Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / WinForms / Managed / System / WinForms / ToolStripScrollButton.cs / 1305376 / ToolStripScrollButton.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms { using System; using System.ComponentModel; using System.Drawing; using System.Drawing.Design; using System.Diagnostics; using System.Windows.Forms.ButtonInternal; using System.Security.Permissions; using System.Security; ////// /// A non selectable winbar item /// internal class ToolStripScrollButton : ToolStripControlHost { private bool up = true; [ThreadStatic] private static Bitmap upScrollImage; [ThreadStatic] private static Bitmap downScrollImage; const int AUTOSCROLL_UPDATE = 50; private static readonly int AUTOSCROLL_PAUSE = SystemInformation.DoubleClickTime; private Timer mouseDownTimer; public ToolStripScrollButton(bool up) : base(CreateControlInstance(up)) { this.up = up; } private static Control CreateControlInstance(bool up) { StickyLabel label = new StickyLabel(); label.ImageAlign = ContentAlignment.MiddleCenter; label.Image = (up) ? UpImage : DownImage; return label; } ////// Deriving classes can override this to configure a default size for their control. /// This is more efficient than setting the size in the control's constructor. /// protected internal override Padding DefaultMargin { get { return Padding.Empty; } } protected override Padding DefaultPadding { get { return Padding.Empty; } } private static Image DownImage { get { if (downScrollImage == null) { downScrollImage = new Bitmap(typeof(ToolStripScrollButton), "ScrollButtonDown.bmp"); downScrollImage.MakeTransparent(Color.White); } return downScrollImage; } } internal StickyLabel Label { get{ return Control as StickyLabel; } } private static Image UpImage { get { if (upScrollImage == null) { upScrollImage = new Bitmap(typeof(ToolStripScrollButton), "ScrollButtonUp.bmp"); upScrollImage.MakeTransparent(Color.White); } return upScrollImage; } } private Timer MouseDownTimer { get{ if (mouseDownTimer == null) { mouseDownTimer = new Timer(); } return mouseDownTimer; } } protected override void Dispose(bool disposing) { if (disposing) { if (mouseDownTimer != null) { mouseDownTimer.Enabled = false; mouseDownTimer.Dispose(); mouseDownTimer = null; } } base.Dispose(disposing); } protected override void OnMouseDown (MouseEventArgs e) { UnsubscribeAll(); base.OnMouseDown(e); Scroll(); MouseDownTimer.Interval = AUTOSCROLL_PAUSE; MouseDownTimer.Tick += new EventHandler(OnInitialAutoScrollMouseDown); MouseDownTimer.Enabled = true; } protected override void OnMouseUp (MouseEventArgs e) { UnsubscribeAll(); base.OnMouseUp(e); } protected override void OnMouseLeave (EventArgs e) { UnsubscribeAll(); } private void UnsubscribeAll() { MouseDownTimer.Enabled = false; MouseDownTimer.Tick -= new EventHandler(OnInitialAutoScrollMouseDown); MouseDownTimer.Tick -= new EventHandler(OnAutoScrollAccellerate); } private void OnAutoScrollAccellerate(object sender, EventArgs e) { Scroll(); } private void OnInitialAutoScrollMouseDown(object sender, EventArgs e) { MouseDownTimer.Tick -= new EventHandler(OnInitialAutoScrollMouseDown); Scroll(); MouseDownTimer.Interval = AUTOSCROLL_UPDATE; MouseDownTimer.Tick += new EventHandler(OnAutoScrollAccellerate); } public override Size GetPreferredSize(Size constrainingSize) { Size preferredSize = Size.Empty; preferredSize.Height = (Label.Image != null) ? Label.Image.Height + 4 : 0; preferredSize.Width = (ParentInternal != null) ? ParentInternal.Width - 2 : preferredSize.Width; // Two for border return preferredSize; } private void Scroll() { ToolStripDropDownMenu parent = this.ParentInternal as ToolStripDropDownMenu; if (parent != null && Label.Enabled) { parent.ScrollInternal(up); } } internal