←Select platform

Invalidate(LeadRectD) Method (ImageViewer)

Summary

Invalidates a portion of the entire surface of the control and causes the control to be redrawn.

Syntax

C#
VB
C++
public virtual void Invalidate( 
   LeadRectD rc 
) 
Public Overridable Sub Invalidate( 
   ByVal rc As LeadRectD 
) 
public:  
   virtual void Invalidate( 
      LeadRectD^ rc 
   )

Parameters

rc

Invalidate rectangle in control coordinates. Pass a LeadRectD or a rectangle with 0 width or height to invalidate

the entire surface of the control.

Remarks

Calling Invalidate will cause the viewer to re-render the content of the view and items. The value of rc will be used as the invalid rectangle used with ImageViewerRenderEventArgs and if it is not empty, only that portion of the viewer will updated.

To re-render a single item quickly, use InvalidateItem or InvalidateItemByIndex.

For more information, refer to Image Viewer Rendering.

Requirements

Target Platforms

Products | Support | Contact Us | Copyright Notices
© 1991-2017 LEAD Technologies, Inc. All Rights Reserved.
Leadtools.Controls.WinForms Assembly
Introduction
Getting Started
Namespaces
Leadtools.Controls Namespace
Classes
ControlRegionRenderer
ImageViewer
Members
ImageViewer Constructors
Methods
BeginRender Method
BeginTransform Method
BeginUpdate Method
CenterAtPoint Method
CombineFloater Method
ConvertBoundsToView Method
ConvertPoint Method
ConvertPoints Method
ConvertRect Method
ConvertTransform Method
DisableSync Method
EnableSync Method
EndRender Method
EndTransform Method
EndUpdate Method
EnsureBoundsVisible Method
EnsureItemVisible Method
EnsureItemVisibleByIndex Method
FindNearestItem Method
GetDestinationRectangle Method
GetFirstVisibleItem Method
GetFirstVisibleItemIndex Method
GetImageTransformWithDpi Method
GetItemBounds Method
GetItemContentTransform Method
GetItemFloaterSize Method
GetItemFloaterTransform Method
GetItemImageFloatingPointTransform Method
GetItemImageSize Method
GetItemImageTransform Method
GetItemImageTransformWithDpi Method
GetItemTransform Method
GetItemViewBounds Method
GetLargestVisibleItem Method
GetLargestVisibleItemIndex Method
GetLastVisibleItem Method
GetLastVisibleItemIndex Method
GetScaleFactors Method
GetSynced Method
GetViewBounds Method
GotoItem Method
GotoItemByIndex Method
HitTestFloater Method
HitTestItem Method
HitTestItemPart Method
HitTestItems Method
Invalidate Method
Invalidate(LeadRect) Method (ImageViewer)
Invalidate(LeadRectD) Method (ImageViewer)
InvalidateItem Method
InvalidateItemByIndex Method
IsItemVisible Method
IsSyncDisabled Method
OnTransformChanged Method
OnVirtualizeItemReady Method
RenderRedirect Method
Reset Method
RestrictScrollOffset Method
ScrollBy Method
ScrollByRestrict Method
Sync Method
TranslateItemScaleFactor Method
Unsync Method
UnsyncGroup Method
UpdateTransform Method
Zoom Method
ZoomToRect Method
Dispose(bool)(bool) Method
GetItemImageTransformScaleOnly Method
IsInputKey Method
OnActiveItemChanged Method
OnDragDrop Method
OnDragEnter Method
OnDragLeave Method
OnDragOver Method
OnItemChanged Method
OnItemDragDrop Method
OnItemError Method
OnMouseDown Method
OnPaint Method
OnPaintBackground Method
OnPostRender Method
OnPostRenderItem Method
OnPreRender Method
OnPreRenderItem Method
OnPropertyChanged Method
OnRedirectRender Method
OnRender Method
OnRenderBackground Method
OnRenderBorder Method
OnRenderError Method
OnRenderImage Method
OnRenderItem Method
OnRenderItemFloater Method
OnRenderItemFloaterRegion Method
OnRenderItemRegion Method
OnRenderShadow Method
OnRenderText Method
OnScrollOffsetChanged Method
OnSelectedItemsChanged Method
OnSizeChanged Method
ProcessDropImage Method
WndProc Method
Properties
Events
ImageViewerActiveItemInteractiveMode
ImageViewerAddRegionInteractiveMode
ImageViewerAutoPanInteractiveMode
ImageViewerCenterAtInteractiveMode
ImageViewerDragInteractiveMode
ImageViewerFloaterInteractiveMode
ImageViewerHorizontalViewLayout
ImageViewerInteractiveMode
ImageViewerInteractiveModes
ImageViewerItem
ImageViewerItemChangedEventArgs
ImageViewerItemDragDropEventArgs
ImageViewerItemErrorEventArgs
ImageViewerItems
ImageViewerMagnifyGlassInteractiveMode
ImageViewerNoneInteractiveMode
ImageViewerPagerInteractiveMode
ImageViewerPanControl
ImageViewerPanZoomInteractiveMode
ImageViewerRenderEventArgs
ImageViewerRenderRedirectOptions
ImageViewerRubberBandEventArgs
ImageViewerRubberBandInteractiveMode
ImageViewerSelectItemsInteractiveMode
ImageViewerSingleViewLayout
ImageViewerSpyGlassDrawImageEventArgs
ImageViewerSpyGlassInteractiveMode
ImageViewerVerticalViewLayout
ImageViewerViewLayout
ImageViewerViewLayoutVector
ImageViewerVirtualizer
ImageViewerVirtualizerEventArgs
ImageViewerZoomAtInteractiveMode
ImageViewerZoomToInteractiveMode
InteractiveDragCompletedEventArgs
InteractiveDragDeltaEventArgs
InteractiveDragStartedEventArgs
InteractiveEventArgs
InteractiveKeyEventArgs
InteractiveMultiTouchEventArgs
InteractivePinchCompletedEventArgs
InteractivePinchDeltaEventArgs
InteractivePinchStartedEventArgs
InteractiveService
RasterClipboard
RasterImagePrinter
RasterPictureBox
RasterPictureBoxFrameChangedEventArgs
Delegates
Enumerations
Structures
Assemblies
Click or drag to resize