TweetFollow Us on Twitter

Aug 92 Tips
Volume Number:8
Issue Number:4
Column Tag:Tips & Tidbits

Tips & Tidbits

By Neil Ticktin, Editor-in-Chief

MacTutor has a new column called “Tips and Tidbits”. This column is your opportunity to spread the word about little bits of information that you find out about. These tidbits can be programming related or they can be user tips that are particularly useful to programmers.

We really want to hear from you. MacTutor will pay $25 for every tip used, and the Tip of the Month will receive $50. To submit a tip, send in a letter to the magazine. Remember, AppleLink is our preferred method of communication, but feel free to send something via US Mail. If you do send mail, enclose a printed copy and a disk copy of the letter so that it does not have to be retyped.

Let us know what you think. Remember, this is your magazine. Try ‘em out and let us know...

Tip of the month

A frequently asked question is “How to make a menu bar within a window, but makeit SIMPLE?” I have found the answer deep in the UPMG folder on the 7.0 Beta-Bang CD-Rom. This folder is a “must read” for finding clever and simple answers to many questions of this kind. I have written the code below for better readability, but the credit for the trick must be given to the UPMG file. Before calling PopUpMenuSelect, install a MenuHook. In the hook, if the mouse is out of the menu rect (and out of the menu title rect), post a mouseUp event to exitPopUpMenuSelect.

Doing it this way, the user can browse between pop-up menus without releasing themouse button, exactly like in the real menu bar. Warning: abuse of this trick will quickly drive your program to a very disconcerting user-interface. Are you really sure you need a menu bar in thiswindow?

Benoît Widemann

/* 1 */

// Global variables

short gCurrentMenu;// current menu index
MenuHandle gMenu[NUMBER_OF_MENUS];
Rect gMenuTitleRect[NUMBER_OF_MENUS];  // menus title rects in window

// There was a click in window's menubar
// Returns the item selected or 0 if no selection
// If the returned item is non-zero, the menu index is gCurrentMenu

short windowMenuSelect(WindowPtr theWindow)
{
   ProcPtr saveMenuHook;
   Point p;
   short selectedItem;

   SetWRefCon(theWindow, SetCurrentA5());  // save our A5 in window refcon
   saveMenuHook = MenuHook;// save current value in MenuHook
   MenuHook = (ProcPtr)myMenuHook; // install our menu hook
   SetPort(theWindow);
   while (Button()){   // don't use StillDown here!!
   GetMouse(&p);
   for (gCurrentMenu=0; gCurrentMenu<NUMBER_OF_MENUS; gCurrentMenu++) 
 {
   // find in which menu title rect is the mouse
   if (PtInRect(p, &gMenuTitleRect[gCurrentMenu])) {
   InvertRect(&gMenuTitleRect[gCurrentMenu]);
   p.h = gMenuTitleRect[gCurrentMenu].left+1;
   p.v = gMenuTitleRect[gCurrentMenu].bottom+1;
   LocalToGlobal(&p);
   // use only the item part returned
   selectedItem = (short)(PopUpMenuSelect(gMenu[gCurrentMenu], p.v, p.h, 
0) &
0x0000FFFF);
   InvertRect(&gMenuTitleRect[gCurrentMenu]);
   break;
   }
   }
   }
   MenuHook = saveMenuHook;// restore Menu Hook
   return(selectedItem);
}

// the menu hook

pascal void myMenuHook()
{
   Point p;
   long sysA5;

   sysA5 = SetA5(GetWRefCon(FrontWindow())); // restore our A5
   GetMouse(&p);
   if (p.v < 20 && !PtInRect(p, &gMenuTitleRect[gCurrentMenu])) {
   (void)PostEvent(mouseUp, nil);  // exit PopUpMenuSelect
   }
   (void)SetA5(sysA5); // restore system A5
}

NEED FOR SPEED

To execute system routines efficiently, you can by-pass the trap dispatcher byjumping to the routine yourself. Most practicle in tight loops. Take for example the BLockMove routine. Rewrite it as MyBlockMove:

/* 2 */

CONST
  kBlockMoveNum = $A02E; 
{Get the BlockMove Trap word from Inside Macintosh Volume III, Appendix 
C}
VAR
  blockMoveAddress:LongInt;
BEGIN
  blockMoveAddress := GetTrapAddress(kBlockMoveNum);
  start loop...
    MyBlockMove(source,dest,size, blockMoveAddress);
  end loop...
END

Write MyBlockMove in assembler like this:

