The Cancel Method supports WPF/Silverlight.
The Cancel Method is available in LEADTOOLS Document and Medical Imaging toolkits.
Cancels the operation currently being performed in this
AnnAutomationSupported in Silverlight, Windows Phone 7
Syntax
| Visual Basic (Declaration) | |
|---|
Public Overridable Sub Cancel() |
| Visual Basic (Usage) |  Copy Code |
|---|
Dim instance As AnnAutomation
instance.Cancel() |
| C# | |
|---|
public virtual void Cancel() |
| C++/CLI | |
|---|
public:
virtual void Cancel(); |
Example
This example cancels the drawing of new objects when the mouse is over a certain area on the viewer.
| Visual Basic | Copy Code |
|---|
Private Sub AnnAutomation_Cancel()
' subclass to the viewer mouse move event
' _automation is an AnnAutomation object
AddHandler _automation.Container.MouseMove, AddressOf Container_MouseMove
End Sub
Private Sub Container_MouseMove(ByVal sender As Object, ByVal e As MouseEventArgs)
' check if we have a draw designer currently selected
If Not _automation.CurrentDesigner Is Nothing AndAlso TypeOf _automation.CurrentDesigner Is AnnDrawDesigner Then
' check if we are over the rectangle 100,100 to 200,200
Dim rc As Rect = New Rect(100, 100, 100, 100)
If rc.Contains(e.GetPosition(_automation.Container)) Then
_automation.Cancel()
End If
End If
End Sub |
| C# | Copy Code |
|---|
private void AnnAutomation_Cancel()
{
// subclass to the viewer mouse move event
// _automation is an AnnAutomation object
_automation.Container.MouseMove += new MouseEventHandler(Container_MouseMove);
}
private void Container_MouseMove(object sender, MouseEventArgs e)
{
// check if we have a draw designer currently selected
if(_automation.CurrentDesigner != null && _automation.CurrentDesigner is AnnDrawDesigner)
{
// check if we are over the rectangle 100,100 to 200,200
Rect rc = new Rect(100, 100, 100, 100);
if(rc.Contains(e.GetPosition(_automation.Container)))
_automation.Cancel();
}
} |
| SilverlightCSharp | Copy Code |
|---|
private void AnnAutomation_Cancel()
{
// subclass to the viewer mouse move event
// _automation is an AnnAutomation object
_automation.Container.MouseMove += new MouseEventHandler(Container_MouseMove);
}
private void Container_MouseMove(object sender, MouseEventArgs e)
{
// check if we have a draw designer currently selected
if(_automation.CurrentDesigner != null && _automation.CurrentDesigner is AnnDrawDesigner)
{
// check if we are over the rectangle 100,100 to 200,200
Rect rc = new Rect(100, 100, 100, 100);
if(rc.Contains(e.GetPosition(_automation.Container)))
_automation.Cancel();
}
} |
| SilverlightVB | Copy Code |
|---|
Private Sub AnnAutomation_Cancel()
' subclass to the viewer mouse move event
' _automation is an AnnAutomation object
AddHandler _automation.Container.MouseMove, AddressOf Container_MouseMove
End Sub
Private Sub Container_MouseMove(ByVal sender As Object, ByVal e As MouseEventArgs)
' check if we have a draw designer currently selected
If Not _automation.CurrentDesigner Is Nothing AndAlso TypeOf _automation.CurrentDesigner Is AnnDrawDesigner Then
' check if we are over the rectangle 100,100 to 200,200
Dim rc As Rect = New Rect(100, 100, 100, 100)
If rc.Contains(e.GetPosition(_automation.Container)) Then
_automation.Cancel()
End If
End If
End Sub |
Remarks
Requirements
Target Platforms: Silverlight 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)
See Also
