4.3. PcmciaEventCreate()


	Chapter 4. Plug-and-Play and Power Management Functions

Purpose

Convenience function for allocating and initializing a PCMCIA Plug-and-Play and power management event structure.

Prototype

WD_EVENT * DLLCALLCONV PcmciaEventCreate(
  WD_PCMCIA_ID deviceId,
  WD_PCMCIA_SLOT pcmciaSlot,
  DWORD dwOptions,
  DWORD dwAction);

Parameters

Name	Type	Input/Output
deviceId	WD_PCMCIA_ID
• wManufacturerId	WORD	Input
• wCardId	WORD	Input
pcmciaSlot	WD_PCMCIA_SLOT
• uBus	BYTE	Input
• uSocket	BYTE	Input
• uFunction	BYTE	Input
• uPadding	BYTE	N/A
dwOptions	DWORD	Input
dwAction	DWORD	Input

Description

Name	Description
deviceId	PCMCIA card ID information structure:
• w ManufacturerId	PCMCIA Manufacturer ID to register to. If zero, register to all PCMCIA manufacturer IDs.
• wCardId	PCMCIA card ID to register to. If zero, register to all PCMCIA card IDs.
slot	PCMCIA slot information structure:
• uBus	PCMCIA bus number to register to. If zero, register to all PCMCIA buses.
• uSocket	PCMCIA socket to register to. If zero, register to all sockets.
• uFunction	PCMCIA function to register to. If zero, register to all functions.
dwOptions	Can be either zero or: • `WD_ACKNOWLEDGE` — If set, the user can perform actions on the requested event before acknowledging it. The OS waits on the event until the user calls `WD_EventSend`() If `EventRegister`() [4.4] is called, `WD_EventSend`() will be called automatically after the callback function exits.
dwAction	A bit-mask indicating which events to register to: Plug-and-Play events: • `WD_INSERT` — Device was attached and configured by the operating system's Plug-and-Play Manager • `WD_REMOVE` — Device was unconfigured and detached by the operating system's Plug-and-Play Manager Device power state: • `WD_POWER_CHANGED_D0` — Full power • `WD_POWER_CHANGED_D1` — Low sleep • `WD_POWER_CHANGED_D2` — Medium sleep • `WD_POWER_CHANGED_D3` — Full sleep • `WD_POWER_SYSTEM_WORKING` — Fully on Systems power state: • `WD_POWER_SYSTEM_SLEEPING1` — Fully on but sleeping • `WD_POWER_SYSTEM_SLEEPING2` — CPU off, memory on, PCMCIA on • `WD_POWER_SYSTEM_SLEEPING3` — CPU off, memory is in refresh, PCMCIA on aux power • `WD_POWER_SYSTEM_HIBERNATE` — OS saves context before shutdown • `WD_POWER_SYSTEM_SHUTDOWN` — No context saved

Return Value

Returns a new events structure for handling PCMCIA Plug-and-Play and power management events, or NULL if the allocation failed.

Remarks

It is the responsibility of the caller to free the event structure returned by the function (using free()) when it is no longer needed.

Example

PciEventCreate(deviceId, pcmciaSlot, WD_ACKNOWLEDGE, WD_INSERT | WD_REMOVE);


4.2. PciEventCreate()		4.4. EventRegister()