C# Control.PerformLayout方法代码示例

        // INTERFACE FUNCTIONS
        public void AddToContainer(Control container)
        {
            container.SuspendLayout();

            AddControlsToContainer(container);

            container.ResumeLayout(false);
            container.PerformLayout();
        }

        public SingleLineFlowLayoutManager(Control container, int margin)
        {
            this.container = container;
            this.margin = margin;

            // Attach the event handler.
            container.Layout += new LayoutEventHandler(UpdateLayout);

            // Refresh the layout.
            container.PerformLayout(container, "LayoutManager");
        }

		public static void CallControlPerformLayout(Control c, object[] obj)
		{
			c.PerformLayout((Control)obj[0], (string)obj[1]);
		}

        public LayoutTransaction(Control controlToLayout, IArrangedElement controlCausingLayout, string property, bool resumeLayout) {
            CommonProperties.xClearPreferredSizeCache(controlCausingLayout);
            _controlToLayout = controlToLayout;
            
            _resumeLayout = resumeLayout;
            if(_controlToLayout != null) {
#if DEBUG
                _layoutSuspendCount = _controlToLayout.LayoutSuspendCount;
#endif
                _controlToLayout.SuspendLayout();
                CommonProperties.xClearPreferredSizeCache(_controlToLayout);

                // Same effect as calling performLayout on Dispose but then we would have to keep
                // controlCausingLayout and property around as state.
                if (resumeLayout) {
                    _controlToLayout.PerformLayout(new LayoutEventArgs(controlCausingLayout, property));    
                }
            }
        }

		public void TestPublicMethods ()
		{
			// Public Methods that force Handle creation:
			// - CreateControl ()
			// - CreateGraphics ()
			// - GetChildAtPoint ()
			// - Invoke, BeginInvoke throws InvalidOperationException if Handle has not been created
			// - PointToClient ()
			// - PointToScreen ()
			// - RectangleToClient ()
			// - RectangleToScreen ()
			Control c = new Control ();
			
			c.BringToFront ();
			Assert.IsFalse (c.IsHandleCreated, "A1");
			c.Contains (new Control ());
			Assert.IsFalse (c.IsHandleCreated, "A2");
			c.CreateControl ();
			Assert.IsTrue (c.IsHandleCreated, "A3");
			c = new Control ();
			Graphics g = c.CreateGraphics ();
			g.Dispose ();
			Assert.IsTrue (c.IsHandleCreated, "A4");
			c = new Control ();
			c.Dispose ();
			Assert.IsFalse (c.IsHandleCreated, "A5");
			c = new Control ();
			//DragDropEffects d = c.DoDragDrop ("yo", DragDropEffects.None);
			//Assert.IsFalse (c.IsHandleCreated, "A6");
			//Assert.AreEqual (DragDropEffects.None, d, "A6b");
			//Bitmap b = new Bitmap (100, 100);
			//c.DrawToBitmap (b, new Rectangle (0, 0, 100, 100));
			//Assert.IsFalse (c.IsHandleCreated, "A7");
			//b.Dispose ();
			c.FindForm ();
			Assert.IsFalse (c.IsHandleCreated, "A8");
			c.Focus ();
			Assert.IsFalse (c.IsHandleCreated, "A9");

