CheckPointer (Windows CE 5.0)
This macro determines if a given pointer is NULL. If the pointer is NULL, CheckPointer returns a user-defined value.
CheckPointer(p,ret);
Parameters
- p
Pointer to check. - ret
Value your function will return if p is NULL.
Remarks
The following examples shows how to call this macro.
HRESULT OneFunction(VOID *pSomeParameter)
{
CheckPointer(pSomeParameter, E_INVALIDARG)
}
BOOL AnotherFunction(VOID *pSomeParameter)
{
CheckPointer(pSomeParameter, FALSE)
}
Requirements
DirectShow applications and DirectShow filters have different include file and link library requirements.
For more information, see Setting Up the Build Environment.
Pocket PC: Windows Mobile 5.0 and later
Smartphone: Windows Mobile 5.0 and later
OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
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