Kernel32HeapSize Method

[DllImportAttribute("Kernel32.dll", SetLastError = true)]
public static int HeapSize(
	IntPtr hHeap,
	HeapFlags flags,
	IntPtr mem
)

<DllImportAttribute("Kernel32.dll", SetLastError := true>]
Public Shared Function HeapSize ( 
	hHeap As IntPtr,
	flags As HeapFlags,
	mem As IntPtr
) As Integer

Dim hHeap As IntPtr
Dim flags As HeapFlags
Dim mem As IntPtr

Dim returnValue As Integer

returnValue = Kernel32.HeapSize(hHeap, 
	flags, mem)

public:
[DllImportAttribute(L"Kernel32.dll", SetLastError = true)]
static int HeapSize(
	IntPtr hHeap, 
	HeapFlags flags, 
	IntPtr mem
)

[<DllImportAttribute("Kernel32.dll", SetLastError = true)>]
static member HeapSize : 
        hHeap : IntPtr * 
        flags : HeapFlags * 
        mem : IntPtr -> int 

No code example is currently available or this language may not be supported.

Parameters

hHeap  IntPtr

A handle to the heap in which the memory block resides.

This handle is returned by either the HeapCreate(HeapFlags, UInt32, UInt32) or GetProcessHeap function.

flags  HeapFlags

The heap size options.

Specifying a HeapFlags value overrides the corresponding value specified in the options parameter when the heap was created by using the HeapCreate(HeapFlags, UInt32, UInt32) function.

mem  IntPtr

A pointer to the memory block whose size the function will obtain.

This is a pointer returned by the HeapAlloc(IntPtr, HeapFlags, UInt32) or HeapReAlloc(IntPtr, HeapFlags, IntPtr, UInt32) function.

The memory block must be from the heap specified by the hHeap parameter.

Return Value

If the function fails, the return value is (SIZE_T)-1.

The function does not call SetLastError(Win32ErrorCode). An application cannot call GetLastWin32Error for extended error information.

If the mem parameter refers to a heap allocation that is not in the heap specified by the hHeap parameter, the behavior of the HeapSize(IntPtr, HeapFlags, IntPtr) function is undefined.

Reference