Listbox scrolling problem

I am using visual studio 2010.
I develop MFC dialog based application ,
in that i used listbox control.

listbox contain items more than 70000,
when i run this application i am not able to scroll all the items smoothly.

scrolling problem only occur if i run this application in windows7 ,
it run successfully in XP.

if i set the properties as :

Project properties > configuration properties > Linker > Manifest File > Generate Manifest
option to No(\Manifest)

than scrolling problem is solved.

if that option is set to Yes(\Manifest) than scrolling problem is occur in listbox.

Please help me to solve this problem.

Thanx and Regards,
Nilesh

Hi,

It is because the manifest need to be updated each time when you have it enabled. Since your data set is very large, duo to the simultaneous updates and scrolling together it is getting rough.

It works well in XP because there is live update of manifest in XP whereas Win7 has one. Though advantageous most of the times, it can cause problems like these sometimes.