kotlin-electron/electron.core/BrowserWindow/setThumbnailClip

setThumbnailClip

fun setThumbnailClip(region: Rectangle)(source)

Sets the region of the window to show as the thumbnail image displayed when hovering over the window in the taskbar. You can reset the thumbnail to be the entire window by specifying an empty region: { x: 0, y: 0, width: 0, height: 0 }.