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Access Method
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Leadtools Namespace > RasterImage Class : Access Method




Provides exclusive access to the image data contained in this RasterImage.

Syntax

Visual Basic (Declaration) 
Public Sub Access()
Visual Basic (Usage)Copy Code
Dim instance As RasterImage
 
instance.Access()
C# 
public void Access()
Managed Extensions for C++ 
public: void Access();
C++/CLI 
public:
void Access();

Example

For an example, refer to GetRow

Remarks

If the image data of this RasterImage object is stored in a global Windows handle, then use the Access method to lock the memory. If you do not call this method before accessing the data with a low-level method like GetRow or SetRowthe application might fail.

To make the most of available system resources, you should only keep a RasterImage object locked when you need to access the image data. Call Release to unlock the image data for more efficient use of system memory resources.

If the image data of this RasterImage is not stored in a global Windows handle, then this method will do nothing and calling it will not have any affect on the RasterImage.

Use IsGlobalMemory to determine whether the image data of this RasterImage is stored in a global Windows handle.

Requirements

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

See Also