ) ;
  if ( err )
   goto CLEANUP_SetBounds;

//create apple event-- not sure if close event is in kAECoreSuite?

  err = AECreateAppleEvent( kAECoreSuite, kAEClose,
           theTargetDescPtr, kAutoGenerateReturnID,
           kAnyTransactionID, &event );
  if ( err )
   goto CLEANUP_SetBounds;

//insert direct object into ae  
  err = AEPutParamDesc( &event, keyDirectObject,             &frontWindowObjSpecifier );
  if ( err )
   goto CLEANUP_SetBounds;

//send ae
  err = AESend( &event, &reply, kAENoReply +
      kAENeverInteract +
      kAECanSwitchLayer,
      kAENormalPriority, kAEDefaultTimeout,
                kNoIdleProc, kNoFilterProc );

//dispose descriptors
CLEANUP_SetBounds:;      
  AEDisposeDesc (&event);
  AEDisposeDesc (&reply); 
  AEDisposeDesc (&frontWindowObjSpecifier); 

} //end function


OSErr MyCreateFrontWindowObjSpec( AEDesc *frontWindowObjSpec )
{
  AEDesc   emptySpecifier;
  AEDesc   positionDesc;
  long   thePosition;
  DescType propertyType;
  OSErr  err;


//initialize descriptors
  emptySpecifier.descriptorType = typeNull;
  positionDesc.descriptorType = typeNull;
  propertyDesc.descriptorType = typeNull;  
  
  emptySpecifier.dataHandle = NULL; 
  positionDesc.dataHandle = NULL;
  propertyDesc.dataHandle = NULL; 

//create objspecifier for window 1 of null container
  thePosition = 1;
  err = AECreateDesc( typeLongInteger, (Ptr)(&thePosition),
         sizeof( thePosition ), &positionDesc);
  if ( err )
   goto CLEANUP_MyCreateBoundsObjSpec;
  
  err = CreateObjSpecifier(   cWindow,
              &emptySpecifier, 
              formAbsolutePosition,
              &positionDesc, 
              false,
              frontWindowObjSpec ) ;
  if ( err )
   goto CLEANUP_MyCreateBoundsObjSpec;

  
//dispose descriptors
CLEANUP_MyCreateBoundsObjSpec:;      
  AEDisposeDesc (&windowObjSpecifier);  
  AEDisposeDesc (&positionDesc);

  return err;

}

David T. Pierson
dtp@pluto.njcc.com

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Latest Forum Discussions

See All

Combo Quest (Games)
Combo Quest 1.0 Device: iOS Universal Category: Games Price: $.99, Version: 1.0 (iTunes) Description: Combo Quest is an epic, time tap role-playing adventure. In this unique masterpiece, you are a knight on a heroic quest to retrieve... | Read more »
Hero Emblems (Games)
Hero Emblems 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: ** 25% OFF for a limited time to celebrate the release ** ** Note for iPhone 6 user: If it doesn't run fullscreen on your device... | Read more »
Puzzle Blitz (Games)
Puzzle Blitz 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: Puzzle Blitz is a frantic puzzle solving race against the clock! Solve as many puzzles as you can, before time runs out! You have... | Read more »
Sky Patrol (Games)
Sky Patrol 1.0.1 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0.1 (iTunes) Description: 'Strategic Twist On The Classic Shooter Genre' - Indie Game Mag... | Read more »
The Princess Bride - The Official Game...
The Princess Bride - The Official Game 1.1 Device: iOS Universal Category: Games Price: $3.99, Version: 1.1 (iTunes) Description: An epic game based on the beloved classic movie? Inconceivable! Play the world of The Princess Bride... | Read more »
Frozen Synapse (Games)
Frozen Synapse 1.0 Device: iOS iPhone Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: Frozen Synapse is a multi-award-winning tactical game. (Full cross-play with desktop and tablet versions) 9/10 Edge 9/10 Eurogamer... | Read more »
Space Marshals (Games)
Space Marshals 1.0.1 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.1 (iTunes) Description: ### IMPORTANT ### Please note that iPhone 4 is not supported. Space Marshals is a Sci-fi Wild West adventure taking place... | Read more »
Battle Slimes (Games)
Battle Slimes 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: BATTLE SLIMES is a fun local multiplayer game. Control speedy & bouncy slime blobs as you compete with friends and family.... | Read more »
Spectrum - 3D Avenue (Games)
Spectrum - 3D Avenue 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: "Spectrum is a pretty cool take on twitchy/reaction-based gameplay with enough complexity and style to stand out from the... | Read more »
Drop Wizard (Games)
Drop Wizard 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: Bring back the joy of arcade games! Drop Wizard is an action arcade game where you play as Teo, a wizard on a quest to save his... | Read more »

Price Scanner via MacPrices.net

Our MacBook Price Trackers will show you the...
Our Apple award-winning MacBook Price Trackers are continually updated with the latest information on prices, bundles, and availability for 16″ and 14″ MacBook Pros along with 13″ and 15″ MacBook... Read more
Amazon is offering a 10% discount on Apple’s...
Don’t pay full price! Amazon has 16-inch M4 Pro MacBook Pros (Silver and Black colors) on sale today for 10% off Apple’s MSRP. Shipping is free. These are the lowest prices currently available for 16... Read more
13-inch M4 MacBook Airs on sale for $150 off...
Amazon has new 13″ M4 MacBook Airs on sale for $150 off MSRP right now, starting at $849. Sale prices apply to most colors and configurations. Be sure to select Amazon as the seller, rather than a... Read more
15-inch M4 MacBook Airs on sale for $150 off...
Amazon has new 15″ M4 MacBook Airs on sale for $150 off Apple’s MSRP, starting at $1049. Be sure to select Amazon as the seller, rather than a third-party: – 15″ M4 MacBook Air (16GB/256GB): $1049, $... Read more
Amazon is offering a $50 discount on Apple’s...
Amazon has Apple’s 11th-generation A16 iPads in stock on sale for $50 (or a little more) off MSRP this week. Shipping is free: – 11″ 11th-generation 128GB WiFi iPads: $299 $50 off MSRP – 11″ 11th-... Read more
Clearance 13-inch M1 MacBook Airs available f...
Walmart has clearance, but new, Apple 13″ M1 MacBook Airs (8GB RAM, 256GB SSD) available online for $649, $360 off original MSRP, in Space Gray, Silver, and Gold colors. These are new MacBooks for... Read more
iPad minis on sale for $100 off Apple’s MSRP...
Amazon is offering $100 discounts (up to 20% off) on Apple’s newest 2024 WiFi iPad minis, each with free shipping. These are the lowest prices available for new minis among the Apple retailers we... Read more
AirPods Max headphones on sale for $479, $70...
Amazon has AirPods Max with USB-C on sale for $479.99 in all colors. Shipping is free. Their price is $70 off Apple’s MSRP, and it’s the lowest price available today for AirPods Max. Keep an eye on... Read more
14-inch M4 Pro/M4 Max MacBook Pros on sale th...
Don’t pay full price! Get a new 14″ MacBook Pro with an M4 Pro or M4 Max CPU for up to $320 off Apple’s MSRP this weekend at these retailers…they are the lowest prices available for these MacBook... Read more
Get a 15-inch M4 MacBook Air for $150 off App...
A couple of Apple retailers are offering $150 discounts on new 15″ M4 MacBook Airs this weekend. Prices at these retailers start at $1049: (1): Amazon has new 15″ M4 MacBook Airs on sale for $150 off... Read more

Jobs Board

All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.