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Lock Method

Summary

Locks the object(s) currently being edited (selected).

Syntax

C#
VB
C++
public virtual void Lock() 
  
Public Overridable Sub Lock()  
public: 
virtual void Lock();

Remarks

Use the CanLock property to determine whether you can currently call this method.

This method opens the AnnAutomationManager.PasswordDialogType window and uses the value entered in this dialog as the password to AnnObject.Lock.

If the AnnAutomationManager.PasswordDialogType value is null (Nothing in VB), this method will not do anything.

For more information, refer to Implementing WPF Annotation Security..

Example

C#
VB
Silverlight C#
Silverlight VB
using Leadtools.Windows.Controls; 
using Leadtools.Windows.Annotations; 
using Leadtools.Demos; 
using Leadtools.Help; 
 
private void AnnAutomation_Lock(AnnAutomation automation) 
{ 
   // first add a new object to the automation 
   AnnRectangleObject rectObj = new AnnRectangleObject(); 
   rectObj.Rect = new Rect(100, 100, 100, 100); 
   rectObj.Stroke = Colors.Blue; 
   rectObj.StrokeThickness = 1.0; 
   rectObj.Fill = Colors.Yellow; 
   rectObj.StrokeThickness = 1.0; 
   automation.Container.Children.Add(rectObj); 
 
   // make sure no objects are selected in the automation 
   automation.SelectNone(); 
 
   // see if we can lock or unlock the object (this should show a message informing you that no objects are currently selected (bring edited) 
   LockUnlock(automation); 
 
   // select (edit) the object we have just added 
   automation.StartEditing(rectObj, false); 
 
   // see if we can lock or unlock the object (should show the password dialog to lock the object) 
   LockUnlock(automation); 
 
   // see if we can lock or unlock the object (should show the password dialog to unlock the object) 
   LockUnlock(automation); 
} 
 
private void LockUnlock(AnnAutomation automation) 
{ 
   // first, check if we can lock the object 
   if (automation.CanLock) 
   { 
      // lock this object 
      automation.Lock(); 
   } 
   else if (automation.CanUnlock) 
   { 
      // unlock this object 
      automation.Unlock(); 
   } 
   else 
      MessageBox.Show("Cannot lock or unlock because no object is currently being edited (selected)"); 
} 
Imports Leadtools.Windows.Controls 
Imports Leadtools.Windows.Annotations 
 
Private Sub AnnAutomation_Lock(ByVal automation As AnnAutomation) 
   ' first add a new object to the automation 
   Dim rectObj As AnnRectangleObject = New AnnRectangleObject() 
   rectObj.Rect = New Rect(100, 100, 100, 100) 
   rectObj.Stroke = Colors.Blue 
   rectObj.StrokeThickness = 1.0 
   rectObj.Fill = Colors.Yellow 
   automation.Container.Children.Add(rectObj) 
 
   ' make sure no objects are selected in the automation 
   automation.SelectNone() 
 
   ' see if we can lock or unlock the object (this should show a message informing you that no objects are currently selected (bring edited) 
   LockUnlock(automation) 
 
   ' select (edit) the object we have just added 
   automation.StartEditing(rectObj, False) 
 
   ' see if we can lock or unlock the object (should show the password dialog to lock the object) 
   LockUnlock(automation) 
 
   ' see if we can lock or unlock the object (should show the password dialog to unlock the object) 
   LockUnlock(automation) 
End Sub 
 
Private Sub LockUnlock(ByVal automation As AnnAutomation) 
   ' first, check if we can lock the object 
   If automation.CanLock Then 
      ' lock this object 
      automation.Lock() 
   ElseIf automation.CanUnlock Then 
      ' unlock this object 
      automation.Unlock() 
   Else 
      MessageBox.Show("Cannot lock or unlock because no object is currently being edited (selected)") 
   End If 
End Sub 
using Leadtools.Windows.Controls; 
using Leadtools.Windows.Annotations; 
using Leadtools.Examples; 
using Leadtools.Silverlight.Demos; 
//using Leadtools.Help; 
 
private void AnnAutomation_Lock(AnnAutomation automation) 
{ 
   // first add a new object to the automation 
   AnnRectangleObject rectObj = new AnnRectangleObject(); 
   rectObj.Rect = new Rect(100, 100, 100, 100); 
   rectObj.Stroke = Colors.Blue; 
   rectObj.StrokeThickness = 1.0; 
   rectObj.Fill = Colors.Yellow; 
   rectObj.StrokeThickness = 1.0; 
   automation.Container.Children.Add(rectObj); 
 
   // make sure no objects are selected in the automation 
   automation.SelectNone(); 
 
   // see if we can lock or unlock the object (this should show a message informing you that  
   // no objects are currently selected (being edited) 
   LockUnlock(automation); 
 
   // select (edit) the object we have just added 
   automation.StartEditing(rectObj, false); 
 
   // see if we can lock or unlock the object (should show the password dialog to lock the object) 
   LockUnlock(automation); 
 
   // see if we can lock or unlock the object (should show the password dialog to unlock the object) 
   LockUnlock(automation); 
} 
 
private void LockUnlock(AnnAutomation automation) 
{ 
   // first, check if we can lock the object 
   if (automation.CanLock) 
   { 
      // lock this object 
      automation.Lock(); 
   } 
   else if (automation.CanUnlock) 
   { 
      // unlock this object 
      automation.Unlock(); 
   } 
   else 
      MessageBox.Show("Cannot lock or unlock because no object is currently being edited (selected)"); 
} 
Imports Leadtools.Windows.Controls 
Imports Leadtools.Windows.Annotations 
Imports Leadtools.Silverlight.Demos 
'using Leadtools.Help; 
 
Private Sub AnnAutomation_Lock(ByVal automation As AnnAutomation) 
   ' first add a new object to the automation 
   Dim rectObj As AnnRectangleObject = New AnnRectangleObject() 
   rectObj.Rect = New Rect(100, 100, 100, 100) 
   rectObj.Stroke = Colors.Blue 
   rectObj.StrokeThickness = 1.0 
   rectObj.Fill = Colors.Yellow 
   rectObj.StrokeThickness = 1.0 
   automation.Container.Children.Add(rectObj) 
 
   ' make sure no objects are selected in the automation 
   automation.SelectNone() 
 
   ' see if we can lock or unlock the object (this should show a message informing you that no objects are currently selected (bring edited) 
   LockUnlock(automation) 
 
   ' select (edit) the object we have just added 
   automation.StartEditing(rectObj, False) 
 
   ' see if we can lock or unlock the object (should show the password dialog to lock the object) 
   LockUnlock(automation) 
 
   ' see if we can lock or unlock the object (should show the password dialog to unlock the object) 
   LockUnlock(automation) 
End Sub 
 
Private Sub LockUnlock(ByVal automation As AnnAutomation) 
   ' first, check if we can lock the object 
   If automation.CanLock Then 
      ' lock this object 
      automation.Lock() 
   ElseIf automation.CanUnlock Then 
      ' unlock this object 
      automation.Unlock() 
   Else 
      MessageBox.Show("Cannot lock or unlock because no object is currently being edited (selected)") 
   End If 
End Sub

Requirements

Target Platforms

Help Version 19.0.2017.10.27
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