ResourceRequestEx (Windows Embedded CE 6.0)
1/6/2010
This function allows devices to request exclusive access to shareable resources.
Syntax
BOOL ResourceRequestEx (
DWORD dwResId,
DWORD dwId,
DWORD dwLen,
DWORD dwFlags
);
Parameters
dwResId
[in] Resource identifier, which is a label for a set of numbers. The following table shows the existing resource identifiers and their values, which are defined in Resmgr.h.Resource identifier Value RESMGR_IRQ
0x00001
RESMGR_IOSPACE
0x00002
Although some resource identifiers are for your use, values below RESMGR_BASE_OEM are reserved. Values greater than RESMGR_MAX_OEM are reserved for future use. The following table shows the resource identifiers that you can use and their values, which are defined in Resmgr.h.
Resource identifier Value RESMGR_BASE_OEM
0x00080000
RESMGR_MAX_OEM
0x000FFFFF
- dwId
[in] Identifer of the resource to request exclusive access.
- dwLen
[in] Number of resources to request.
- dwFlags
[in] Set to RREXF_REQUEST_EXCLUSIVE to request exclusive access of the shareable resource.
Return Value
TRUE indicates success. FALSE indicates failure.
You cannot have a partial allocation or a partial release of resources.
Remarks
Some devices are not capable of sharing resources. For example, some network cards need exclusive access to interrupt requests (IRQs) even when the IRQ is shareable. Bus drivers should make this request on behalf of the device drivers they load.
Requirements
| Header | winbase.h |
| Windows Embedded CE | Windows CE 5.0 and later |