本帖最后由 gzaod 于 2018-4-16 11:00 编辑
已解决。
参考 :https://stackoverflow.com/questi ... ol-and-its-children
class DrawingControl{ [DllImport("user32.dll" public static extern int SendMessage(IntPtr hWnd, Int32 wMsg, bool wParam, Int32 lParam); private const int WM_SETREDRAW = 11; public static void SuspendDrawing( Control parent ) { SendMessage(parent.Handle, WM_SETREDRAW, false, 0); } public static void ResumeDrawing( Control parent ) { SendMessage(parent.Handle, WM_SETREDRAW, true, 0); parent.Refresh(); }} |