Queries the specified location to determine if the point is over an
IImageListItem.
Supported in Silverlight, Windows Phone 7
Syntax
Visual Basic (Declaration) | |
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Public Function HitTest( _
ByVal point As Point _
) As Integer |
Visual Basic (Usage) | Copy Code |
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Dim instance As ImageList
Dim point As Point
Dim value As Integer
value = instance.HitTest(point) |
Parameters
- point
- The horizontal and vertical position of the coordinate in client coordinates.
Return Value
The index of the item in
ItemsSource under the given location, or -1 if no
IImageListItem is under the location.
Example
Visual Basic | Copy Code |
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Private Class MyWindow3 : Inherits Window
Private imageList As ImageList
Public Sub New(ByVal title As String)
title = title
' Set the size of the form
Width = 400
Height = 200
' Create a new ImageList control
imageList = New ImageList()
imageList.Background = Brushes.Red
imageList.SelectionMode = SelectionMode.Single
imageList.Width = Width
imageList.Height = Height
Content = imageList
' Create three items
Dim imagesPath As String = LEAD_VARS.ImagesDir
For i As Integer = 0 To 2
' Load the image
Dim index As Integer = i + 1
Dim imageFileName As String = Path.Combine(imagesPath, "ImageProcessingDemo\Image" & index.ToString() & ".jpg")
Dim item As ImageListItem = New ImageListItem()
item.Source = New BitmapImage(New Uri(imageFileName))
item.Text = "item" & index.ToString()
' Select the first item
If i = 0 Then
item.IsSelected = True
End If
' Add the item to the image list
imageList.Items.Add(item)
Next i
' Add a handler to the MouseDown event
AddHandler imageList.PreviewMouseDown, AddressOf ImageList_MouseDown
End Sub
Private Sub ImageList_MouseDown(ByVal sender As Object, ByVal e As MouseButtonEventArgs)
' Check for right button clicks
If e.RightButton = MouseButtonState.Pressed Then
' Check if any item is under the cursor poisition
Dim imageList As ImageList = TryCast(sender, ImageList)
Dim item As ImageListItem = TryCast(imageList.Items(imageList.HitTest(e.GetPosition(imageList))), ImageListItem)
If Not item Is Nothing Then
' Yes, show the item text in a message box
MessageBox.Show(Me, item.Text)
End If
End If
End Sub
End Class
Public Sub ImageList_HitTest(ByVal title As String)
Dim window As MyWindow3 = New MyWindow3(title)
window.ShowDialog()
End Sub
Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class |
C# | Copy Code |
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class MyWindow3 : Window
{
ImageList imageList;
public MyWindow3(string title)
{
Title = title;
// Set the size of the form
Width = 400;
Height = 200;
// Create a new ImageList control
imageList = new ImageList();
imageList.Background = Brushes.Red;
imageList.SelectionMode = SelectionMode.Single;
imageList.Width = Width;
imageList.Height = Height;
Content = imageList;
// Create three items
string imagesPath = LEAD_VARS.ImagesDir;
for (int i = 0; i < 3; i++)
{
// Load the image
int index = i + 1;
string imageFileName = Path.Combine(imagesPath, @"ImageProcessingDemo\Image" + index.ToString() + ".jpg");
ImageListItem item = new ImageListItem();
item.Source = new BitmapImage(new Uri(imageFileName));
item.Text = "item" + index.ToString();
// Select the first item
if (i == 0)
item.IsSelected = true;
// Add the item to the image list
imageList.Items.Add(item);
}
// Add a handler to the MouseDown event
AddHandler(ImageListItem.MouseDownEvent, new MouseButtonEventHandler(ImageList_MouseDown));
imageList.PreviewMouseDown += new MouseButtonEventHandler(ImageList_MouseDown);
}
private void ImageList_MouseDown(object sender, MouseButtonEventArgs e)
{
// Check for right button clicks
if (e.RightButton == MouseButtonState.Pressed)
{
// Check if any item is under the cursor poisition
