Public Overloads Function GetRowColumnCompressed( _
   ByVal workBuffer As IntPtr, _
   ByVal runBuffer As IntPtr, _
   ByVal row As Integer, _
   ByVal column As Integer, _
   ByVal width As Integer _
) As Integer

Visual Basic (Usage)	Copy Code
Dim instance As RasterImage Dim workBuffer As IntPtr Dim runBuffer As IntPtr Dim row As Integer Dim column As Integer Dim width As Integer Dim value As Integer   value = instance.GetRowColumnCompressed(workBuffer, runBuffer, row, column, width)

public int GetRowColumnCompressed( 
   IntPtr workBuffer,
   IntPtr runBuffer,
   int row,
   int column,
   int width
)

public: int GetRowColumnCompressed( 
   IntPtr workBuffer,
   IntPtr runBuffer,
   int row,
   int column,
   int width
) 

public:
int GetRowColumnCompressed( 
   IntPtr workBuffer,
   IntPtr runBuffer,
   int row,
   int column,
   int width
) 

Parameters

workBuffer

Pointer to optional unmanaged memory work buffer. Allocating the work buffer speeds processing if you call this method more than once, because if you do not allocate a work buffer, the method allocates and frees a temporary buffer each time it is called. The size of this buffer should be the same as the BytesPerLine property. Pass IntPtr.Zero for workBuffer if you do not want to use the work buffer

runBuffer

Pointer to the output unmanaged memory buffer, which will be filled with 1-bit compressed image data. Calculate the required size of this buffer as follows: bytes required = (Width + 3) * 2.

row

The number of the row to retrieve. The first row is 0, and the last row is 1 less than the image height.

column

The column offset within the row to retrieve. The first column offset is 0, and the last column offset is 1 less than the image width.

width

The number of pixels to retrieve.

Return Value

This method is available in the (Document/Medical only).

This method is useful for working with 1-bit images that are loaded in their compressed formats for faster loading and display.

For more information, refer to Speeding Up 1-Bit Documents.

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

Reference