Hi I was just passing by DynaCASE once again. It uses RTGridView and I noticed that when I zoom out camera or resize (enlarge) window too much, grid remains too small in the center of the canvas with empty space around it. Therefore I used few more events and callbacks which reset grid path in those cases. mcz file: https://monosnap.com/file/044YyhaPtxCcwsModv7Cb5IotPpXPN By the way why does RTCanvas use TRResizeCanvasEvent and not TRExtentCallback which would seem to me more uniform with rest of Trachel? Jan Blizničenko -- View this message in context: http://forum.world.st/Roassal2-RTGridView-not-updating-on-zoom-tp4876032.ht… Sent from the Moose mailing list archive at Nabble.com.