Name: qtVersion

Type: function

Syntax: the qtVersion

Syntax: qtVersion()

Summary:

<return|Returns> the version of <QuickTime> installed on the system.

Introduced: 1.0

OS: mac

Platforms: desktop

Example:

the qtVersion

Example:

if the qtVersion &lt; 3 then answer "You need QuickTime 3.0 or later."

Returns:

The <qtVersion> function returns a positive number.

Description:

Use the <qtVersion> function to make sure the version of QuickTime

that's installed is recent enough to handle any version-dependent

features in movies you want to play.

On Unix systems, the <qtVersion> function always <return|returns> 2.0.

On Mac OS and Windows systems, if <QuickTime> is not installed, the

<qtVersion> function <return|returns> 0.0. Otherwise, it returns the

<QuickTime> version number.

>*Tip:* It can take LiveCode a second or two to load the code needed to

> use <QuickTime>, depending on the machine speed. Since this code is

> only <loaded into memory> once per session, you can speed up the first

> occurrence of a QuickTime-related action by calling the <qtVersion>

> function during otherwise dead time--for example, during startup of

> your application--to preload the code.

Changes:

The use of <QuickTime> was deprecated in version 8.1 of LiveCode with

new defaults for <dontUseQT> and <dontUseQTEffects> as true on all

systems apart from pre OS X 10.8. The Windows build of LiveCode no

longer supports any <QuickTime> features and setting the <dontUseQT> and

<dontUseQTEffects> will have no effect. Additionally <QuickTime> does

not include 64 bit support and therefore can not be supported on OS X 64

bit builds of LiveCode.

References: play (command), qtVersion (function), buildNumber (function),

recordFormats (function), systemVersion (function), qtEffects (function),

QuickTime (glossary), return (glossary), loaded into memory (glossary),

videoClipPlayer (property), qtIdleRate (property), dontUseQT (property),

dontUseQTEffects (property)

Tags: multimedia