ImageList imageList = sender as ImageList;
ImageListItem item = imageList.Items[imageList.HitTest(e.GetPosition(imageList))] as ImageListItem;
if (item != null)
{
// Yes, show the item text in a message box
MessageBox.Show(this, item.Text);
}
}
}
}
public void ImageList_HitTest(string title)
{
MyWindow3 window = new MyWindow3(title);
window.ShowDialog();
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
} |
SilverlightCSharp | Copy Code |
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class MyWindow3 : ChildWindow
{
ImageList imageList;
public MyWindow3(string title)
{
Title = title;
// Set the size of the form
Width = 400;
Height = 200;
// Create a new ImageList control
imageList = new ImageList();
imageList.Background = new SolidColorBrush(Colors.Red);
imageList.SelectionMode = SelectionMode.Single;
imageList.Width = Width;
imageList.Height = Height;
Content = imageList;
// Create three items
string imagesPath = LeadtoolsExamples.Common.ImagesPath.Path;
for (int i = 0; i < 3; i++)
{
// Load the image
int index = i + 1;
string imageFileName = imagesPath + "Image" + index.ToString() + ".jpg";
ImageListItem item = new ImageListItem();
item.Source = new BitmapImage(new Uri(imageFileName));
item.Text = "item" + index.ToString();
// Select the first item
if (i == 0)
item.IsSelected = true;
// Add the item to the image list
imageList.Items.Add(item);
}
// Add a handler to the MouseDown event
AddHandler(ImageListItem.MouseLeftButtonDownEvent, new MouseButtonEventHandler(imageList_MouseLeftButtonDown), false);
imageList.MouseLeftButtonDown +=new MouseButtonEventHandler(imageList_MouseLeftButtonDown);
}
void imageList_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
// Check if any item is under the cursor position
ImageList imageList = sender as ImageList;
ImageListItem item = imageList.Items[imageList.HitTest(e.GetPosition(imageList))] as ImageListItem;
if (item != null)
{
// Yes, show the item text in a message box
MessageBox.Show(item.Text);
}
}
}
public void ImageList_HitTest(string title)
{
MyWindow3 window = new MyWindow3(title);
window.Show();
} |
SilverlightVB | Copy Code |
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Private Class MyWindow3 : Inherits ChildWindow
Private imageList As ImageList
Public Sub New(ByVal title As String)
title = title
' Set the size of the form
Width = 400
Height = 200
' Create a new ImageList control
imageList = New ImageList()
imageList.Background = New SolidColorBrush(Colors.Red)
imageList.SelectionMode = SelectionMode.Single
imageList.Width = Width
imageList.Height = Height
Content = imageList
' Create three items
Dim imagesPath As String = LeadtoolsExamples.Common.ImagesPath.Path
For i As Integer = 0 To 2
' Load the image
Dim index As Integer = i + 1
Dim imageFileName As String = imagesPath & "Image" & index.ToString() & ".jpg"
Dim item As ImageListItem = New ImageListItem()
item.Source = New BitmapImage(New Uri(imageFileName))
item.Text = "item" & index.ToString()
' Select the first item
If i = 0 Then
item.IsSelected = True
End If
' Add the item to the image list
imageList.Items.Add(item)
Next i
' Add a handler to the MouseDown event
AddHandler imageList.MouseLeftButtonDown, AddressOf imageList_MouseLeftButtonDown
End Sub
Private Sub imageList_MouseLeftButtonDown(ByVal sender As Object, ByVal e As MouseButtonEventArgs)
' Check if any item is under the cursor position
Dim imageList As ImageList = TryCast(sender, ImageList)
Dim item As ImageListItem = TryCast(imageList.Items(imageList.HitTest(e.GetPosition(imageList))), ImageListItem)
If Not item Is Nothing Then
' Yes, show the item text in a message box
MessageBox.Show(item.Text)
End If
End Sub
End Class
Public Sub ImageList_HitTest(ByVal title As String)
Dim window As MyWindow3 = New MyWindow3(title)
window.Show()
End Sub |
Requirements
Target Platforms: Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family
See Also