Gets all the supported values of the requested capability.
Syntax
Parameters
- type
- Indicates the capability to get.
Return Value
A TwainCapability object represents all the supported values of the requested capability.
Example
Visual Basic | Copy Code |
---|
Public Sub QueryCapabilityExample(ByVal parent As IWin32Window)
Try
Dim twnSession As TwainSession = New TwainSession()
twnSession.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None)
Dim twCap As TwainCapability = twnSession.QueryCapability(TwainCapabilityType.ImageUnits)
If twCap.Information.ContainerType = TwainContainerType.OneValue Then
If CType(twCap.OneValueCapability.Value, TwainCapabilityValue) <> TwainCapabilityValue.UnitInches Then
twCap.OneValueCapability.Value = TwainCapabilityValue.UnitInches
twnSession.SetCapability(twCap, TwainSetCapabilityMode.Set)
End If
End If
twnSession.Shutdown()
Catch ex As Exception
MessageBox.Show(ex.Message)
End Try
End Sub |
C# | Copy Code |
---|
public void QueryCapabilityExample(IWin32Window parent) { try { TwainSession twnSession = new TwainSession(); twnSession.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None); TwainCapability twCap = twnSession.QueryCapability(TwainCapabilityType.ImageUnits); if (twCap.Information.ContainerType == TwainContainerType.OneValue) { if (twCap.OneValueCapability.Value != (object)TwainCapabilityValue.UnitInches) { twCap.OneValueCapability.Value = TwainCapabilityValue.UnitInches; twnSession.SetCapability(twCap, TwainSetCapabilityMode.Set); } } twnSession.Shutdown(); } catch (Exception ex) { MessageBox.Show(ex.Message); } } |
Remarks
Requirements
Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family
See Also