Visual Studio 2008 >>Scale a Polyline

Scale a Polyline - Transformation??

Index ‹ Visual Studio 2008 ‹ Windows Presentation Foundation (WPF)

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- 1
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    I came across this from John Gossman and wonder whether it still holds true. (see http://blogs.msdn.com/johngossman/archive/2006/03/04/543695.aspx)
    
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                      From="0" Duration="0:0:10"
    
                      RepeatBehavior="Forever">
    
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                      </DoubleAnimation.To>
    
                    </DoubleAnimation>
    
                  </Storyboard>
    
                </BeginStoryboard>
    
              </DataTrigger.EnterActions>
    
            </DataTrigger>
    
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        </ControlTemplate>
    
    </Window.Resources>
    
    <StackPanel Margin="20" Background="Beige" Height="100">
    
        <ContentControl Template="{StaticResource CTemplateKey}"/>
    
    </StackPanel>
    
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    Lately, We have been testing word 12 out to see if it fits us and migrating does not hurt current business logic, And we were unable to mimic this behavior - The class Word.Document.12 does not contain the same registry value and the document, When navigated in the browser control by code, Simply lauches a word window instead.
    
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    The code sample in server side:
    
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Author

Message

F. Gsell

Posted: Windows Presentation Foundation (WPF), Scale a Polyline - Transformation??

Top

Hi together,

I have got a polyline object which is used for drawing a chart on a canvas object. Now I want to tranform the polyline object to fit on the canvas. So first I want to calculate the needed scaletransform object. To do this, I tried to get the width and heigth of the polyline so that I can calculate the transformation in respect to the canvas. But I alwas get "0,0" for the width and height of the polyline (RenderSize, ActualHeight, ActualWidth and so on).

So my question, how can I calculate the necessary transformation when I can't get the current width or height of the polyline object

Cheers,
Franz

Visual Studio 200832

Thilak Nathen

Posted: Windows Presentation Foundation (WPF), Scale a Polyline - Transformation??

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What is the polyline sitting on A custom control

If you render your polyline on a class that inherits from FrameworkElement, you get to override the OnRender method. The drawingContext.RenderSize should contain the width and height you need.

Anthony Hodsdon - MSFT

Posted: Windows Presentation Foundation (WPF), Scale a Polyline - Transformation??

Top

Please see my other post @ http://forums.microsoft.com/MSDN/ShowPost.aspx PostID=826865&SiteID=1. The shape classes have the power to do this resizing for you. To enable this functionality, you'll want to set the Stretch property on Polyline to either Fill or Uniform. Note that you'll also need to make sure that the parent element has the ability to resize its children (Grid, for instance, does, but Canvas does not).

You might well wonder what all those Width, ActualWidth, etc... properties are for, and why they don't seem to work when you use them. ActualWidth is just about what you want, the gotcha is that it will only report an accurate value after layout has been run (it's layout, after all, that determines what the size of the polyline will be), and once layout has been run, it's already too late to start inserting transforms in. Width, on the other hand, is a hint to tell layout what size you'd like the shape to be. Hence, it's very rarely useful to read its value.

Index ‹ Visual Studio 2008 ‹ Windows Presentation Foundation (WPF)

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    at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
    
    at System.Windows.Forms.Control.CreateControl()
    
    at System.Windows.Forms.Control.WmShowWindow(Message& m)
    
    at System.Windows.Forms.Control.WndProc(Message& m)
    
    at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
    
    at System.Windows.Forms.ContainerControl.WndProc(Message& m)
    
    at System.Windows.Forms.Form.WmShowWindow(Message& m)
    
    at System.Windows.Forms.Form.WndProc(Message& m)
    
    at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m)
    
    at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m)
    
    at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
    
    at System.Windows.Forms.SafeNativeMethods.ShowWindow(HandleRef hWnd, Int32 nCmdShow)
    
    at System.Windows.Forms.Control.SetVisibleCore(Boolean value)
    
    at System.Windows.Forms.Form.SetVisibleCore(Boolean value)
    
    at System.Windows.Forms.Control.set_Visible(Boolean value)
    
    at System.Windows.Forms.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
    
    at System.Windows.Forms.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
    
    at System.Windows.Forms.Application.Run(Form mainForm)
    
    at WindowsApplication2.Form1.Main() in C:\Documents and Settings\ckohrman\My Documents\Visual Studio Projects\WindowsApplication2\Form1.vb:line 6The program '[3824] WindowsApplication2.exe' has exited with code 0 (0x0).
- 11
  - Windows Communication Foundation ("Indigo") [Help]Service call from a callback handler
    There are couple of client applications connected to the server. When one of client program submits the request to server, for instance, changing or deleting an entity, the server program will process related data, and then call back to all the clients (broadcast) to notify the data changes. To use less communication, in the callback, not the entire changed object is transferred to client. Instead, the callback simply passes the ID of the changed entity to client side. When client is interested in that change, it then ask server for the whole object; otherwise, the callback will do nothing. The reason for this is because some object is quite large in my system.
    
    Here is my issue. For example, client A submitted a request to server. After server finished the request, it called back to client A to notify that entity E was changed. If entity E was edited or viewed by client A, it then asked server for the whole object of entity E to refresh UI. For WCF, if this request is implemented in the callback handler, it will be a communication loop and is not allowed.
    
    Currently I simply started a timer in the callback handler. In the timer event handler, a request of whole object will be submitted to server. It worked when only one client connected to server. When multiple clients are connected to server and they all viewing the same entity, then there seems to be some problem. A timeout exception will happen.
    
