GTK+ UNIX To Win32 Porting Tutorial

By WolfPack Entertainment

2002 May 5

This is a tutorial on how to port a UNIX/GTK+ application to Win32, it is based on the information used by WolfPack Entertainment to port their own UNIX/GTK+ applications to Win32.

You will need the following in order to port your UNIX/GTK+ application to Win32 using this tutorial:

• The source for the application that you want to port
• VC++ installed and working properly on a Windows machine

Make sure that the GTK+ application that you are porting can be compiled successfully and that it runs properly on a UNIX machine with GTK+ 2.0.

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Contents

1. Installing GTK+ Win32 Devel on your Windows machine
2. Set up VC++ to compile with GTK+ Win32 Devel
3. GDKX and GDKWin32 Devel Set Up
4. Project Set Up & Compiling
5. Installing GTK+ Win32 DLLs on your Windows machine
6. Common Errors & Solutions

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Installing GTK+ Win32 Devel on your Windows machine

These files only need to be installed on the Windows machine that you are going to compile the applications on (not to run applications), your end users will not need to install these.

The files that you need to download are listed at:

• http://www.gimp.org/~tml/gimp/win32/

The exact GTK+ Win32 Devel and GTK+ Win32 DLL package files that you need to download are as follows:

• atk-1.0.0-20020314.zip
• atk-dev-1.0.0-20020314.zip
• dirent.zip
• glib-2.0.0-20020316.zip
• glib-dev-2.0.0-20020310.zip
• gtk+-2.0.0-20020310.zip
• gtk+-dev-2.0.0-20020314.zip
• libiconv-1.7.zip
• libiconv-dev-1.7.zip
• libintl-0.10.40-20020101.zip
• libjpeg-6b.zip
• libpng-1.2.0.zip
• libtiff-3.5.6-beta.zip
• pango-1.0-20020317.zip
• pango-dev-1.0-20020310.zip
• zlib-1.1.3.zip

Note that you are getting both Devel and DLLs packages in one step here, later you will sort out exactly what your end users will need.

Create a subdirectory in which you want to place your GTK+ Win32 Devel files in, on our Windows machine we used:

• D:\GTKWIN32\

And subsequently have the typical devel subdirectories in there, such as:

• D:\GTKWIN32\BIN\
• D:\GTKWIN32\DOC\
• D:\GTKWIN32\ETC\
• D:\GTKWIN32\INCLUDE\
• D:\GTKWIN32\LIB\
• D:\GTKWIN32\MAN\
• D:\GTKWIN32\SHARE\

For this tutorial we will reffer to the paths using the above situation.

Move all the package files that you have just downloaded in to:

• D:\GTKWIN32\

And then unzip all of them (preserving subdirectories).

Note: The file COPYING.LIB-2 is common in most packages, you will be prompted to overwrite it when you extract (respond yes to that). Also, there is a duplicate file named lib\pkgconfig\libpng.pc found in both packages libpng-1.2.0.zip and zlib-1.1.3.zip (we used the one from zlib-1.1.3.zip since it was slightly newer).

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Set up VC++ to compile with GTK+ Win32 Devel

You should now run VC++'s IDE and go to Tools->Options... Click on the Directories tab. There you need to define the directories for the GTK+ Win32 Devel files. Below are the directories that we defined:

• D:\GTKWIN32\BIN\ (For Executeable files)
• D:\GTKWIN32\INCLUDE\ (For Include files)
• D:\GTKWIN32\INCLUDE\GLIB-2.0\
• D:\GTKWIN32\LIB\GLIB-2.0\INCLUDE\
• D:\GTKWIN32\LIB\GTK+\INCLUDE\
• D:\GTKWIN32\LIB\ (For Library files)

One developer noted that we should place these directories before any MSSDK to avoid conflict (however we never experienced any problem and cannot confirm this).

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GDKX and GDKWin32 Devel Set Up

Most GTK+ applications need to access some X resources, since Win32 has no X for obvious reasons, there is something called GDKWin32. The short story is that if you #include then you need to change that to #include . You can make this a compile time condition, for example:

#ifdef WIN32
# include 
#else
# include 
#endif

Important note: The packages that you downloaded in the above appear to be missing a particular GDKWin32 header file. You need to obtain that file here:

• gdkprivate-win32.h

And install it in D:\GTKWIN32\INCLUDE\GDK\WIN32\GDKPRIVATE-WIN32.H

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Project Set Up & Compiling

Now you need to create a project (VC++'s equvilent to Makefiles) for your GTK+ application. Make sure that you have the complete UNIX version of your GTK+ application's source on your Windows machine. Create a new project in the source directory of your GTK+ application (File->New) and select New Win32 Application.

