Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / WinForms / Managed / System / WinForms / DrawItemEvent.cs / 1 / DrawItemEvent.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms { using System.Diagnostics; using System; using System.ComponentModel; using System.Drawing; using Microsoft.Win32; ////// /// This event is fired by owner draw Controls, such as ListBoxes and /// ComboBoxes. It contains all the information needed for the user to /// paint the given item, including the item index, the Rectangle in which /// the drawing should be done, and the Graphics object with which the drawing /// should be done. /// public class DrawItemEventArgs : EventArgs { ////// /// The backColor to paint each menu item with. /// private Color backColor; ////// /// The foreColor to paint each menu item with. /// private Color foreColor; ////// /// The font used to draw the item's string. /// private Font font; ////// /// The graphics object with which the drawing should be done. /// private readonly System.Drawing.Graphics graphics; ////// /// The index of the item that should be painted. /// private readonly int index; ////// /// The rectangle outlining the area in which the painting should be /// done. /// private readonly Rectangle rect; ////// /// Miscellaneous state information, such as whether the item is /// "selected", "focused", or some other such information. ComboBoxes /// have one special piece of information which indicates if the item /// being painted is the editable portion of the ComboBox. /// private readonly DrawItemState state; ////// /// Creates a new DrawItemEventArgs with the given parameters. /// public DrawItemEventArgs(Graphics graphics, Font font, Rectangle rect, int index, DrawItemState state) { this.graphics = graphics; this.font = font; this.rect = rect; this.index = index; this.state = state; this.foreColor = SystemColors.WindowText; this.backColor = SystemColors.Window; } ////// /// Creates a new DrawItemEventArgs with the given parameters, including the foreColor and backColor of the control. /// public DrawItemEventArgs(Graphics graphics, Font font, Rectangle rect, int index, DrawItemState state, Color foreColor, Color backColor) { this.graphics = graphics; this.font = font; this.rect = rect; this.index = index; this.state = state; this.foreColor = foreColor; this.backColor = backColor; } ///public Color BackColor { get { if ((state & DrawItemState.Selected) == DrawItemState.Selected) { return SystemColors.Highlight; } return backColor; } } /// /// /// The rectangle outlining the area in which the painting should be /// done. /// public Rectangle Bounds { get { return rect; } } ////// /// A suggested font, usually the parent control's Font property. /// public Font Font { get { return font; } } ////// /// A suggested color drawing: either SystemColors.WindowText or SystemColors.HighlightText, /// depending on whether this item is selected. /// public Color ForeColor { get { if ((state & DrawItemState.Selected) == DrawItemState.Selected) { return SystemColors.HighlightText; } return foreColor; } } ////// /// Graphics object with which painting should be done. /// public Graphics Graphics { get { return graphics; } } ////// /// The index of the item that should be painted. /// public int Index { get { return index; } } ////// /// Miscellaneous state information, such as whether the item is /// "selected", "focused", or some other such information. ComboBoxes /// have one special piece of information which indicates if the item /// being painted is the editable portion of the ComboBox. /// public DrawItemState State { get { return state; } } ////// /// Draws the background of the given rectangle with the color returned from the BackColor property. /// public virtual void DrawBackground() { Brush backBrush = new SolidBrush(BackColor); Graphics.FillRectangle(backBrush, rect); backBrush.Dispose(); } ////// /// Draws a handy focus rect in the given rectangle. /// public virtual void DrawFocusRectangle() { if ((state & DrawItemState.Focus) == DrawItemState.Focus && (state & DrawItemState.NoFocusRect) != DrawItemState.NoFocusRect) ControlPaint.DrawFocusRectangle(Graphics, rect, ForeColor, BackColor); } } } // 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
- FilteredAttributeCollection.cs
- PeerNameRegistration.cs
- TextDecoration.cs
- _SSPISessionCache.cs
- Validator.cs
- EmptyImpersonationContext.cs
- DesignerExtenders.cs
- InputMethod.cs
- AppDomainProtocolHandler.cs
- CorePropertiesFilter.cs
- DispatcherHookEventArgs.cs
- TableStyle.cs
- ServiceHostingEnvironment.cs
- _DigestClient.cs
- PersonalizablePropertyEntry.cs
- ResourceExpressionBuilder.cs
- StsCommunicationException.cs
- InvalidPrinterException.cs
- XmlSchemaException.cs
- PersianCalendar.cs
- PackWebRequestFactory.cs
- LineProperties.cs
- XmlSchemaChoice.cs
- AliasExpr.cs
- RichTextBoxAutomationPeer.cs
- AttributeData.cs
- OdbcCommand.cs
- NullableIntMinMaxAggregationOperator.cs
- safemediahandle.cs
- Site.cs
- PageFunction.cs
- TypeUnloadedException.cs
- DebugView.cs
- GetFileNameResult.cs
- KeyValueInternalCollection.cs
- HttpModuleActionCollection.cs
- TextEditorDragDrop.cs
- MachineSettingsSection.cs
- AvTraceFormat.cs
- IFlowDocumentViewer.cs
- FloatUtil.cs
- AlgoModule.cs
- FileLevelControlBuilderAttribute.cs
- RepeaterItem.cs
- SQLBoolean.cs
- Util.cs
- ScopelessEnumAttribute.cs
- UnicodeEncoding.cs
- ContextInformation.cs
- SpeechUI.cs
- CodeTypeConstructor.cs
- Properties.cs
- OleDbConnectionFactory.cs
- CacheDict.cs
- OleDbStruct.cs
- path.cs
- Number.cs
- Model3D.cs
- DefaultDialogButtons.cs
- XmlAttribute.cs
- XmlChildNodes.cs
- TemplatedWizardStep.cs
- CellTreeNodeVisitors.cs
- ComplexObject.cs
- ListDataHelper.cs
- NotConverter.cs
- WindowsBrush.cs
- SafeCryptHandles.cs
- WorkflowViewService.cs
- CounterNameConverter.cs
- DataTableReaderListener.cs
- EditorAttribute.cs
- DatatypeImplementation.cs
- StartUpEventArgs.cs
- HtmlForm.cs
- XmlHierarchicalDataSourceView.cs
- UIPermission.cs
- MessageSmuggler.cs
- SimpleLine.cs
- PrefixQName.cs
- DecimalStorage.cs
- __ComObject.cs
- ToolStripOverflowButton.cs
- PolyQuadraticBezierSegment.cs
- DataKeyArray.cs
- DetailsViewInsertedEventArgs.cs
- NativeCompoundFileAPIs.cs
- ReadOnlyHierarchicalDataSource.cs
- BrowserCapabilitiesFactory.cs
- StringExpressionSet.cs
- SchemaElementDecl.cs
- JsonSerializer.cs
- TextContainerChangedEventArgs.cs
- DiagnosticTrace.cs
- StylusPointPropertyInfoDefaults.cs
- ErrorReporting.cs
- Crc32.cs
- XmlILIndex.cs
- RuleSetDialog.cs
- ThicknessAnimationUsingKeyFrames.cs