Bitmap.ConvertToBW method - Developer Area

API Documentation > Corel DESIGNER > 2023-v24.5 > Bitmap > IVGBitmap

Bitmap.ConvertToBW method

Converts the bitmap to black and white color mode

Syntax:

Sub ConvertToBW(ByVal RenderType As cdrRenderType, Optional ByVal Intensity As Long = 100, Optional ByVal Threshold As Long = 128, Optional ByVal Halftone As cdrHalftoneType = cdrHalftoneSquare, Optional ByVal HalftoneAngle As Long = 45, Optional ByVal HalftoneSize As Long = 0)

Parameters:

Name	Type	Description
RenderType	cdrRenderType	Specifies the type of conversion
Intensity	Long	Specifies the intensity of the applied color.
Threshold	Long	Specifies the tolerance level for tonal variation for a line art conversion.
Halftone	cdrHalftoneType	Specifies a halftone screen.
HalftoneAngle	Long	Specifies the halftone angle.
HalftoneSize	Long	Specifies the lines per unit for a halftone conversion.

Remarks:

The ConvertToBW method converts the bitmap to the black and white color mode.

Examples:

The following VBA example converts all bitmaps on the active page to the black-and-white color mode.

Sub Test()
  Dim s As Shape
  For Each s In ActivePage.Shapes
    If s.Type = cdrBitmapShape Then
      If s.Bitmap.Mode = cdrRGBColorImage Then
        s.Bitmap.ConvertToBW cdrRenderLineArt, , 97
      End If
    End If
  Next s
End Sub

Version Information:

CorelDRAW:	X7.4, X7, X7.6, X8, 2017, 2018, 2019, 2019.2, 2020, 2021, 2020.1, 2021.5, 2022-v24, 2022-v24.1, 2022-v24.2, 2023-v24.3, 2023-v24.5, 2024-v25
Corel DESIGNER:	X7, 2017.1, 20.1, 2019.2, 2020.1, 2021.5, 2022-v24, 2022-v24.1, 2022-v24.2, 2023-v24.3, 2023-v24.5, 2024-v25