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. *

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Air Video Server HD 2.1.0 - Stream video...
Air Video Server HD streams videos instantly from your computer on your iPhone, iPad, iPod touch or Apple TV. No need to worry about converting or transferring files. We took everything that was... Read more
Duplicate Annihilator 5.7.5 - Find and d...
Duplicate Annihilator takes on the time-consuming task of comparing the images in your iPhoto library using effective algorithms to make sure that no duplicate escapes. Duplicate Annihilator... Read more
BusyContacts 1.0.2 - Fast, efficient con...
BusyContacts is a contact manager for OS X that makes creating, finding, and managing contacts faster and more efficient. It brings to contact management the same power, flexibility, and sharing... Read more
Capture One Pro 8.2.0.82 - RAW workflow...
Capture One Pro 8 is a professional RAW converter offering you ultimate image quality with accurate colors and incredible detail from more than 300 high-end cameras -- straight out of the box. It... Read more
Backblaze 4.0.0.872 - Online backup serv...
Backblaze is an online backup service designed from the ground-up for the Mac.With unlimited storage available for $5 per month, as well as a free 15-day trial, peace of mind is within reach with... Read more
Little Snitch 3.5.2 - Alerts you about o...
Little Snitch gives you control over your private outgoing data. Track background activity As soon as your computer connects to the Internet, applications often have permission to send any... Read more
Monolingual 1.6.4 - Remove unwanted OS X...
Monolingual is a program for removing unnecesary language resources from OS X, in order to reclaim several hundred megabytes of disk space. If you use your computer in only one (human) language, you... Read more
CleanApp 5.0 - Application deinstaller a...
CleanApp is an application deinstaller and archiver.... Your hard drive gets fuller day by day, but do you know why? CleanApp 5 provides you with insights how to reclaim disk space. There are... Read more
Fantastical 2.0 - Create calendar events...
Fantastical is the Mac calendar you'll actually enjoy using. Creating an event with Fantastical is quick, easy, and fun: Open Fantastical with a single click or keystroke Type in your event details... Read more
Cocktail 8.2 - General maintenance and o...
Cocktail is a general purpose utility for OS X that lets you clean, repair and optimize your Mac. It is a powerful digital toolset that helps hundreds of thousands of Mac users around the world get... Read more

Pie In The Sky: A Pizza Odyssey (Games)
Pie In The Sky: A Pizza Odyssey 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: A game about delivering pizza. In space. | Read more »
Android's Popular OfficeSuite Now A...
Once only available for Android devices, OfficeSuite has finally landed on the app store. The Mobile Systems app lets you view, edit, create, and share Word, Excel, and PowerPoint documents as well as convert them to/from PDFs. It's touted as being... | Read more »
Fast & Furious: Legacy's Creati...
| Read more »
N-Fusion and 505's Ember is Totally...
| Read more »
These are All the Apple Watch Apps and G...
The Apple Watch is less than a month from hitting store shelves, and once you get your hands on it you're probably going to want some apps and games to install. Fear not! We've compiled a list of all the Apple Watch apps and games we've been able to... | Read more »
Appy to Have Known You - Lee Hamlet Look...
Being at 148Apps these past 2 years has been an awesome experience that has taught me a great deal, and working with such a great team has been a privilege. Thank you to Rob Rich, and to both Rob LeFebvre and Jeff Scott before him, for helping me... | Read more »
Hands-On With Allstar Heroes - A Promisi...
Let’s get this out of the way quickly. Allstar Heroes looks a lot like a certain other recent action RPG release, but it turns out that while it’s not yet available here, Allstar Heroes has been around for much longer than that other title. Now that... | Read more »
Macho Man and Steve Austin Join the Rank...
WWE Immortals, by Warner Bros. Interactive Entertainment and WWE, has gotten a superstar update. You'll now have access to Macho Man Randy Savage and Steve Austin. Both characters have two different versions: Macho Man Randy Savage Renegade or Macho... | Read more »
Fearless Fantasy is Fantastic for the iF...
I actually had my first look at Fearless Fantasy last year at E3, but it was on a PC so there wasn't much for me to talk about. But now that I've been able to play with a pre-release version of the iOS build, there's quite a bit for me to talk... | Read more »
MLB Manager 2015 (Games)
MLB Manager 2015 5.0.14 Device: iOS Universal Category: Games Price: $4.99, Version: 5.0.14 (iTunes) Description: Guide your favorite MLB franchise to glory! MLB Manager 2015, officially licensed by MLB.com and based on the award-... | Read more »

