Atalasoft DotImage 11.4
Atalasoft DotImage Class Library
Atalasoft.Twain
Device Class
Device Methods
Acquire Method
CanOpen Method
ClearBuffers Method
Close Method
Disable Method
Dispose Method
Enable Method
EnableCamera Method
Finalize Method
GetConditionCode Method
GetFrames Method
GetQueryOperations Method
GetSupportedBarCodes Method
GetSupportedBitDepthReductionModes Method
GetSupportedBitDepths Method
GetSupportedBrightnessValues Method
GetSupportedCapabilities Method
GetSupportedCompressionModes Method
GetSupportedContrastValues Method
GetSupportedExposureTimes Method
GetSupportedExtendedCapabilities Method
GetSupportedFlashModes Method
GetSupportedFrameSizes Method
GetSupportedHalftones Method
GetSupportedHighlightValues Method
GetSupportedIccProfileOptions Method
GetSupportedImageFilters Method
GetSupportedImageFormats Method
GetSupportedJobControls Method
GetSupportedJpegPixelTypes Method
GetSupportedJpegQualityValues Method
GetSupportedLanguageTypes Method
GetSupportedLightPathModes Method
GetSupportedLightSourceModes Method
GetSupportedMaxBatchBuffers Method
GetSupportedNativeResolutions Method
GetSupportedNoiseFilterModes Method
GetSupportedOrientationModes Method
GetSupportedOverscanModes Method
GetSupportedPatchCodes Method
GetSupportedPixelTypes Method
GetSupportedPowerSupplies Method
GetSupportedPrinterModes Method
GetSupportedPrinters Method
GetSupportedResolutions Method
GetSupportedRotations Method
GetSupportedScalingValues Method
GetSupportedShadowValues Method
GetSupportedThresholdValues Method
GetSupportedTransferMethods Method
GetSupportedUnitTypes Method
GetSupportedZoomFactors Method
LoadParameters Method
LoadXmlParameters Method
Open Method
PreFilterMessage Method
QueryCapability Method
SaveParameters Method
SaveXmlParameters Method
SetCameraPixelOrder Method
SetExtendedCapabilities Method
SetExtendedImageInfoOptions Method
SetFrames Method
SetImageDataset Method
SetImprinterEndorser Method
ShowUserInterface Method
StartAutomaticCapture Method
ToString Method
TryOpen Method
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DeviceQueryCapability Method

Determines if a capability is available from the device.

It's unlikely that any one device supports all of the properties and features. You can use this method to find out if a property is get-able and/or set-able. This can also be used to help determine if the device is a camera by checking for camera specific properties, such as FlashUsed or BatteryPercentage.

Namespace:  Atalasoft.Twain
Assembly:  Atalasoft.DotTwain (in Atalasoft.DotTwain.dll) Version: 11.4.0.9.0.377 (.NET 4.5.2, x86)
Syntax
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public bool QueryCapability(
	DeviceCapability capability,
	bool canSet
)

Parameters

capability
Type: Atalasoft.TwainDeviceCapability
The capability you want to check.
canSet
Type: SystemBoolean
If true, this method checks to see if this capability can also be set.

Return Value

Type: Boolean
True if the capability is available.
Exceptions
ExceptionCondition
Thrown if a connection to the device is not open.
Examples
QueryCapability (C#)
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Device dev = this.acquisition.Devices.Default;
dev.Open();

// See if you can set the Resolution.
bool canSetRes = dev.QueryCapability(DeviceCapability.ResolutionX, true);

dev.Close();
QueryCapability (Visual Basic)
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Dim dev As Device =  Me.acquisition.Devices.Default 
dev.Open()

' See if you can set the Resolution.
Dim canSetRes As Boolean =  dev.QueryCapability(DeviceCapability.ResolutionX,True) 

dev.Close()
See Also