CheckPointer
A version of this page is also available for
4/8/2010
This macro determines if a given pointer is NULL. If the pointer is NULL, CheckPointer returns a user-defined value.
Syntax
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
| Windows Embedded CE | Windows CE 2.12 and later |
| Windows Mobile | Pocket PC for Windows Mobile Version 5.0 and later, Smartphone for Windows Mobile Version 5.0 and later |
| Note | Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements For more information, see Setting Up the Build Environment, Version 2.12 requires DXPAK 1.0 or later |