TweetFollow Us on Twitter

Oct 94 Tips
Volume Number:10
Issue Number:10
Column Tag:Tips &Tidbits

Related Info: Color Quickdraw

Tips &Tidbits

By Scott T Boyd, Editor

Note: Source code files accompanying article are located on MacTech CD-ROM or source code disks.

Tip Of The Month

Faster Color

RGBForeColor and RGBBackColor can take a surprising amount of time, especially if your main drawing loop calls both routines before most drawing operations. Even if you call RGBForeColor with the color that’s currently foremost, it still recalculates the best possible foreground color! By remembering the results of RGBForeColor and RGBBackColor, you can significantly increase your drawing speed; this example program shows a drawing speed increase of 20%!

The program is written to be pasted into a brand new Think C Project; no MacTraps library is required here. It dumps you into MacsBug at the end with location $40 holding the unoptimized time and $44 holding the optimized time. You can use locations $40 through $5B, inclusive, for debugging purposes.

/* 1 */
#include <QuickDraw.h>
#include <Windows.h>
#include <Palettes.h>
#include <Events.h>

void main(void) {
    CWindowRecord   cwr;
    WindowPtr       wp;
    Rect            bounds = {100, 50, 100 + 256, 50 + 100};
    RGBColor        theColor;
    unsigned short  i, lp;
    unsigned short  start, stop, inc;
    long            startT, stopT;
    long            ColorIndex[1000];
    short           optimized;

    InitGraf( NewPtr(2000) + 1000);

    wp = NewCWindow(&cwr,&bounds,"\pFill",TRUE,zoomDocProc,0,TRUE,237);
    OffsetRect(&bounds, -bounds.left,;

    for (optimized = 0; optimized <= 1; optimized++) {
        startT = TickCount();
        if (optimized) {
            for (i = 0; i < 256 * 255; i += 256) {
       = i;
       = i;
       = i;
                ColorIndex[i >> 8] = cwr.port.fgColor;
        PenPat((Pattern *)"\xF0\xF0\xF0\xF0\xF0\xF0\xF0\xF0");
        for (lp = 0; lp < 99; lp++) {
            MoveTo(0, 0);
            if (lp & 1) {
                start = 0;
                inc = 256;
                stop = 256 * 255;
            } else {
                stop = 0;
                start = 256 * 255;
                inc = -256;
            for (i = start; i != stop; i += inc) {
                if (!optimized) {
 = i;
 = 65536 - 256 - i;
                } else {
 = i;
                    cwr.port.fgColor =
                        ColorIndex[ >> 8];
 = 65536 - 256 - i;
                    cwr.port.bkColor =
                        ColorIndex[ >> 8];
                Line(100, 0);
                Move(-100, 1);
        stopT = TickCount();
        if (!optimized) {
            *(long *)0x40 = stopT - startT;
        } else {
            *(long *)0x44 = stopT - startT;
    DebugStr("\p;dm 40");

- Jörg ‘jbx’ Brown

San Francisco, CA

Got a developer tip you’ve been keeping to yourself but really need to share? Think you have a better trick up your sleeve? Send us your tips and tricks, especially programming-related tips, but don’t hold back if you’ve got programmer’s user tips.

We want your tips! We pay $25 for every tip used, and $50 for Tip of the Month. You can take your award in orders or subscriptions if you prefer.

Make sure code compiles, and send tips by e-mail. See page two for our addresses.

Not Such A Drag After All

The drag manager is really cool and can make apps a lot more intuitive, but it’s a pain to debug since process switches are disabled while drags occur. Since both Think C’s and Metrowerks’ debugger require these, you cannot use them. Never fear! You can use The Debugger!

While we’re on the subject, here’s a gotcha for you. Watch out for a bug that causes deadlock if you call WaitNextevent from a drag receive handler.

- Rod Magnuson,

Cupertino, CA

Going Faster with Symantec TPM

Symantec C++, both versions 6.0 and 7.0, do not have the compilers as part of Think Project Manager. Instead, they are kept as quasi-standalone applications inside the Translators folder (located in the Symantec C++ folder). This goes for the C, C++, and rez compilers, as well as the .o converter. When the user tells Think Project Manager to compile a file, TPM looks at the file’s extension (such as .cp for a C++ file), and launches the appropriate compiler (or translator, as Symantec calls them). This is documented in the Symantec manuals.

What isn’t documented, however, is the process by which TPM launches the translators. As it is shipped from the factory, when TPM is launched, it turns around and launches the C++ translator and keeps it in memory. The C translator is left on the disk, and called when necessary. This works great if you do most of your work in C++. But if you’re like me, and work mostly in C, this slows down the compilation process because every time a C file is to be compiled, the C translator must launched and loaded into memory, while the C++ translator sits there in memory with nothing to do.

What’s a C user to do? Simply modify the C and C++ translators to work the way you want them to. Using ResEdit (or resource editor of your choice), open ‘INFO’ resource number 0 in the translator named Think C (Symantec graciously includes a ResEdit template for this). Change the setting of Memory Resident Translator? from 0 to 1. Close and save your changes. Voila! The C translator will now be loaded and kept in memory by TPM when it is launched. In one simple step, C compiles are now speeded up. The more files that are being compiled, the greater the speed increase. For instance, a one-file compile is not speeded up much, but if you’re working with large projects, the speed increase can be significant.

If you want to free up some memory, you can also modify the C++ translator (named Symantec C++) to not be memory resident.

