Anteckning
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The ICGetStateSize macro queries a video compression driver to determine the amount of memory required to retrieve the configuration information. You can use this macro or explicitly call the ICM_GETSTATE message.
Syntax
DWORD ICGetStateSize(
hic
);
Parameters
hic
Handle of the compressor.
Return value
Type: DWORD
Returns the amount of memory, in bytes, required by the state information.
Remarks
The structure used to represent configuration information is driver specific and is defined by the driver.
Use ICGetStateSize before calling the ICGetState macro to determine the size of buffer to allocate for the call.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | vfw.h |