This chapter includes:
The Photon Widget Reference describes the global data structures and the widgets defined in the Photon toolkit, along with their resources and any associated convenience functions. It's intended for developers of Photon applications.
|If you're familiar with earlier versions of Photon, you should read the What's New appendix to find out how the widgets have changed in this release.|
|For information about:||See:|
|Data structures||Global Data Structures|
|What is new or changed in this release||What's New|
|Explanations of Photon terms||Glossary|
Since widgets inherit a lot of behavior from their parent classes, you should make yourself familiar with the fundamental classes, especially PtWidget, PtBasic, and PtContainer.
Throughout this manual, we use certain typographical conventions to distinguish technical terms. In general, the conventions we use conform to those found in IEEE POSIX publications. The following table summarizes our conventions:
|Code examples||if( stream == NULL )|
|File and pathnames||/dev/null|
|Keyboard input||something you type|
|Programming data types||unsigned short|
|Programming literals||0xFF, "message string"|
We use an arrow (→) in directions for accessing menu items, like this:
You'll find the Other... menu item under.
We use notes, cautions, and warnings to highlight important messages:
|Notes point out something important or useful.|
|Cautions tell you about commands or procedures that may have unwanted or undesirable side effects.|
|Warnings tell you about commands or procedures that could be dangerous to your files, your hardware, or even yourself.|
In our documentation, we use a forward slash (/) as a delimiter in all pathnames, including those pointing to Windows files.
We also generally follow POSIX/UNIX filesystem conventions.
To obtain technical support for any QNX product, visit the Support area on our website (www.qnx.com). You'll find a wide range of support options, including community forums.
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