Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WinForms / System / WinForms / Design / InheritanceUI.cs / 1 / InheritanceUI.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.Windows.Forms.Design { using System; using System.ComponentModel; using System.ComponentModel.Design; using System.Design; using System.Drawing; using System.Diagnostics; using System.Windows.Forms; ////// This class handles the user interface for inherited components. /// internal class InheritanceUI { private static Bitmap inheritanceGlyph; private static Rectangle inheritanceGlyphRect; private ToolTip tooltip; ////// The bitmap we use to show inheritance. /// public Bitmap InheritanceGlyph { get { if (inheritanceGlyph == null) { inheritanceGlyph = new Bitmap(typeof(InheritanceUI), "InheritedGlyph.bmp"); inheritanceGlyph.MakeTransparent(); } return inheritanceGlyph; } } ////// The rectangle surrounding the glyph. /// public Rectangle InheritanceGlyphRectangle { get { if (inheritanceGlyphRect == Rectangle.Empty) { Size size = InheritanceGlyph.Size; inheritanceGlyphRect = new Rectangle(0, 0, size.Width, size.Height); } return inheritanceGlyphRect; } } ////// Adds an inherited control to our list. This creates a tool tip for that /// control. /// public void AddInheritedControl(Control c, InheritanceLevel level) { if (tooltip == null) { tooltip = new ToolTip(); tooltip.ShowAlways = true; } Debug.Assert(level != InheritanceLevel.NotInherited, "This should only be called for inherited components."); string text; if (level == InheritanceLevel.InheritedReadOnly) { text = SR.GetString(SR.DesignerInheritedReadOnly); } else { text = SR.GetString(SR.DesignerInherited); } tooltip.SetToolTip(c, text); // Also, set all of its non-sited children foreach(Control child in c.Controls) { if (child.Site == null) { tooltip.SetToolTip(child, text); } } } public void Dispose() { if (tooltip != null) { tooltip.Dispose(); } } ////// Removes a previously added inherited control. /// public void RemoveInheritedControl(Control c) { if (tooltip != null && tooltip.GetToolTip(c).Length > 0) { tooltip.SetToolTip(c, null); // Also, set all of its non-sited children foreach(Control child in c.Controls) { if (child.Site == null) { tooltip.SetToolTip(child, null); } } } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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