| 1 | /*
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| 2 | * Undocumented functions from COMCTL32.DLL
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| 3 | *
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| 4 | * Copyright (C) 1999 Achim Hasenmueller
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| 5 | *
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| 6 | * Based on the work of the WINE group (www.winehq.com)
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| 7 | *
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| 8 | *
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| 9 | * Project Odin Software License can be found in LICENSE.TXT
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| 10 | *
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| 11 | */
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| 12 |
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| 13 | #include "comctl32.h"
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| 14 |
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| 15 | extern HANDLE COMCTL32_hHeap; /* handle to the private heap */
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| 16 |
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| 17 |
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| 18 | /**************************************************************************
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| 19 | * Alloc [COMCTL32.71]
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| 20 | *
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| 21 | * Allocates memory block from the dll's private heap
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| 22 | *
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| 23 | * PARAMS
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| 24 | * dwSize [I] size of the allocated memory block
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| 25 | *
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| 26 | * RETURNS
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| 27 | * Success: pointer to allocated memory block
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| 28 | * Failure: NULL
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| 29 | */
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| 30 |
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| 31 |
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| 32 | LPVOID WINAPI COMCTL32_Alloc (DWORD dwSize)
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| 33 | {
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| 34 | LPVOID lpPtr;
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| 35 |
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| 36 | lpPtr = HeapAlloc (COMCTL32_hHeap, HEAP_ZERO_MEMORY, dwSize);
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| 37 |
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| 38 | return lpPtr;
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| 39 | }
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| 40 |
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| 41 |
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| 42 | /**************************************************************************
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| 43 | * ReAlloc [COMCTL32.72]
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| 44 | *
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| 45 | * Changes the size of an allocated memory block or allocates a memory
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| 46 | * block using the dll's private heap.
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| 47 | *
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| 48 | * PARAMS
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| 49 | * lpSrc [I] pointer to memory block which will be resized
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| 50 | * dwSize [I] new size of the memory block.
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| 51 | *
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| 52 | * RETURNS
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| 53 | * Success: pointer to the resized memory block
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| 54 | * Failure: NULL
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| 55 | *
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| 56 | * NOTES
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| 57 | * If lpSrc is a NULL-pointer, then COMCTL32_ReAlloc allocates a memory
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| 58 | * block like COMCTL32_Alloc.
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| 59 | */
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| 60 |
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| 61 | LPVOID WINAPI COMCTL32_ReAlloc (LPVOID lpSrc, DWORD dwSize)
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| 62 | {
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| 63 | LPVOID lpDest;
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| 64 |
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| 65 | if (lpSrc)
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| 66 | lpDest = HeapReAlloc (COMCTL32_hHeap, HEAP_ZERO_MEMORY, lpSrc, dwSize);
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| 67 | else
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| 68 | lpDest = HeapAlloc (COMCTL32_hHeap, HEAP_ZERO_MEMORY, dwSize);
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| 69 |
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| 70 | return lpDest;
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| 71 | }
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| 72 |
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| 73 |
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| 74 | /**************************************************************************
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| 75 | * Free [COMCTL32.73]
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| 76 | *
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| 77 | * Frees an allocated memory block from the dll's private heap.
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| 78 | *
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| 79 | * PARAMS
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| 80 | * lpMem [I] pointer to memory block which will be freed
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| 81 | *
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| 82 | * RETURNS
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| 83 | * Success: TRUE
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| 84 | * Failure: FALSE
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| 85 | */
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| 86 |
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| 87 | BOOL WINAPI COMCTL32_Free (LPVOID lpMem)
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| 88 | {
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| 89 | return HeapFree (COMCTL32_hHeap, 0, lpMem);
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| 90 | }
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| 91 |
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| 92 |
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| 93 | /**************************************************************************
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| 94 | * GetSize [COMCTL32.74]
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| 95 | *
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| 96 | * Retrieves the size of the specified memory block from the dll's
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| 97 | * private heap.
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| 98 | *
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| 99 | * PARAMS
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| 100 | * lpMem [I] pointer to an allocated memory block
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| 101 | *
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| 102 | * RETURNS
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| 103 | * Success: size of the specified memory block
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| 104 | * Failure: 0
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| 105 | */
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| 106 |
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| 107 | DWORD WINAPI COMCTL32_GetSize (LPVOID lpMem)
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| 108 | {
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| 109 |
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| 110 | return HeapSize (COMCTL32_hHeap, 0, lpMem);
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| 111 | }
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