Now you have a Workspace/Project, next you need to add your source files to the project and also make sure that you add the following .lib files:

• glib-2.0.lib
• gdk.lib
• gtk.lib

Look for those in D:\GTKWIN32\LIB\

At this point you are ready to try and compile. There may be errors and there probably will be errors, if you do encounter errors please read the section Common Errors and Solutions

If you do manage to compile things successfully, do not run your program just yet. You will need to install the GTK+ Win32 DLLs next.

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Installing GTK+ Win32 DLLs on your Windows machine

The GTK+ Win32 DLL need to be installed in your C:\WINDOWS\SYSTEM\ directory, most GTK+ applications ported to Win32 seem to require the following DLLs in your C:\WINDOWS\SYSTEM\ directory:

• libglib-2.0-0.dll
• libgmodule-2.0-0.dll
• libintl-1.dll
• libgdk-0.dll
• iconv.dll
• libgtk-0.dll

You can find these files originally in the D:\GTKWIN32\LIB\ directory when you initially extracted, move them to C:\WINDOWS\SYSTEM\

Your GTK+ program may require more or less, however the easiest way to find out is to simply run your GTK+ application now (provided that was compiled without any errors or serious warnings).

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Common Errors & Solutions

Error: Warnings about libc conflict at linking stage.
Possible Solution: In Settings->Link->Input you should add to the Project Options /nodefaultlib:"libc" (or you can just add libc to the Ignore Libraries: line)

Error: Segfaults at runtime on free() calls.
Possible Solution: If this behavior was not observed on the UNIX version of your application then the most likely cause is that you allocated memory with g_malloc() or similar function and deallocated with free() instead of g_free(). You need to use g_free() and you cannot mix libc (de)allocators with glib (de)allocators.

Error: Console appears and I see a bunch of GDK gdl_draw*() errors printed.
Possible Solution: If this behavior was not observed on the UNIX version of your application then the most likely cause is that the gdk_draw_*() function received values that were out of bounds or 0 for a asserted non-zero input. The Win32 GDK appears to need more bounds checking before input to its gdk_draw_*() functions.

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Stardict 中文词库文件

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[名词委审定]汉英石油名词(1994) 7764

[名词委审定]英汉动物学名词(1996) 6591

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[名词委审定]汉英地理学名词(1988) 1428

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[名词委审定]英汉化学工程名词(1995) 2155

[名词委审定]英汉心理学名词(1999) 2973

[名词委审定]汉英电子学名词(1993) 5311

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[名词委审定]英汉农学名词(1993) 3060

[名词委审定]英汉大气科学名词（1996） 1763

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Windows XP TCP/IP Routing

All documentation on Windows 2000 shows that routing on multiple network adapters is
activated in "RRAS" : Routing and Remote Access Service.
But RRAS is not part of Windows 2000 Professional.

Searching the Microsoft Website , I found:

TCP/IP Troubleshooting Troubleshooting IP Routing

Enabling IP Routing

By default, IP routing is disabled. To enable IP routing, you must allow the computer to
forward IP packets it receives. This requires a change to the Windows 2000 system registry.
When you enable the Routing and Remote Access service for IP routing,
this registry entry is made automatically.

To enable IP routing

1 .From the Start menu, click Run.

2.Type regedt32.exe or regedit.exe, and then click OK.

3.In a registry editor, navigate to
HKEY_LOCAL_MACHINE \SYSTEM\CurrentControlSet\Services\Tcpip \Parameters

4. Select the "IPEnableRouter" entry (by defining as value : 1 ) :

5. To enable IP routing for all network connections installed and used by this computer, assign a value of 1.
To do this in regedit.exe, right-click the entry, and then click Modify.
In regedt32.exe, click on the wanted entry, click on Edit, and then click on the appropriate menu choice.

6.Close the registry editor.

It is required to reboot Windows 2000 for this change to take effect.

I have used this in a configuration, where the Windows 2000 Professional system works
as a router between an Ethernet network and a USB-network.

---

I have found in Windows XP Professional Online Help or the Resource kit no information
on the use of Windows XP as a router, so I can only assume that Microsoft likes to reserve
this functionality for the (still to come) server-version of XP.
But since (except for the new fancy and colorful userinterface) Windows XP is very similar
to Windows 2000, I tried the same registry entry as for Windows 2000 :

HKEY_LOCAL_MACHINE \SYSTEM\CurrentControlSet\Services\Tcpip \Parameters
subkey : "IPEnableRouter" entry , was by default set to "0" "


After rebooting the system, my Windows XP system was working properly as a router between 2 different
subnets.

