Flash MX 2004 Games : Art to ActionScript

Chapter 20: Using Flash on a PocketPC
Scroll bars
Pocket Internet Explorer has two view settings. You can choose ‘Fit to Screen’ in which case
a document is resized to fit into the 240 width of the PPC. If ‘Fit to Screen’ is disabled then a
document will have a default virtual size of 640 × 480 pixels. Consequently the bottom scroll bar
will always be on, which occupies 11 pixels above the Command bar. If this is the case and your
user also has the Address bar active then the available screen height goes down from 320 to 234
pixels. This makes the ideal size for a Flash movie that is viewed in PIE to be 240 × 234 pixels.
This will be visible on all user setups.
Server side detection
More and more PPCs are capable of a direct connection to the web. So what do you do when you
have multiple versions of your game available, one for the PPC and one for desktop machines?
The best option is to use a server side detection script. When Pocket Internet Explorer sends a
request to your HTTP server, the following specific information is included in the HTTP request
header:
1 UA-pixels: {i.e. 240x320}
2 UA-color: {mono2 | mono4 | color8 | color16 | color24 | color32}
3 UA-OS: {Windows CE (POCKET PC) - Version x.x}
4 UA-CPU = {}
Listing 20.2
Using the following server side JScript (ASP) lines you can create specially optimized pages as soon
as a Pocket Internet Explorer attempts to access games from your site.
1 // Check for Windows CE (Pocket PC, Palm-size PC,
2 // Handheld PC, Handheld PC Pro)
3 var strNav = navigator.userAgent;
4 var isCE = strNav.indexOf("Windows CE");
5 if(isCE > -1) {
6 //add Windows CE specific code
7 }else {
8 //add code for other platforms
9 }
Listing 20.3
1 ’Check for Pocket PC
2 var isPPC = strNav.indexOf("240x320");
3 if(isPPC > -1) {
4 // add Pocket PC specific code
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