			c.GetChildAtPoint (new Point (10, 10));
			Assert.IsTrue (c.IsHandleCreated, "A10");
			c.GetContainerControl ();
			c = new Control ();
			Assert.IsFalse (c.IsHandleCreated, "A11");
			c.GetNextControl (new Control (), true);
			Assert.IsFalse (c.IsHandleCreated, "A12");
#if NET_2_0
			c.GetPreferredSize (Size.Empty);
			Assert.IsFalse (c.IsHandleCreated, "A13");
#endif
			c.Hide ();
			Assert.IsFalse (c.IsHandleCreated, "A14");
			c.Invalidate ();
			Assert.IsFalse (c.IsHandleCreated, "A15");
			//c.Invoke (new InvokeDelegate (InvokeMethod));
			//Assert.IsFalse (c.IsHandleCreated, "A16");
			c.PerformLayout ();
			Assert.IsFalse (c.IsHandleCreated, "A17");
			c.PointToClient (new Point (100, 100));
			Assert.IsTrue (c.IsHandleCreated, "A18");
			c = new Control ();
			c.PointToScreen (new Point (100, 100));
			Assert.IsTrue (c.IsHandleCreated, "A19");
			c = new Control ();
			//c.PreProcessControlMessage   ???
			//c.PreProcessMessage          ???
			c.RectangleToClient (new Rectangle (0, 0, 100, 100));
			Assert.IsTrue (c.IsHandleCreated, "A20");
			c = new Control ();
			c.RectangleToScreen (new Rectangle (0, 0, 100, 100));
			Assert.IsTrue (c.IsHandleCreated, "A21");
			c = new Control ();
			c.Refresh ();
			Assert.IsFalse (c.IsHandleCreated, "A22");
			c.ResetBackColor ();
			Assert.IsFalse (c.IsHandleCreated, "A23");
			c.ResetBindings ();
			Assert.IsFalse (c.IsHandleCreated, "A24");
			c.ResetCursor ();
			Assert.IsFalse (c.IsHandleCreated, "A25");
			c.ResetFont ();
			Assert.IsFalse (c.IsHandleCreated, "A26");
			c.ResetForeColor ();
			Assert.IsFalse (c.IsHandleCreated, "A27");
			c.ResetImeMode ();
			Assert.IsFalse (c.IsHandleCreated, "A28");
			c.ResetRightToLeft ();
			Assert.IsFalse (c.IsHandleCreated, "A29");
			c.ResetText ();
			Assert.IsFalse (c.IsHandleCreated, "A30");
			c.SuspendLayout ();
			Assert.IsFalse (c.IsHandleCreated, "A31");
			c.ResumeLayout ();
			Assert.IsFalse (c.IsHandleCreated, "A32");
#if NET_2_0
			c.Scale (new SizeF (1.5f, 1.5f));
			Assert.IsFalse (c.IsHandleCreated, "A33");
#endif
			c.Select ();
			Assert.IsFalse (c.IsHandleCreated, "A34");
//.........这里部分代码省略.........

		public static HotKeyControlEx ReplaceTextBox(Control cContainer, TextBox tb,
			bool bNoRightModKeys)
		{
			Debug.Assert(tb != null); if(tb == null) throw new ArgumentNullException("tb");
			tb.Enabled = false;
			tb.Visible = false;
			cContainer.Controls.Remove(tb);

			HotKeyControlEx hk = new HotKeyControlEx();
			hk.Location = tb.Location;
			hk.Size = tb.Size;
			hk.NoRightModKeys = bNoRightModKeys;

			cContainer.Controls.Add(hk);
			cContainer.PerformLayout();

			return hk;
		}

 private void SetFlowSize(Control c, FlowLayoutPanel flow)
 {
     c.Width = flow.Width - 1 - c.Margin.Left - c.Margin.Right - (flow.VerticalScroll.Visible ? SystemInformation.VerticalScrollBarWidth : 0);
     c.PerformLayout();
 }

        private void SelectViewer(Control viewer)
        {
            if (viewer == _currentViewer)
                return;

            if (_currentViewer != null)
                _currentViewer.SuspendLayout();

            viewer.ResumeLayout();
            viewer.PerformLayout();
            viewer.BringToFront();

            _currentViewer = viewer;
        }

        /// <summary>
        /// Tries to switch to the specified language, returning false on failure.
        /// </summary>
        /// <param name="control">The control to localize.</param>
        /// <param name="cultureCode">The culture code to set - for example, en-US or de-DE.</param>
        /// <returns>Whether the localization was actually switched.</returns>
        /// <exception cref="ArgumentNullException"><paramref name="control"/> is <c>null</c>.</exception>
        public static bool SwitchLocalization(Control control, string cultureCode)
        {
            if (control == null)
            {
                throw new ArgumentNullException("control");
            }

            ComponentResourceManager resources = new ComponentResourceManager(control.GetType());
            if (LocalizationHelper.SetCulture(resources, cultureCode))
            {
                LocalizationHelper.ApplyResources(resources, control);
                control.PerformLayout();

                return true;
            }

            return false;
        }