Price Scanner via MacPrices.net

Apple offering refurbished 27-inch 5K iMacs f...
The Apple Store is offering Apple Certified Refurbished 27″ 3.5GHz 5K iMacs for $2119 including free shipping. Their price is $380 off the price of new models, and it’s the lowest price available for... Read more
16GB iPad mini on sale for $199, save $50
Walmart has 16GB iPad minis (1st generation) available for $199.99 on their online store, including free shipping. Their price is $50 off MSRP. Online orders only. Read more
New 128GB MacBook Airs on sale for $50 off MS...
 B&H Photo has 128GB 11″ and 13″ 2015 MacBook Airs on sale today for $50 off MSRP including free shipping plus NY sales tax only: - 11″ 1.6GHz/128GB MacBook Air (Model #MJVM2LL/A): $849 $50 off... Read more
13-inch 2.6GHz Retina MacBook Pro (refurbishe...
The Apple Store has Apple Certified Refurbished 13″ 2.6GHz/128GB Retina MacBook Pros available for $979 including free shipping. Original MSRP for this model was $1299. Read more
Save up to $600 with Apple refurbished Mac Pr...
The Apple Store is offering Apple Certified Refurbished Mac Pros for up to $600 off the cost of new models. An Apple one-year warranty is included with each Mac Pro, and shipping is free. The... Read more
Samsung Galaxy S 6 and Galaxy S 6 edge U.S. P...
Samsung Electronics America, Inc. has announced the Galaxy S 6 and Galaxy S 6 edge will be available in the U.S. beginning April 10, with pre-orders being accepted now. “We have completely reimagined... Read more
13-inch 2.5GHz MacBook Pro (refurbished) avai...
The Apple Store has Apple Certified Refurbished 13″ 2.5GHz MacBook Pros available for $829, or $270 off the cost of new models. Apple’s one-year warranty is standard, and shipping is free: - 13″ 2.... Read more
Save up to $80 on iPad Air 2s, NY tax only, f...
 B&H Photo has iPad Air 2s on sale for $80 off MSRP including free shipping plus NY sales tax only: - 16GB iPad Air 2 WiFi: $469.99 $30 off - 64GB iPad Air 2 WiFi: $549.99 $50 off - 128GB iPad... Read more
iMacs on sale for up to $205 off MSRP
B&H Photo has 21″ and 27″ iMacs on sale for up to $205 off MSRP including free shipping plus NY sales tax only: - 21″ 1.4GHz iMac: $1019 $80 off - 21″ 2.7GHz iMac: $1189 $110 off - 21″ 2.9GHz... Read more
Färbe Technik Offers iPhone Battery Charge LI...
Färbe Technik, which manufactures and markets of mobile accessories for Apple, Blackberry and Samsung mobile devices, is offering tips on how to keep your iPhone charged while in the field: •... Read more

Jobs Board

DevOps Software Engineer - *Apple* Pay, iOS...
**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* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
Sr. Technical Services Consultant, *Apple*...
**Job Summary** Apple Professional Services (APS) has an opening for a senior technical position that contributes to Apple 's efforts for strategic and transactional Read more
Lead *Apple* Solutions Consultant - Retail...
**Job Summary** Job Summary The Lead ASC is an Apple employee who serves as the Apple business manager and influencer in a hyper-business critical Reseller's store Read more
*Apple* Pay - Site Reliability Engineer - 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
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.