Best programming language/environment to create a visual editor
What's the best programming language/IDE to use to create a visual editor with drag/drop, resizing, property setting, etc.
My options right now are looking like:

- REALBasic
- LiveCode
- Adobe AIR
- Titanium Appcelerator

Anyone have experience or recommendations? Right now I'm leaning away from REALBasic, and more towards the others, but really don't care. Thanks in advance!
Best programming language/environment to create a visual editor
===

What's the best programming language/IDE to use to create a visual editor with drag/drop, resizing, property setting, etc.
My options right now are looking like:

- REALBasic
- LiveCode
- Adobe AIR
- Titanium Appcelerator

Anyone have experience or recommendations? Right now I'm leaning away from REALBasic, and more towards the others, but really don't care. Thanks in advance!