;3

PROCEDURE MyBlockMove
MOVE.L     A2,D2      /*Save off A2. We'll need it later
MOVE.L     (A7)+,D1   /*Move Return address into D1
MOVEA.L    (A7),A2    /*Put BlockMove address into A2
MOVE.L     (A7)+,D0   /*Place size into D0
MOVEA.L    (A7)+,A1   /*Place destination Ptr into A1
MOVEA.L    (A7)+,A0   /*Place source Ptr into A0
MOVE.L     D1,(A7)    /*BlockMove trashes D1 & D2.
                      /*Save D1(Return address) on stack
MOVE.L     D2,-(A7)   /*Save D2(value of A2) on stack
JSR        (A2)       /*Jump to BlockMove
MOVEA.L    (A7)+,A2   /*Restore A2
MOVEA.L    (A7)+,A1   /*Place Return address into A1
JMP        (A1)       /*Jump to Return Address

MyBlockMove must be in a resident segment!!! For any questions, send an applelink to ISS.

Mark Hajek

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

OmniOutliner Pro 4.6 - Pro version of th...
OmniOutliner Pro is a flexible program for creating, collecting, and organizing information. Give your creativity a kick start by using an application that's actually designed to help you think. It's... Read more
Alfred 3.1 - Quick launcher for apps and...
Alfred is an award-winning productivity application for OS X. Alfred saves you time when you search for files online or on your Mac. Be more productive with hotkeys, keywords, and file actions at... Read more
OmniOutliner 4.6 - Organize your ideas,...
OmniOutliner is a flexible program for creating, collecting, and organizing information. Give your creativity a kick start by using an application that's actually designed to help you think. It's... Read more
Default Folder X 5.0.6 - Enhances Open a...
Default Folder X attaches a toolbar to the right side of the Open and Save dialogs in any OS X-native application. The toolbar gives you fast access to various folders and commands. You just click on... Read more
Adobe Creative Cloud 3.8.0.310 - Access...
Adobe Creative Cloud costs $19.99/month for a single app, or $49.99/month for the entire suite. Introducing Adobe Creative Cloud desktop applications, including Adobe Photoshop CC and Illustrator CC... Read more
MYStuff Pro 2.0.25 - Create inventories...
MYStuff Pro is the most flexible way to create detail-rich inventories for your home or small business. Add items to MYStuff by dragging and dropping existing information, uploading new images, or... Read more
Viber 6.2.0 - Send messages and make cal...
Viber lets you send free messages and make free calls to other Viber users, on any device and network, in any country! Viber syncs your contacts, messages and call history with your mobile device, so... Read more
Data Rescue 4.2.3 - Powerful hard drive...
Use Data Rescue to recover: crashed, corrupted or non-mounting hard drive deleted, damaged, or lost files reformatted or erased hard drive One powerful new feature found in Data Rescue 4 is... Read more
Microsoft Remote Desktop 8.0.34 - Connec...
With Microsoft Remote Desktop, you can connect to a remote PC and your work resources from almost anywhere. Experience the power of Windows with RemoteFX in a Remote Desktop client designed to help... Read more
Microsoft Remote Desktop 8.0.34 - Connec...
With Microsoft Remote Desktop, you can connect to a remote PC and your work resources from almost anywhere. Experience the power of Windows with RemoteFX in a Remote Desktop client designed to help... Read more

Find out the story behind League of Ange...
If you’re looking for a new thrilling MMORPG to play with your friends then you’ll be excited to hear that there is a sequel to one of the most well known titles in the genre – namely League of Angels 2. With a brand new 3D engine offering... | Read more »
Naruto Shippuden: Ultimate Ninja Blazing...
I'm not sure if it's possible to say you are an anime fan but also never have seen one episode of Naruto. If it is, then I resemble that remark, and if not, I offer a hearty apology. [Read more] | Read more »
5 mobile games that let you explore spac...
No Man's Sky hasn't exactly turned out to be everything it was promised. Though its core concept of exploring an unimaginably vast universe of different planets is an intriguing one, the execution has left many PS4 and PC gamers feeling like they... | Read more »
Mummy madness in new action game Tomb He...
Hot on the tail of Bump Hero, ZPlay is giving gamers another reason to get screen bashing with a brand new release. Tomb Heroes is a challenging action game in which you battle enemies in various tombs around the world. You can select from nine... | Read more »
Siralim 2 (RPG / Roguelike) (Games)
Siralim 2 (RPG / Roguelike) 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: Siralim 2 is an old-school monster catching RPG. Summon and customize hundreds of creatures to fight for you as... | Read more »
Clean Text (Productivity)
Clean Text 1.0 Device: iOS Universal Category: Productivity Price: $3.99, Version: 1.0 (iTunes) Description: | Read more »
Gemini - A Journey of Two Stars (Games)
Gemini - A Journey of Two Stars 1.0.1 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0.1 (iTunes) Description: *** SPECIAL LAUNCH SALE: $2.99 (25% off) *** "A mesmerizing and unexpectedly emotional journey." -- Los... | Read more »
How to get four NFL superstars for your...
Even though you're probably well on your way to building a top notch squad for the new season in Madden NFL Mobile, let's say you could beef it up by adding Rob Gronkowski, Antonio Brown, Von Miller, and Todd Gurley to your roster. That's... | Read more »
Cartoon Network Superstar Soccer: Goal!!...
Cartoon Network Superstar Soccer: Goal!!! – Multiplayer Sports Game Starring Your Favorite Characters 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: Become a soccer superstar with your... | Read more »
NFL Huddle: What's new in Topps NFL...
Can you smell that? It's the scent of pigskin in the air, which either means that cliches be damned, pigs are flying in your neck of the woods, or the new NFL season is right around the corner. [Read more] | Read more »