class StickyLabel : Label { public StickyLabel() { } private bool freezeLocationChange = false; public bool FreezeLocationChange { get { return freezeLocationChange; } } protected override void SetBoundsCore(int x,int y,int width, int height, BoundsSpecified specified) { if (((specified & BoundsSpecified.Location) != 0) && FreezeLocationChange) { return; } base.SetBoundsCore(x, y, width, height, specified); } [SecurityPermission(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.UnmanagedCode)] protected override void WndProc(ref Message m) { if (m.Msg >= NativeMethods.WM_KEYFIRST && m.Msg <= NativeMethods.WM_KEYLAST) { // SECREVIEW: // NOTE this is the same as ToolStripDropDown, except we NEVER want to raise the key events. DefWndProc(ref m); return; } base.WndProc(ref m); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms { using System; using System.ComponentModel; using System.Drawing; using System.Drawing.Design; using System.Diagnostics; using System.Windows.Forms.ButtonInternal; using System.Security.Permissions; using System.Security; ////// /// A non selectable winbar item /// internal class ToolStripScrollButton : ToolStripControlHost { private bool up = true; [ThreadStatic] private static Bitmap upScrollImage; [ThreadStatic] private static Bitmap downScrollImage; const int AUTOSCROLL_UPDATE = 50; private static readonly int AUTOSCROLL_PAUSE = SystemInformation.DoubleClickTime; private Timer mouseDownTimer; public ToolStripScrollButton(bool up) : base(CreateControlInstance(up)) { this.up = up; } private static Control CreateControlInstance(bool up) { StickyLabel label = new StickyLabel(); label.ImageAlign = ContentAlignment.MiddleCenter; label.Image = (up) ? UpImage : DownImage; return label; } ////// Deriving classes can override this to configure a default size for their control. /// This is more efficient than setting the size in the control's constructor. /// protected internal override Padding DefaultMargin { get { return Padding.Empty; } } protected override Padding DefaultPadding { get { return Padding.Empty; } } private static Image DownImage { get { if (downScrollImage == null) { downScrollImage = new Bitmap(typeof(ToolStripScrollButton), "ScrollButtonDown.bmp"); downScrollImage.MakeTransparent(Color.White); } return downScrollImage; } } internal StickyLabel Label { get{ return Control as StickyLabel; } } private static Image UpImage { get { if (upScrollImage == null) { upScrollImage = new Bitmap(typeof(ToolStripScrollButton), "ScrollButtonUp.bmp"); upScrollImage.MakeTransparent(Color.White); } return upScrollImage; } } private Timer MouseDownTimer { get{ if (mouseDownTimer == null) { mouseDownTimer = new Timer(); } return mouseDownTimer; } } protected override void Dispose(bool disposing) { if (disposing) { if (mouseDownTimer != null) { mouseDownTimer.Enabled = false; mouseDownTimer.Dispose(); mouseDownTimer = null; } } base.Dispose(disposing); } protected override void OnMouseDown (MouseEventArgs e) { UnsubscribeAll(); base.OnMouseDown(e); Scroll(); MouseDownTimer.Interval = AUTOSCROLL_PAUSE; MouseDownTimer.Tick += new EventHandler(OnInitialAutoScrollMouseDown); MouseDownTimer.Enabled = true; } protected override void OnMouseUp (MouseEventArgs e) { UnsubscribeAll(); base.OnMouseUp(e); } protected override void OnMouseLeave (EventArgs e) { UnsubscribeAll(); } private void UnsubscribeAll() { MouseDownTimer.Enabled = false; MouseDownTimer.Tick -= new EventHandler(OnInitialAutoScrollMouseDown); MouseDownTimer.Tick -= new EventHandler(OnAutoScrollAccellerate); } private void OnAutoScrollAccellerate(object sender, EventArgs e) { Scroll(); } private void OnInitialAutoScrollMouseDown(object sender, EventArgs e) { MouseDownTimer.Tick -= new