70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
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#ifndef __EMPTY_VOLUME_CACHE__
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#define __EMPTY_VOLUME_CACHE__
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#include "utils.h"
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// Define node storing a path read from the registry in a singly-linked list.
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typedef struct _TAG_CACHE_PATH_NODE CACHE_PATH_NODE;
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typedef CACHE_PATH_NODE* LPCACHE_PATH_NODE;
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struct _TAG_CACHE_PATH_NODE
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{
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TCHAR szCachePath[MAX_PATH];
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LPCACHE_PATH_NODE pNext;
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};
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// Define node storing control handles in a singly-linked list.
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typedef struct _TAG_CONTROL_HANDLE_NODE CONTROL_HANDLE_NODE;
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typedef CONTROL_HANDLE_NODE* LPCONTROL_HANDLE_NODE;
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struct _TAG_CONTROL_HANDLE_NODE
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{
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HANDLE hControl;
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LPCONTROL_HANDLE_NODE pNext;
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};
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// Define node storing heads and tails of control handle lists in a
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// singly-linked list.
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// There is a control handle list for each volume.
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typedef struct _TAG_CONTROL_HANDLE_HEADER CONTROL_HANDLE_HEADER;
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typedef CONTROL_HANDLE_HEADER* LPCONTROL_HANDLE_HEADER;
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struct _TAG_CONTROL_HANDLE_HEADER
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{
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DWORD dwSpaceUsed;
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int nDriveNum;
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LPCONTROL_HANDLE_NODE pHandlesHead;
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LPCONTROL_HANDLE_NODE pHandlesTail;
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LPCONTROL_HANDLE_HEADER pNext;
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};
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// Handles to activeX controls are cached in memory during calls to
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// GetSpaceUsed so that re-enumeration is not needed for subsequent
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// calls to Purge.
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//
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// The structure for storing control handles for various volumes is:
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//
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// m_pControlsTail -+
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// |
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// \|/
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// m_pControlsHead --> Header01 --> Header02 --> Header03 --> NULL
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// | | |
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// +- C: +- D: +- E:
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// | | |
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// +- Head01 +- Head02 +- Head03
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// | | |
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// +- Tail01 +- Tail02 +- Tail03
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//
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// where
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// HeaderXX is of type CONTROL_HANDLE_HEADER, and
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// HeadXX and TailXX are of type LPCONTROL_HANDLE_NODE.
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//
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// HeadXX and TailXX are respectively head and tail pointers to a list
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// of handles. Those are handles to controls installed on the drive
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// specified in HeaderXX.
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//
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#endif // __EMPTY_VOLUME_CACHE__
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