TweetFollow Us on Twitter

Summer 91 - PRINT HINTS FROM LUKE & ZZ

PRINT HINTS FROM LUKE & ZZ

HELP FOR YOUR DIALOG APPENDAGES

PETE "LUKE" ALEXANDER and Zz

[IMAGE Luke+Zz.GIF]

Zz speaks

OK, so you're cruising your source like a madman trying to get all those little System 7.0 changes in before that target ship date (whatever it is this week), and you notice that the items you've added to the Page Setup/Print dialogs don't have any Balloon HelpTM--you know, those items like Reverse Pages, Print Hidden Text, or even Use Fractional Font Widths. (Coming up with meaningful names for these items, in four words or less, was a little tricky.) But now there's help, literally, in System 7.0. Great! Then you remember that there wasn't a simple Printing Manager call to add those items to the dialogs. You had to resort to the technique described in Technical Note #95, How to Add Items to the Print Dialogs. As you remember, it used a set of procedures that modified the Printing Manager's (that is, the selected print driver's) dialog item list (DITL) resource.

Remembering the actual code in Tech Note #95, you consider that the Standard File package shipped with 7.0 has a new call that allows you to append things to its dialog, including Help Manager resources. Feeling relieved, you think, "Ah, there must be a similar call in the new Pri . . ." But no, the new printing architecture has been delayed. A quick scan shows that there isn't even a Printing Manager chapter inInside Macintosh Volume VI! Help!!! It's not as bad as you might expect. If you consult Tech Note #95, you'll see the rather husky AppendDITL procedure. This procedure is called to append the items that you want to add to the dialog item list being used by the particular dialog (Page Setup or Print).

The sample code from Tech Note #95 calls some Printing Manager routines that let you get in after the DITL resource has been loaded, but before the dialog has been displayed. You add your items to the resource in memorywithout calling either ChangedResource or WriteResource. The driver then uses this DITL and displays your items. Once the dialog is dismissed, the resource is purged, and the driver doesn't even know you were there. Life is good.

As you've probably guessed by now, you're going to have to append to the Help Manager dialog item help ('hdlg') resource in the same way that you appended to the DITL resource. You simply scan the list to the end, and then append the appropriate items. The 'hdlg' resource is purged in the same way as the DITL resource, so once again you make no permanent changes.

On the next page is the definition of the Append2hdlg procedure. We start by getting both 'hdlg' resources into memory. It's safe to assume the source 'hdlg' resource hasn't been loaded yet, but we use the SetResLoad trick on the destination in case it has already been loaded. (The SetResLoad trick is a method for determining whether a resource has already been loaded. This trick is important, since in cases where the resource has already been loaded by the system, you don't want to unload it or permanently change any of its resource attributes.) The trick works like this: You SetResLoad to false so that the Resource Manager doesn't load the resource data; instead, it just creates an empty resource handle that can be passed to routines like GetResInfo. You then call GetResource on the resource you're looking for. If the handle returned is empty (that is, points to nil), you know the resource isn't already in memory. If the handle returned is not empty, something else (like the system) has already loaded it before you called GetResource. In this example, since we use HGetState and HSetState to preserve the resource attributes, and we want the resource to be left in memory when we're done, we don't really need to know if it was already loaded. The SetResLoad code is included for anyone who is planning on modifying this code to do more.

Next we initialize our locals. We want to point srcPtr to the place in the source resource that we want to start copying from. To do this, we need to point past the "missing item." The size of the item is stored in the resource just after the resource header. We first use srcPtr to get the size (in bytes) of the missing item. Using that size, we can calculate the starting location for the copy. We don't actually initialize srcPtr yet, since resizing the destination handle could move memory. Next we initialize dstPtr and dstLength. In the process, we resize dstHdl to make room for the items we're going to append. Once SetHandleSize has been called, we also initialize srcPtr. Now that srcPtr and dstPtr are set up, we use BlockMove to copy the new items into the destination resource. After unlocking the resource handles, we update the numItems field of the destination resource so that the Help Manager will know how many items we added. Finally, we release the source resource. We don't want to release the destination, since our changes would then be lost.

