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* eframe: Repaint immediately on RepaintAsap, fixes #903 This completely eliminates the white flickering seen on Windows when rapidly resizing a window on the glow backend. The reason that happens is because DWM only waits for the resize event to be delivered before displaying the window at its new size. You must repaint synchronously inside that iteration of the event loop or else you get flickering. * Differentiate between RepaintAsap and RepaintNext RepaintNext looks like it is indeed needed in at least one case instead of RepaintAsap. * Use RepaintNext in more situations Starting to understand why this was the behavior. It looks like only a few special cases should be given RepaintAsap, such as the window being resized. All other cases should be RepaintNext, as it can wait. Using RepaintAsap in all situations will cause things like lag when changing a slider by keyboard with a high key repeat rate. * Add explanatory comments I am a total hypocrite for forgetting to add these. * Rename RepaintAsap to RepaintNow There is no notion of "possibility" here like there is when waiting for RedrawEventsCleared. RepaintNow causes an immediate repaint no matter what. * Fix RepaintNow comment "Delays" is ambiguous.