Leadtools.Annotations Namespace > AnnAutomation Class : ShowObjectContextMenu Method |
'Usage Dim instance As AnnAutomation Dim pos As Point instance.ShowObjectContextMenu(pos)
function Leadtools.Annotations.AnnAutomation.ShowObjectContextMenu( pos )
Call the CanShowObjectContextMenu property to determine whether the object context menu can be displayed at this time. The context menu used is the AnnAutomationObject.ContextMenu for the object type currently bring edited. If the value of AnnAutomationObject.ContextMenu is null (Nothing in Visual Basic), this method will not do anything.
This AnnAutomation will call this method when the user right-clicks the mouse cursor over the currently selected (edited) object. If the user clicks outside any selected objects, the ShowContextMenu method will be called instead. You can call this method to display this context menu manually (for example, as a result from clicking on a certain menu item in your application).
If the AnnAutomationManager.ContextMenu value is null (Nothing in Visual Basic), this method will not do anything.
Public Sub AnnAutomation_ShowObjectContextMenu(ByVal automation As AnnAutomation) ' first add a new object to the automation Dim rectObj As AnnRectangleObject = New AnnRectangleObject() rectObj.Bounds = New AnnRectangle(100, 100, 100, 100, AnnUnit.Pixel) rectObj.Pen = New AnnPen(Color.Blue, New AnnLength(1, AnnUnit.Pixel)) rectObj.Brush = New AnnSolidBrush(Color.Yellow) automation.Container.Objects.Add(rectObj) automation.Viewer.Invalidate(rectObj.InvalidRectangle) ' make sure no objects are selected in the automation automation.SelectNone() ' show the object context menu (this should show a message informing you that no objects are currently selected (bring edited) ShowContextMenu(automation) ' select (edit) the object we have just added automation.StartEditing(rectObj, False) ' show the object context menu (should show the object context menu) ShowContextMenu(automation) End Sub Private Sub ShowContextMenu(ByVal automation As AnnAutomation) ' check if we can show the context menu If automation.CanShowObjectContextMenu Then ' use the right-bottom position of the object invalid rectangle as the position of the menu Dim rc As Rectangle = automation.CurrentEditObject.InvalidRectangle Dim pos As Point = New Point(rc.Right, rc.Bottom) automation.ShowObjectContextMenu(pos) Else MessageBox.Show("Cannot show the object context menu because no object is currently being edited (selected)") End If End Sub
public void AnnAutomation_ShowObjectContextMenu(AnnAutomation automation) { // first add a new object to the automation AnnRectangleObject rectObj = new AnnRectangleObject(); rectObj.Bounds = new AnnRectangle(100, 100, 100, 100, AnnUnit.Pixel); rectObj.Pen = new AnnPen(Color.Blue, new AnnLength(1, AnnUnit.Pixel)); rectObj.Brush = new AnnSolidBrush(Color.Yellow); automation.Container.Objects.Add(rectObj); automation.Viewer.Invalidate(rectObj.InvalidRectangle); // make sure no objects are selected in the automation automation.SelectNone(); // show the object context menu (this should show a message informing you that no objects are currently selected (bring edited) ShowContextMenu(automation); // select (edit) the object we have just added automation.StartEditing(rectObj, false); // show the object context menu (should show the object context menu) ShowContextMenu(automation); } private void ShowContextMenu(AnnAutomation automation) { // check if we can show the context menu if(automation.CanShowObjectContextMenu) { // use the right-bottom position of the object invalid rectangle as the position of the menu Rectangle rc = automation.CurrentEditObject.InvalidRectangle; Point pos = new Point(rc.Right, rc.Bottom); automation.ShowObjectContextMenu(pos); } else MessageBox.Show("Cannot show the object context menu because no object is currently being edited (selected)"); }
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2