description:
"pixels" changes to "points" automatically if input invalid value for chart.

build number:
2.6.0.v20100518-1142

steps to reproduce:
1. new a chart, in property editor->general, input 212 pixels for width
2. change width to "-10", and press enter, check the width of the chart.

expected result:
width is still "212 pixels".

actual result:
width is "212 points" (see the screenshot).

error log:
n/a
this is expected behavior. this is an enhancement rather than a regression
if invalid value is inputted, default value will be used instead. in this case, 212 points will be used.
verified, closed.