Separate threads either need to use separate display connections or you need to enable thread mutexes for a shared connection (XInitThreads will enable Xlib's internal mutexes). Note still, that pausing a thread while it's in Xlib can block any other threads also trying to use Xlib with the same display connection. You'd want to use separate display connections for that. Mark. On Tue, 31 Jan 2006 niranjan@xxxxxxxxxxxxxxxxx wrote: > Hi to all > > > Iam building an kde Application When I pause the current pthread and > invoke an dialog in another thread the following error is coming . > > Xlib : unexpected async reply > Xlib : sequence lost (0x1718e > 0x71a0) in reply to 0x0! > X Error : BadImplementation (server does not implement opertaion) 17 > Major opcode : 20 > MInor opcode : 0 > Resource id : 0x759d1 > The error is coming randomly , not always . > Can any will help how to come out of this error . > > > Thanks > _______________________________________________ > > Devel@xxxxxxxxxxx > http://XFree86.Org/mailman/listinfo/devel > _______________________________________________ Devel@xxxxxxxxxxx http://XFree86.Org/mailman/listinfo/devel