- type
- Type of DIB to create.
Visual Basic (Declaration) | |
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Public Function ToDib( _ ByVal type As RasterConvertToDibType _ ) As IntPtr |
Visual Basic (Usage) | ![]() |
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Dim instance As RasterImage Dim type As RasterConvertToDibType Dim value As IntPtr value = instance.ToDib(type) |
C# | |
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public IntPtr ToDib( RasterConvertToDibType type ) |
C++/CLI | |
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public: IntPtr ToDib( RasterConvertToDibType type ) |
Parameters
- type
- Type of DIB to create.
Return Value
A handle to the Windows DIB.
Visual Basic | ![]() |
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Public Sub ToDibExample() Dim codecs As RasterCodecs = New RasterCodecs() Dim dib As IntPtr Using image As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")) dib = image.ToDib(RasterConvertToDibType.BitmapInfoHeader) End Using Using image As RasterImage = RasterImage.FromDib(dib) codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Image1_FromDib.bmp"), RasterImageFormat.Bmp, 0) End Using Marshal.FreeHGlobal(dib) codecs.Dispose() End Sub Public NotInheritable Class LEAD_VARS Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" End Class |
C# | ![]() |
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public void ToDibExample() { RasterCodecs codecs = new RasterCodecs(); IntPtr dib; using (RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"))) { dib = image.ToDib(RasterConvertToDibType.BitmapInfoHeader); } using(RasterImage image = RasterImage.FromDib(dib)) { codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Image1_FromDib.bmp"), RasterImageFormat.Bmp, 0); } Marshal.FreeHGlobal(dib); codecs.Dispose(); } static class LEAD_VARS { public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; } |
SilverlightCSharp | ![]() |
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SilverlightVB | ![]() |
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When this method is completed, there are two copies of the image in memory: the DIB and the original RasterImage. Freeing one will not affect the other.
This methods allocates a DIB bitmap and copies the RasterImage to the DIB.
NOTE: This method returns the data in an unmanaged buffer. The caller is repsonsible for freeing the DIB's IntPtr when it is no longer needed. You can use Marshal.FreeHGlobal.
A DIB consists of one of the following:
- a BITMAPFILEHEADER
- a BITMAPV4HEADER(introduced in Windows 95 and Windows NT 4.0)
- or a BITMAPV5HEADER (introduced in Windows 2000 and Windows 98)
followed by a color table and then the bitmap data. The resulting DIB type is determined by the value of the type parameter.
The orientation of the image and color order will depend on how the image was loaded into the RasterImage.
When you no longer need the DIB, you can free it using the Windows GlobalFree function or System.Runtime.InteropServices.Marshal.FreeHGlobal(System.IntPtr).
For more information on DDBs and DIBs, refer to Introduction: DIBs, DDBs, and the Clipboard.
This function does not support signed images.
Target Platforms: Silverlight, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only), Windows Phone 7