void Append2hdlg(srcResID, dstResID)
short   srcResID, dstResID;
{
    Handle              srcHdl, dstHdl;
    Ptr                 srcPtr, dstPtr;
    short               srcLength, dstLength;
    short               missingItmSz;
    SignedByte      dstHState;
    
    srcHdl = GetResource('hdlg', srcResID); 
    if (srcHdl != nil) {
        SetResLoad(false);  /* System resource, make sure it's not */
        dstHdl = GetResource('hdlg', dstResID); /* already loaded. */
        SetResLoad(true);
        if (*dstHdl == 0)
            dstHdl = GetResource('hdlg', dstResID);
        dstHState = HGetState(dstHdl);
        
        if (dstHdl != nil) {
            srcPtr = (Ptr)*srcHdl + sizeof(hdlgHeader);
            missingItmSz = *((IntPtr)srcPtr);
            srcLength = GetHandleSize(srcHdl) - (sizeof(hdlgHeader)
                - missingItmSz);

            dstLength = GetHandleSize(dstHdl);
            SetHandleSize(dstHdl, dstLength + srcLength);
            if (MemError() != noErr) {
                DebugStr("\pMemError");
                            /* Use this error handler, go to jail. */
                ExitToShell();              /* It's the law! */
            }
            dstPtr = (Ptr)*dstHdl + dstLength;
            srcPtr = (Ptr)*srcHdl + sizeof(hdlgHeader) +
                missingItmSz;

            HLock(srcHdl);
            HLock(dstHdl);

            BlockMove(srcPtr, dstPtr, srcLength);

            HUnlock(srcHdl);
            HSetState(dstHdl, dstHState);

            ((hdlgHeaderPtr)*dstHdl)->hdlgNumItems +=
                ((hdlgHeaderPtr)*srcHdl)->hdlgNumItems;
        }
    }
    ReleaseResource(srcHdl);
}

So that's about it. Append2hdlg is a lot smaller than AppendDITL because we don't actually need to parse the contents of the 'hdlg' resource. Although it's another piece of code to be added to your application, this should be quite painless, unlike other Printing Manager exercises. Don't forget to read the Help Manager chapter of Inside Macintosh Volume VI for guidelines on the contents of your Help Manager balloons. See ya next time . . .


SCOTT "ZZ" ZIMMERMAN loves Disneyland--we think it's because he's really a cartoon character at heart. When asked, he admitted to wanting to be Captain Hook when he grew up. His favorite ride is Peter Pan because it's romantic, cool, dark, and the main character is a kid who never grew up. Except for the romantic, cool, and dark parts, it reminds him a lot of life at Apple. When he's at Apple he makes sure he drinks at least 15 gallons of Mountain Dew a day--he says it powers the mechanism for his retractable Barbie Doll hair. In closing, we'll leave you with his favorite question, "How can I miss you if you won't leave?"*

For more information on the format and use of the "missing item" in an 'hdlg' resource, and much more about Balloon Help, see the Help Manager chapter in Inside Macintosh Volume VI. *

 
AAPL
$97.99
Apple Inc.
-0.39
MSFT
$43.50
Microsoft Corpora
-0.39
GOOG
$585.57
Google Inc.
-0.04

MacTech Search:
Community Search:

