ValidateReadPtr macro
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
Verifies that the calling process has read access to a memory block. If not, the macro calls the DbgBreak macro.
Note
This macro is deprecated. In the Windows SDK for Windows Vista (and later) this macro does not do anything.
Syntax
void ValidateReadPtr(
const void *p,
UINT cb
);
Parameters
-
p
-
Pointer to a memory block.
-
cb
-
Size of the memory block, in bytes.
Return value
This macro does not return a value.
Remarks
This macro is ignored unless DEBUG, _DEBUG, or VFWROBUST is defined when the DirectShow base-class header file is included. This macro can have a significant performance cost.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
See also