We fixed this by installing Citrix hot fixes for Dual Monitors. Please check citrix website for hot fixes.

We are using SkinFramework ActiveX Control with our vb6 application. This works great with users who has single monitor. But user who has dual monitor, application behaves totally wired, none of the labels are visible, app crashes in lots of places. If user turns off the dual monitor setting, everything works fine. By the way, user is accessing the application via Citrix and application as publish application(seamless ). Actually, problem is with the combination of Citrix publish application and dual monitor. If one of them does not exists, then app works, i.e, lets say, user has dual monitor and user uses application directly from local machine, or using citrix with any resolution(Not seamless or publish application, meaning citrix parent window exists), application works fine. If user has dual monitor and uses citrix seamless mode, then application has all the problems. Now, if user uses dual monitor and citrix seamless mode with less color (256 or less color), then skin not applied(it's all 3D buttons like classic windows theme) but application works fine(all the labels are visible, and also app does not crash). Now, if user uses single monitor, citrix seamless mode with true color, everything works.