Software Updates via MacUpdate

Mellel 3.3.6 - Powerful word processor w...
Mellel is the leading word processor for OS X and has been widely considered the industry standard since its inception. Mellel focuses on writers and scholars for technical writing and multilingual... Read more
LibreOffice 4.3.0.4 - Free Open Source o...
LibreOffice is an office suite (word processor, spreadsheet, presentations, drawing tool) compatible with other major office suites. The Document Foundation is coordinating development and... Read more
Freeway Pro 7.0 - Drag-and-drop Web desi...
Freeway Pro lets you build websites with speed and precision... without writing a line of code! With it's user-oriented drag-and-drop interface, Freeway Pro helps you piece together the website of... Read more
Drive Genius 3.2.4 - Powerful system uti...
Drive Genius is an OS X utility designed to provide unsurpassed storage management. Featuring an easy-to-use interface, Drive Genius is packed with powerful tools such as a drive optimizer, a... Read more
Vitamin-R 2.15 - Personal productivity t...
Vitamin-R creates the optimal conditions for your brain to work at its best by structuring your work into short bursts of distraction-free, highly focused activity alternating with opportunities for... Read more
Toast Titanium 12.0 - The ultimate media...
Toast Titanium goes way beyond the very basic burning in the Mac OS and iLife software, and sets the standard for burning CDs, DVDs, and now Blu-ray discs on the Mac. Create superior sounding audio... Read more
OS X Yosemite Wallpaper 1.0 - Desktop im...
OS X Yosemite Wallpaper is the gorgeous new background image for Apple's upcoming OS X 10.10 Yosemite. This wallpaper is available for all screen resolutions with a source file that measures 5,418... Read more
Acorn 4.4 - Bitmap image editor. (Demo)
Acorn is a new image editor built with one goal in mind - simplicity. Fast, easy, and fluid, Acorn provides the options you'll need without any overhead. Acorn feels right, and won't drain your bank... Read more
Bartender 1.2.20 - Organize your menu ba...
Bartender lets you organize your menu bar apps. Features: Lets you tidy your menu bar apps how you want. See your menu bar apps when you want. Hide the apps you need to run, but do not need to... Read more
TotalFinder 1.6.2 - Adds tabs, hotkeys,...
TotalFinder is a universally acclaimed navigational companion for your Mac. Enhance your Mac's Finder with features so smart and convenient, you won't believe you ever lived without them. Tab-based... Read more

Latest Forum Discussions

See All

Urban Trial Freestyle Review
Urban Trial Freestyle Review By Blake Grundman on July 30th, 2014 Our Rating: :: RIDIN' DIRTYUniversal App - Designed for iPhone and iPad A rough ride that has trouble keeping its wheels on the track.   | Read more »
Take Note! Noteshelf Has Recieved a Big...
Take Note! Noteshelf Has Recieved a Big Update. Posted by Jessica Fisher on July 30th, 2014 [ permalink ] iPad Only App - Designed for the iPad | Read more »
Cubama Review
Cubama Review By Nadia Oxford on July 30th, 2014 Our Rating: :: TETRIIIIIS IIIIIN SPAAAAACE!Universal App - Designed for iPhone and iPad With its addictive challenge and interesting premise, Cubama is frantic screen-tapping fun.   | Read more »
Become a Guardians of Galactic Peace Wit...
Become a Guardians of Galactic Peace With the New Spacefaring Sim, Kairobotica. Posted by Jessica Fisher on July 30th, 2014 [ permalink ] | Read more »
Soul Guardians: Age of Midgard Review
Soul Guardians: Age of Midgard Review By George Fagundes on July 30th, 2014 Our Rating: :: SO MUCH GRIND IT CRUNCHESUniversal App - Designed for iPhone and iPad Swords and trading cards are fun, right? So is Soul Guardians: Age of... | Read more »
NFL Fantasy Football App Redesigned Ahea...
NFL Fantasy Football App Redesigned Ahead of Upcoming 2014 Season Posted by Ellis Spice on July 30th, 2014 [ permalink ] | Read more »
Matter Review
Matter Review By Jennifer Allen on July 30th, 2014 Our Rating: :: ORIGINAL PHOTO MANIPULATIONUniversal App - Designed for iPhone and iPad Matter lets you add geometric 3d shapes to your images and manipulate things so each image... | Read more »
Note Review
Note Review By Jennifer Allen on July 29th, 2014 Our Rating: :: TOO SIMPLEiPhone App - Designed for the iPhone, compatible with the iPad Note is a note taking app that’s a little too short on features to be worth its asking price... | Read more »
Chainsaw Warrior Goes on Sale & Ther...
Chainsaw Warrior Goes on Sale & There’s a Chance to Win a Copy of the Original Board Game Posted by Jennifer Allen on July 29th, 2014 [ permalink | Read more »
It Came From Canada: Tiny Tower Vegas
If you go to a casino, you might make a lot of money. If you run a casino, you’re guaranteed to make a lot of money. The choice seems pretty obvious. So while waiting for your shady real estate deals to move forward, get prepared with Tiny Tower... | Read more »

