GdPictureImaging.TwainGetBitDepth Method

Returns the pixel bit depths for the Current value of PixelType. For example, when using TwainSetPixelType(TWPT_GRAY), this capability specifies whether this is 8-bit gray or 4-bit gray.

public int TwainGetBitDepth();

Visual Basic

Public Function TwainGetBitDepth() As Integer

Returns

If success: bit depth value. Else 0 if fail -> Use TwainGetLastResultCode() and TwainGetLastConditionCode() functions for diagnosing the error.

Remarks

Only available with 1bpp image (PixelType == TWPT_BW)

Before using this function check that the TWAIN state is >= 4 (TWAIN_SOURCE_OPEN)

To get the TWAIN state, use the TwainGetState() function.