- Chris Hawk

San Francisco, CA


Community Search:
MacTech Search:

Software Updates via MacUpdate

Facility 47 (Games)
Facility 47 1.0.1 Device: iOS Universal Category: Games Price: $3.99, Version: 1.0.1 (iTunes) Description: You wake up alone and freezing in an icy cell. You try the cell door but it’s locked, it seems that you are stuck with no... | Read more »
The Walking Dead: No Man’s Land guide -...
A new update for The Walking Dead: No Man’s Land was released last week, making it the perfect time for you to head back to your base and take out some walkers. Here’s the lowdown on what’s new to the game, and how to take advantage. [Read more] | Read more »
Goat Rider guide - Tips and tricks to st...
We've all been there. One second, we're riding high on a crazed goat, and the next, we've been tossed off it like someone who's no good at goat ridin'. [Read more] | Read more »
Real Boxing 2 CREED: How to become a gre...
Just in time for Rocky fans who can’t wait to see CREED, the latest movie, we have the official tie-in game,Real Boxing 2 CREED. It builds on the success of its predecessor and there’s lots to take in so we at 148apps thought we’d run you through... | Read more »
CoinOp Heroes 2 guide - How to build an...
CoinOp Heroes 2 justlaunched and, like all clickers, it's dangerously addictive stuff. You have to furiously tap your screen to defeat wave after wave of foes and earn an insane amount of cash to spend on character upgrades and an army of minions... | Read more »
Dr. Panda Firefighters (Education)
Dr. Panda Firefighters 1.0.1 Device: iOS Universal Category: Education Price: $2.99, Version: 1.0.1 (iTunes) Description: FIGHT FIRES AND SAVE THE DAY!Work together with Dr. Panda and his firefighting team to rescue his trapped... | Read more »
Puddle + (Games)
Puddle + 1.0 Device: iOS iPhone Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: Puddle is back in a new "+" edition featuring enhanced graphics, new videos and Apple TV support ! No IAP and No Ads. Dive into Puddle... | Read more »
Football Manager Mobile 2016 (Games)
Football Manager Mobile 2016 7.0.0 Device: iOS Universal Category: Games Price: $8.99, Version: 7.0.0 (iTunes) Description: Football Manager Mobile 2016 is designed to be played on the move and is the quickest way to manage your... | Read more »
Kill Shot Bravo guide - How to become an...
Kill Shot Bravo is a disturbing amount of fun. No matter how many times I play a game that encourages me to snipe people in the head, I feel a little uneasy at how satisfying it is. Here are some useful tips to get you started on your path to... | Read more »
The best note-taking app on iPhone and i...
Word processors are handy and all, but sometimes you just want to make a quick note. Whether it's to jot down your shopping list, some quick song lyrics, or a phone number, the ease of use of a note-taking app easily surpasses that of a heftier... | Read more »

Price Scanner via

Al Jazeera Launches New iOS And Android Mobil...
Doha, Qatar based Al Jazeera has launched new mobile and tablet apps on the iOS and Android systems bringing the latest Al Jazeera news and programmes live together with on-demand personalisation.... Read more
B&H Photo Holiday Sale: Up to $250 off Ma...
B&H Photo has all new Macs on sale for up to $500 off MSRP as part of their Holiday sale including free shipping plus NY sales tax only: - 15″ 2.2GHz Retina MacBook Pro: $1799 $200 off - 15″ 2.... Read more
Free Aura ‘Ultimate’ Mac App For Gmail Update...
Miami, Florida based Crosscoded has announced Aura 1.2.0, an update to the Mac app for Gmail. Aura mixes the power of a native client with the flexibility of the Gmail web app with support for up to... Read more
Apple Will Edge Closer to Samsung in Smartpho...
Total smartphone shipments for 2015 are projected to decline by 9.7% to 1.286 billion units, according to the latest report from global market research firm TrendForce. Though Chinese vendors have... Read more
12-inch MacBooks in stock for up to $120 off,...
Adorama has 12″ Retina MacBooks in stock for up to $120 off MSRP including free shipping plus NY & NJ sales tax only. For a limited time, Adorama will include a free Apple USB-C to USB Adapter,... Read more
Save 15% with Apple refurbished Mac Pros
The Apple Store has Apple Certified Refurbished Mac Pros available 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
iPod touch (6th Gen) on sale for $40-$60 off...
Save $40 to $60 on a 6th generation iPod touch at Target with free shipping or free local store pickup (if available). Sale prices for online orders only, in-store prices may vary: - 16GB iPod touch... Read more
13-inch 1.6GHz MacBook Air on sale for $849,...
Best Buy has the 2015 13″ 1.6GHz/128GB MacBook Air on sale for $849.99 on their online store. Choose free shipping or free local store pickup (if available). Sale price for online orders only, in-... Read more
Apple refurbished 15-inch 2.2GHz Retina MacBo...
Apple has Certified Refurbished 2014 15″ 2.2GHz Retina MacBook Pros available for $1609, $390 off original MSRP. Apple’s one-year warranty is included, and shipping is free. Read more
Weekend sale: 13-inch Retina MacBook Pros for...
Save up to $100 on the purchase of a new 2015 13″ Retina MacBook Pro at the following resellers. Shipping is free with each model: 2.7GHz/128GB MSRP $1299 2.7GHz/256GB... Read more

Jobs Board

*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
Senior Business Development Manager, - *Appl...
# Senior Business Development Manager, - Apple Pay Job Number: 44473850 Santa Clara Valley, Califo ia, United States Posted: Nov. 20, 2015 Weekly Hours: **Job Summary** Read more
Content Producer, *Apple* University - Appl...
# Content Producer, Apple University Job Number: 44135153 Santa Clara Valley, Califo ia, United States Posted: Nov. 20, 2015 Weekly Hours: 40.00 **Job Summary** The Read more
*Apple* Media QA Manager - Apple (United Sta...
# Apple Media QA Manager Job Number: 44409763 Santa Clara Valley, Califo ia, United States Posted: Nov. 17, 2015 Weekly Hours: 40.00 **Job Summary** Apple Media Inte 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
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.