EventHandler(OnInitialAutoScrollMouseDown); Scroll(); MouseDownTimer.Interval = AUTOSCROLL_UPDATE; MouseDownTimer.Tick += new EventHandler(OnAutoScrollAccellerate); } public override Size GetPreferredSize(Size constrainingSize) { Size preferredSize = Size.Empty; preferredSize.Height = (Label.Image != null) ? Label.Image.Height + 4 : 0; preferredSize.Width = (ParentInternal != null) ? ParentInternal.Width - 2 : preferredSize.Width; // Two for border return preferredSize; } private void Scroll() { ToolStripDropDownMenu parent = this.ParentInternal as ToolStripDropDownMenu; if (parent != null && Label.Enabled) { parent.ScrollInternal(up); } } internal class StickyLabel : Label { public StickyLabel() { } private bool freezeLocationChange = false; public bool FreezeLocationChange { get { return freezeLocationChange; } } protected override void SetBoundsCore(int x,int y,int width, int height, BoundsSpecified specified) { if (((specified & BoundsSpecified.Location) != 0) && FreezeLocationChange) { return; } base.SetBoundsCore(x, y, width, height, specified); } [SecurityPermission(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.UnmanagedCode)] protected override void WndProc(ref Message m) { if (m.Msg >= NativeMethods.WM_KEYFIRST && m.Msg <= NativeMethods.WM_KEYLAST) { // SECREVIEW: // NOTE this is the same as ToolStripDropDown, except we NEVER want to raise the key events. DefWndProc(ref m); return; } base.WndProc(ref m); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- followingsibling.cs
- InputElement.cs
- ToolStripManager.cs
- InputElement.cs
- ApplicationInfo.cs
- TreeBuilderBamlTranslator.cs
- CodeFieldReferenceExpression.cs
- GreaterThanOrEqual.cs
- ListViewItemSelectionChangedEvent.cs
- CqlParserHelpers.cs
- MatrixAnimationBase.cs
- Substitution.cs
- EditingCommands.cs
- TextProperties.cs
- SchemaTableColumn.cs
- TypeDescriptionProvider.cs
- EdmToObjectNamespaceMap.cs
- BaseCodePageEncoding.cs
- SizeConverter.cs
- Parallel.cs
- TriState.cs
- IssuedTokenClientElement.cs
- ConstraintEnumerator.cs
- TimeoutValidationAttribute.cs
- EventRouteFactory.cs
- SqlDataReader.cs
- StrokeDescriptor.cs
- SessionStateUtil.cs
- RolePrincipal.cs
- XPathQueryGenerator.cs
- TextRunTypographyProperties.cs
- Mutex.cs
- FormViewModeEventArgs.cs
- RadioButtonFlatAdapter.cs
- BufferedStream.cs
- AppDomain.cs
- GridViewRowCollection.cs
- SHA384.cs
- ExecutionContext.cs
- ContainerControlDesigner.cs
- CultureNotFoundException.cs
- RegexGroupCollection.cs
- RichTextBoxConstants.cs
- SymLanguageType.cs
- TableAutomationPeer.cs
- SqlFileStream.cs
- CheckPair.cs
- PrePrepareMethodAttribute.cs
- WebPartActionVerb.cs
- GradientBrush.cs
- JavaScriptObjectDeserializer.cs
- WaitHandleCannotBeOpenedException.cs
- SignatureDescription.cs
- XsdDateTime.cs
- FileLoadException.cs
- WsdlHelpGeneratorElement.cs
- Types.cs
- EventToken.cs
- FixedPosition.cs
- ThreadExceptionEvent.cs
- WindowsContainer.cs
- DebugInfo.cs
- Dispatcher.cs
- GridViewEditEventArgs.cs
- WebPartConnectionsConnectVerb.cs
- MultiByteCodec.cs
- _SslSessionsCache.cs
- StrongTypingException.cs
- DrawingGroupDrawingContext.cs
- PropertyItem.cs
- sqlser.cs
- HatchBrush.cs
- SiteMapNodeCollection.cs
- DesignerProperties.cs
- AuthenticateEventArgs.cs
- HtmlHead.cs
- PickDesigner.xaml.cs
- PolicyConversionContext.cs
- SettingsPropertyCollection.cs
- PropertyInformationCollection.cs
- SmtpReplyReader.cs
- Cursor.cs
- PageParserFilter.cs
- InOutArgument.cs
- WebPartTransformerCollection.cs
- MultiViewDesigner.cs
- TraceData.cs
- GridViewColumnCollection.cs
- PassportPrincipal.cs
- StdValidatorsAndConverters.cs
- XsdDataContractExporter.cs
- RtType.cs
- MD5.cs
- ImageBrush.cs
- ObjectConverter.cs
- HMACMD5.cs
- HttpRuntime.cs
- DateTimeParse.cs
- RuntimeResourceSet.cs
- VisualBasic.cs