    I think there should be some better way to handle this type of problem. Using timer is really tricky from coding point of view.
    
    Thanks in advance for all the helps.
- 12
  - Windows Communication Foundation ("Indigo") Impersonation problem?
    Hi,
    
    I seem to have discovered some rather strange behaviour inside a service when trying to impersonate the caller.
    
    I'm using WsHttp binding with default settings - no additional BindingConfiguration specified. My client side proxy is generated using the 'Add Service Reference' function from Visual Studio.
    
    The problem arises when the clientside proxy has its AllowedImpersonation property incorrectly set to the default 'Identify value', as in
    
    proxy.ClientCredentials.Windows.AllowedImpersonationLevel = System.Security.Principal.TokenImpersonationLevel.Identification;
    
    On the server side, I'd expect the
    
    WindowsImpersonationContext impersonation = ServiceSecurityContext.Current.WindowsIdentity.Impersonate();
    
    call to fail, but it doesn't. In fact I get 'Access Denied' exceptions later on when the service code attempts to access code in dependent assemblies - despite the fact that both the original service identity and the calling identity have access to all the appropriate files.
    
    In the debugger, System.Threading.Thread.CurrentPrincipal shows 'Name' as the impersonated client account name, but the AuthenticationType property cannot be read, displaying 'System.UnauthorisedAccessException'.
    
    I'd emphasise that when the client sets the allowed impersonation correctly, the impersonation succeeds as I'd expect. It's just that errors are not reported in a helpful manner when the client side code is incorrect.
    
    David
- 13
  - Visual Studio Setup and Installation Problem with Visual Studio 2005Hi, I installed Visual Studio 2005 and it was working perfect till yesterday. I installed another SW Development (DevCpp) to study the differences. The problem is that now when I try to create a project with Visual C++ it hangs I can’t do anything. I tried to uninstall both and reinstall Visual Studio 2005 only, but still same problem. The problem is only with Visual C++, if I try to create new project in any other language there is no problem. Anyone can help
    
    Thanks, regards
- 14
  - Visual Studio Tools for Office range into array? subscript out of range vba excel
    I have the following code using this array works:   myArr = Array("test", "3", "5")
    
    but when i try this: myArr = Range("a1:a3").Value it doesnt work.
    
    This code fails then and it says:subscript out of range:
    
    Set Rng = blad3.range("A:A").Find(What:=myArr(I), _
                        After:=range("A" & Rows.Count), _
                        LookIn:=xlFormulas, _
                        LookAt:=xlWhole, _
                        SearchOrder:=xlByRows, _
                        SearchDirection:=xlNext, _
                        MatchCase:=False)
    
    complete code:
    
    Sub FindExample1()
        'Dim myArr As Variant
        Dim Rng As range
    
       ' Dim I As Long
    
        Application.ScreenUpdating = False
    
       ' myArr = Worksheets("blad2").Range("a1:A9")
       ' myArr = Range("a1:A9")
        'myArr = Range("a1:a3").Value
       myArr = Array("test", "3", "5")
    
        'You can also use more then one value in the Array
    ' Application.Worksheets("Blad3").Activate
    
        For I = LBound(myArr) To UBound(myArr)
        Do
               'MsgBox myArr(I, 1)
    
                Set Rng = blad3.range("A:A").Find(What:=myArr(I), _
                        After:=range("A" & Rows.Count), _
                        LookIn:=xlFormulas, _
                        LookAt:=xlWhole, _
                        SearchOrder:=xlByRows, _
                        SearchDirection:=xlNext, _
                        MatchCase:=False)
                'If you want to search in a part of the rng.value then use xlPart
                'if you use LookIn:=xlValues it will also delete rows with a
                'a formula that evaluates to "ron"
                If Not Rng Is Nothing Then Rng.EntireRow.Delete
            Loop While Not (Rng Is Nothing)
        Next I
        Application.ScreenUpdating = True
    End Sub
    
    can someone help me filling that array by using a range
- 15
  - Visual J# General InterruptedIOException Not Thrown
    Unlike J++, java.net.Socket.getInputStream().read() with SoTimeout set to a value greater than 0, does not throw a java.net.InterruptedIOException when the timeout period expires. Instread, the operation throws a java.net.SocketException. E.g.:
    
    ServerSocket serverSocket = new ServerSocket(port);
    Socket socket = serverSocket.accept();
    socket.setSoTimeout(1000);
    int b = socket.getInputStream().read();
    
    SocketException: java.net.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond
    
    Anyone have a code snippet to that will cause an InterruptedIoException to be thrown

private void CopyTable(SlideItem item)

{

Excel.Name name;

name = wb.Names.Item("chart item name",Constants.missing, Constants.missing) as Excel.Name;

name.RefersToRange.CopyPicture(Excel.XlPictureAppearance.xlPrinter,Excel.XlCopyPictureFormat.xlPicture);

Marshal.ReleaseComObject(name);

name=null;

}

private void CopyChart(string chartName,string chartTitle)

{

(wb.Charts[chartName] as Excel.Chart).HasTitle = true;

(wb.Charts[chartName] as Excel.Chart).ChartTitle.Font.Size = config.FontSize;

(wb.Charts[chartName] as Excel.Chart).ChartTitle.Text = chartTitle;

(wb.Charts[chartName] as Excel.Chart).CopyPicture(Excel.XlPictureAppearance.xlPrinter,Excel.XlCopyPictureFormat.xlPicture,Excel.XlPictureAppearance.xlPrinter);

}