Price Scanner via MacPrices.net

More iPad Upgrade Musings – The ‘Book Mystiqu...
Much discussed recently, what with Apple reporting iPad sales shrinkage over two consecutive quarters, is that it had apparently been widely assumed that tablet users would follow a two-year hardware... Read more
13-inch 2.5GHz MacBook Pro on sale for $999,...
Best Buy has the 13″ 2.5GHz MacBook Pro available for $999.99 on their online store. Choose free shipping or free instant local store pickup (if available). Their price is $100 off MSRP. Price is... Read more
Save up to $300 on an iMac with Apple refurbi...
The Apple Store has Apple Certified Refurbished iMacs available for up to $300 off the cost of new models. Apple’s one-year warranty is standard, and shipping is free. These are the best prices on... Read more
WaterField Unveils 15″ Outback Solo & 13″...
Hard on the heels of Apple’s refreshed MacBook Pro Retina laptops announcement, WaterField Designs has unveiled a 15-inch version of the waxed-canvas and leather Outback Solo and a 13-inch version of... Read more
New Roxio Toast 12 Delivers Digital Media Pow...
Roxio Toast 12 is a hub for sharing digital media to virtually any platform or device. has introduced two new additions to its Roxio Toast product family – Roxio Toast 12 Titanium and Roxio Toast 12... Read more
The lowest prices on leftover Retina MacBook...
Best Buy has dropped prices on leftover 13″ and 15″ Retina MacBook Pros by up to $300 off original MSRP on their online store for a limited time. Choose free local store pickup (if available) or free... Read more
Apple Updates MacBook Pro with Retina Display...
Apple today updated its MacBook Pro with Retina display with faster processors and double the amount of memory in both entry-level configurations. MacBook Pro with Retina display features a Retina... Read more
Up to $250 price drop on leftover 15-inch Mac...
B&H Photo has dropped prices on 2013 15″ Retina MacBook Pros by as much as $250 off original MSRP. Shipping is free, and B&H charges NY sales tax only: - 15″ 2.3GHz Retina MacBook Pro: $2349... Read more
Updated MacBook Pro Price Trackers
We’ve updated our MacBook Pro Price Trackers with the latest information on prices, bundles, and availability on the new 2014 models from Apple’s authorized internet/catalog resellers as well as... Read more
Apple updates MacBook Pros with slightly fast...
Apple updated 13″ and 15″ Retina MacBook Pros today with slightly faster Haswell processors. 13″ models now ship with 8GB of RAM standard, while 15″ MacBook Pros ship with 16GB across the board. Most... Read more

Jobs Board

Sr Software Lead Engineer, *Apple* Online S...
Sr Software Lead Engineer, Apple Online Store Publishing Systems Keywords: Company: Apple Job Code: E3PCAK8MgYYkw Location (City or ZIP): Santa Clara Status: Full Read more
*Apple* Solutions Consultant (ASC) - Apple (...
**Job Summary** The ASC is an Apple employee who serves as an Apple brand ambassador and influencer in a Reseller's store. The ASC's role is to grow Apple Read more
Sr. Product Leader, *Apple* Store Apps - Ap...
**Job Summary** Imagine what you could do here. At Apple , great ideas have a way of becoming great products, services, and customer experiences very quickly. Bring Read more
*Apple* Solutions Consultant (ASC) - Apple (...
**Job Summary** The ASC is an Apple employee who serves as an Apple brand ambassador and influencer in a Reseller's store. The ASC's role is to grow Apple Read more
*Apple* Solutions Consultant (ASC) - Apple (...
**Job Summary** The ASC is an Apple employee who serves as an Apple brand ambassador and influencer in a Reseller's store. The ASC's role is to grow Apple Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.