Determines whether a TWAIN source is installed.
public static bool IsAvailable(
IntPtr owner
)
Public Shared Function IsAvailable( _
ByVal owner As IntPtr _
) As Boolean
public:
static bool IsAvailable(
IntPtr owner
)
owner
Window handle of the application window.
true if at least one TWAIN source is installed, false if no TWAIN source is installed.
As an example, this method can be used to enable or disable the TWAIN menu items.
using Leadtools;
using Leadtools.Twain;
public void IsAvailableExample(IntPtr parent)
{
bool twainAvailable = TwainSession.IsAvailable(parent);
if (twainAvailable)
MessageBox.Show("Twain is installed");
else
MessageBox.Show("Twain is not installed");
}
Imports Leadtools
Imports Leadtools.Twain
Public Sub IsAvailableExample(ByVal parent As IntPtr)
Dim twainAvailable As Boolean = TwainSession.IsAvailable(parent)
If twainAvailable Then
MessageBox.Show("Twain is installed")
Else
MessageBox.Show("Twain is not installed")
End If
End Sub
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document