SurfaceHeap Class

Other versions of this page are also available for the following:

• Windows Embedded CE 6.0 R3

8/28/2008

The SurfaceHeap class is a heap management class that should be used when the capabilities of the Node2D class do not satisfy the requirements of your driver. It is most useful when your driver is capable of supporting surface types of different bit depths. Your driver is not required to use the SurfaceHeap class. However, Mirosoft recommends that when you develop a new driver or extend DDHAL support in an existing driver, you migrate from Node2D to SurfaceHeap. For a description of the SurfaceHeap class, see SurfaceHeap Class Definition.

The following table shows the methods defined in the SurfaceHeap class.

Method	Description
SurfaceHeap Constructor	Constructor for the SurfaceHeap class.
SurfaceHeap::Address	Retrieves the address of the current heap.
SurfaceHeap::Alloc	Reserves a block of memory from the specified heap.
SurfaceHeap::Available	Determines the amount of nonallocated memory in the current heap.
SurfaceHeap::Free	Releases memory from the current heap.
SurfaceHeap::NodeSize	Retrieves the size, in bytes, of the current heap, excluding subsequent nodes.
SurfaceHeap::Size	Retrieves the total size of the current heap.