Google Maps for Mobile

REVIEW DATE: 03.15.07
BOTTOM LINE:
Like Opera Mini 3.0, Google Maps for Mobile is another no-brainer download; try it and risk becoming addicted.

PROS:
Detailed road and satellite maps. Lets you get directions right on your phone. Real-time traffic reports for 30 cities. Easy local search. Supports GPS functionality on GPS-enabled handsets.

CONS:
Requires a Windows Mobile or Palm OS smartphone. Traffic info is exceedingly basic. Only shows one step at a time when giving directions. EV-DO connection recommended for best performance.

COMPANY:
Google Inc

SPEC DATA

Price: $0.00

Type: Business, Personal, Professional

EDITOR RATING:

By Jamie Lendino, Smart Device Central

Internet heavyweight Google has offered powerful mobile services for some time now. Even so, the new Google Maps for Mobile takes things a step further. If you have a Palm OS or Windows Mobile smartphone, Google Maps for Mobile gives you most of the functionality of the desktop version. Although it runs on your handset instead of a desktop Web browser, it's an exceedingly versatile and useful application.

At Google's site, you can download and install either version directly onto your handheld. On a basic level, Google Maps for Mobile lets you view detailed road and satellite maps. Once you input the desired location, you can zoom in by pressing your phone's center control pad button, or zoom out again by hitting the Zoom Out soft button (at least on a Windows Mobile handheld; see below). One nice touch is that you can jump several zoom levels in one shot simply by pressing either button multiple times in fast succession. This way, you don't have to wait for it to load new data each time.

In my tests, I found that the satellite maps downloaded pretty slowly, even over a fast EV-DO connection. For example, sometimes it took more than 15 to 20 seconds before I saw an image, though other times it was faster. Once the picture was visible, I could scroll around relatively quickly, including zooming in and out. Regular street maps, though, almost always loaded swiftly.

Fortunately, Google Maps for Mobile does much more than display maps. The "Find Nearby Business" feature takes a keyword you input (such as "pizza") and displays a series of red numbered icons that show all the nearest businesses that fit that description. You can zoom out to see them all at once, or zoom in on a particular one in order to see the cross streets. Press a number key to display a descriptive title over the corresponding icon (such as "Grimaldi's") and hit the number a second time to switch to a sparse info screen that shows the address and phone number when available.

Google Maps for Mobile also lets you input two locations in order to get directions between them. When you run a query, the program first shows a quick summary of the start and end points, the distance between them, and approximately how long it should take to drive the route. Press the OK button and the app returns to the roadmap screen, showing a cartoon balloon with the first step highlighted (say, "Head Southwest on 21st St. toward 27th Rd – go 0.3 mi"). The program then prompts you to press 3 to show each next step. Unfortunately, there's no way to produce an all-text list similar to what you'd see on MapQuest or on the left-hand side of a desktop Google Maps window. The only way to see all the steps is to scroll through them with multiple key presses.

Google's real-time traffic updates are another plus; they cover more than 30 major metropolitan areas. But the implementation is exceedingly basic. All this feature does is highlight roads with major congestion in red, routes with lighter congestion in yellow, and roads with no traffic in green. That's enough to get a quick idea, but there's no way, without leaving the app and finding a different Web site, to find out what's causing a traffic jam or whether it could let up soon. And many large sections of major roads in New York City came up as "grey" during my tests, meaning that no current data was available.

Unlike Microsoft Pocket Streets 2005, Google Maps for Mobile is constantly updated in real time over the Internet. You never have to install separate city data files or update them regularly. And Google Maps offers directions, a stunning omission in Pocket Streets 2005. My test phone didn't have GPS capability built in. But if your handset does, you can activate it in Google Maps for Mobile, and then have the application track your location using Google's powerful maps. (Pocket Streets 2005 can also take advantage of built-in GPS chips).

I mostly tested the Window Mobile version on a Motorola Q, though I also fired up the Palm OS version on a Palm Treo 700p. As always, the Palm OS's higher screen resolution (320-by-320 versus 320-by-240 on the Q) allows for more map detail, and the Treo's stylus and touch screen help with navigation, though not to the same extent as they do with, say, editing documents. The rest of the interface is slightly different, too. There are dedicated touch screen buttons for Zoom In and Zoom Out, with the rest of the features located in the two drop-down menus.

In short, Google Maps for Mobile renders Microsoft's Pocket Streets 2005 application completely unnecessary. Google Maps is free, fast, stable, and updated in real time, and it also offers driving directions. Microsoft Pocket Streets 2005 is by no means a bad product. But unlike Google Maps for Mobile, it's not free, is not particularly stable, does not receive continuous street map updates automatically, and doesn't offer directions. I am going to stick with Google Maps.

Download Google Maps for Mobile