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DDKReg_GetWindowInfo (Compact 2013)

  • Artículo

3/26/2014

This function fills the DDKWINDOWINFO structure with information it reads from the registry. This information includes everything a driver must have to map its memory windows.

Syntax

DWORD WINAPI DDKReg_GetWindowInfo(
  HKEY hk, 
  PDDKWINDOWINFO pwi
);

Parameters

  • hk
    [in] Handle to a registry key.

  • pwi
    [out] Pointer to a DDKWINDOWINFO structure.

    The following table shows the registry values this function retrieves.

    Registry value

    Registry type

    Data structure member

    Default value if the registry value is not present

    BusNumber

    REG_DWORD

    dwBusNumber

    Zero if there is no entry.

    InterfaceType 

    See INTERFACE_TYPE for possible values.

    REG_DWORD

    dwInterfaceType

    InterfaceTypeUndefined

    Number of I/O windows.

    This value is not in the registry.

    dwNumIoWindows

    This value is derived from the number of matching window and size pairs in the IoBase and IoLen registry values, and can be zero (0).

    IoBase and IoLen

    REG_DWORD if a single value, REG_MULTI_SZ if multiple values. String values are represented in hexadecimal in the registry.

    ioWindows

    Undefined. Read dwNumIoWindows before accessing members of this array.

    Number of memory windows.

    This value is not in the registry

    dwNumMemWindows

    This value is derived from the number of matching window and size pairs in the MemBase and MemLen registry values, and can be zero (0).

    MemBase and MemLen

    REG_DWORD if a single value, REG_MULTI_SZ if multiple values. String values are represented in hexadecimal in the registry.

    memWindows

    Undefined. Read dwNumMemWindows before accessing members of this array.

Return Value

The following table shows the return values for this function.

Value

Description

ERROR_SUCCESS

Indicates that the DDKReg_GetWindowInfo successfully populated the DDKWINDOWINFO structure.

ERROR_INVALID_PARAMETER

Indicates a problem with the populated DDKWINDOWINFO structure.

ERROR_INVALID_DATA

Indicates that a registry value had an unexpected type, or that device window address and length lists did not have the same length.

Any other return value

Indicates a return code defined in Winerror.h.

Requirements

Header

ddkreg.h

Library

coredll.lib

See Also

Reference

Registry Helper Functions
DDKWINDOWINFO
INTERFACE_TYPE