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| BOOL WINAPI ExpandBuffer(
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LPVOIDlpvInputBuffer, |
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DWORD cbInputBuffer |
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LPVOIDlpvOutputBuffer, |
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LPDWORD lpcbOutputBuffer |
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The ExpandBuffer function expands the contents of the
previously compressed buffer.
Parameters
- lpvInputBuffer
- A pointer to the buffer which contains the compressed
data.
- cbInputBuffer
- The number of bytes in the input buffer. This value must be
greater than zero.
- lpvOutputBuffer
- A pointer to the buffer which will contain the expanded data.
This parameter may be NULL, which can be used to determine the size
of the of the resulting expanded data prior to allocating memory
for it.
- lpcbOutputBuffer
- A pointer to the number of bytes that may be copied into the
output buffer. If the lpvOutputBuffer parameter is not NULL,
this must be initialized to a non-zero value. When the function
returns, the actual number of bytes of expanded data is returned in
this parameter.
Return Value
A non-zero value is returned if the data was successfully
expanded. A zero value indicates that the data could not be
expanded. Failure typically indicates that the compressed data was
not in a recognized format.
Remarks
The compressed data buffer passed to the ExpandBuffer
function must have been compressed by either the
CompressBuffer or CompressFile functions. Data read
from files that were compressed using third-party utilities such as
WinZip will not be recognized by this function.
Example
cbOutputBuffer = 0;
bResult = ExpandBuffer(lpInputBuffer,
cbInputBuffer,
NULL,
&cbOutputBuffer);
if (bResult)
{
lpOutputBuffer = (LPBYTE)LocalAlloc(LPTR, cbOutputBuffer);
bResult = ExpandBuffer(lpInputBuffer,
cbInputBuffer,
lpOutputBuffer,
&cbOutputBuffer);
}
Requirements
Client: Requires Windows 7, Windows Vista or Windows
XP.
Server: Requires Windows Server 2008 or Windows Server
2003.
Header: Include cstools7.h.
Library: Use csncdav7.lib.
Unicode: Implemented as Unicode and ANSI versions.
See Also
CompressBuffer, CompressFile, DecodeFile, EncodeFile, ExpandFile
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