Price Scanner via MacPrices.net

RESCUECOM 2016 Semi-Annual Computer Reliabili...
The beginning of a new school year is upon us again, in which students and parents have some very important choices to make, often including the purchase of a computer or tablet. Whether you are... Read more
VRS Design Damda Glide Series iPhone 7 and 7...
What makes the Damda Glide Series for the iPhone 7 and iPhone 7 Plus special? Case maker VRS Design says its Damda Glide Series is the first mobile case to incorporate a semi-automatic mechanism for... Read more
Apple refurbished iMacs available for up to $...
Apple has Certified Refurbished 2015 21″ & 27″ iMacs available for up to $350 off MSRP. Apple’s one-year warranty is standard, and shipping is free. The following models are available: - 21″ 3.... Read more
Clearance 2015 13-inch MacBook Airs available...
B&H Photo has clearance 2015 13″ MacBook Airs available for $350 off original MSRP. Shipping is free, and B&H charges NY sales tax only: - 13″ 1.6GHz/4GB/128GB MacBook Air (MJVE2LL/A): $829... Read more
Check Apple prices on any device with the iTr...
MacPrices is proud to offer readers a free iOS app (iPhones, iPads, & iPod touch) and Android app (Google Play and Amazon App Store) called iTracx, which allows you to glance at today’s lowest... Read more
Save $120 with Apple refurbished Time Capsule...
Apple has certified refurbished Time Capsules available for $120 off MSRP. Apple’s one-year warranty is included with each Time Capsule, and shipping is free: - 2TB Time Capsule: $179, $120 off (not... Read more
9-inch 32GB iPad Pros on sale for $70 off MSR...
B&H Photo has 9″ 32GB WiFi Apple iPad Pros on sale for $70 off MSRP, each including free shipping. B&H charges sales tax in NY only: - 9″ Space Gray 32GB WiFi iPad Pro: $529 $70 off MSRP - 9... Read more
Mac minis on sale for up to $140 off MSRP
Adorama has Mac minis on sale for up to $100 off MSRP including free shipping plus NY & NJ sales tax only: - 1.4GHz Mac mini: $449 $50 off MSRP - 2.6GHz Mac mini: $649 $50 off MSRP Amazon has the... Read more
Back To School with OtterBox Essentials
Back to school means back to an environment that is tough on tech. OtterBox has the back to school essentials you need to keep tech safe from drops, bumps, scratches and hallway havoc. Check out the... Read more
VRS Design Releases New iPhone 7 Plus Case Li...
With a device as large and costly as the iPhone 7 Plus, it is primal instinct to protect it from potential damage. According to a study by SquareTrade in 2012, iPhone damages cost Americans roughly $... Read more

Jobs Board

*Apple* Solutions Consultant - Apple (United...
# Apple Solutions Consultant Job Number: 51218354 Fredericksburg, Virginia, United States Posted: Aug. 18, 2016 Weekly Hours: 40.00 **Job Summary** As an Apple Read more
*Apple* Retail - Multiple Positions - Apple,...
Job Description:SalesSpecialist - Retail Customer Service and SalesTransform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
*Apple* /Mac Support Engineer - GFI Digital,...
FI Digital, Inc. is currently seeking candidates for a full time Apple Support Engineer to add to our Maryland Heights, Missouri IT team. Candidates must be dynamic Read more
*Apple* Solutions Consultant - Apple (United...
Apple Solutions ConsultantJob Number: 51218534Pleasant Hill, California, United StatesPosted: Aug. 18, 2016Weekly Hours: 40.00Job SummaryAs an Apple Solutions Read more
*Apple* Solutions Consultant - Apple (United...
# Apple Solutions Consultant Job Number: 51443201 Mishawaka, Indiana, United States Posted: Aug. 25, 2016 Weekly Hours: 40.00 **Job Summary** As an Apple Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.