PFNDPACOMPARECONST function pointer
Defines the prototype for the compare function used by DPA_Sort or DPA_Search when the items being compared are constant objects.
Syntax
typedef int ( CALLBACK *PFNDPACOMPARECONST)( _In_opt_ const void *p1, _In_opt_ const void *p2, _In_ LPARAM lParam );
Parameters
- p1 [in, optional]
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Type: const void*
A pointer to the first item in the comparison.
- p2 [in, optional]
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Type: const void*
A pointer to the second item in the comparison.
- lParam [in]
-
Type: LPARAM
Additional data passed to pfnCmp or pfnCmp.
Return value
Type: int
The meaning of the return values depends on the function that uses this callback prototype. The return values for DPA_Sort are as follows.
| less than 0 | If p1 should be sorted ahead of p2. |
| equal to 0 | If p1 and p2 should be sorted together. |
| greater than 0 | If p1 should be sorted after p2. |
The return values for DPA_Search are as follows.
| less than 0 | If p1 should be found ahead of p2. |
| equal to zero | If p1 and p2 should be found together. |
| greater than 0 | If p1 should be found after p2. |
Requirements
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Minimum supported client | Windows Vista [desktop apps only] |
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Minimum supported server | Windows Server 2008 [desktop apps only] |
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Header |
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See also
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Build date: 10/27/2012
