Show Redraw Regions

[IvanBespalov]

1) Only those developers, who use Adobe Debugger Plug-ins will understand what the issue.

2) Step by step:

• open ESRI Flex Viewer in browser where Adobe Debugger Plug-in installed;


• in flex context menu (mouse right button click on flash content) choose "Show Redraw Regions"

3) As a result in the upper left corner there is a pulsating region, this means that the part is constantly redrawn.

4) I have no problems with it.

5) I just interested what part of code permanently redrawing of content and why it is needed.

6) I tried to analyze the "ESRI Flex Viewer" code. But I did not find anything. I suppose that this is due to the drawing effects in some skin class.

7) We developed web mapping application based on ArcGIS Flex API and do not have this issue. Each application based on ArcGIS Flex Viewer has it.

QUESTIONS:
What part of code permanently redrawing of content and why it is needed?
How does this affect application performance?

Thx.