Microsoft DirectX 8.1 (C++)

IDirectInput8::CreateDevice

Creates and initializes an instance of a device based on a given GUID, and obtains an IDirectInputDevice8 interface.

HRESULT CreateDevice(
  REFGUID rguid,                               
  LPDIRECTINPUTDEVICE *lplpDirectInputDevice,  
  LPUNKNOWN pUnkOuter                          
);

Parameters

rguid

Reference to (C++) or address of (C) the instance GUID for the desired input device (see Remarks). The GUID is retrieved through the IDirectInput8::EnumDevices method, or it can be one of the following predefined GUIDs:

GUID_SysKeyboard

The default system keyboard.

GUID_SysMouse

The default system mouse.

For the preceding GUID values to be valid, your application must define INITGUID before all other preprocessor directives at the beginning of the source file, or link to Dxguid.lib.

lplpDirectInputDevice

Address of a variable to receive the IDirectInputDevice8 interface pointer if successful.

pUnkOuter

Address of the controlling object's IUnknown interface for COM aggregation, or NULL if the interface is not aggregated. Most callers pass NULL.

Return Values

If the method succeeds, the return value is DI_OK.

If the method fails, the return value can be one of the following:

DIERR_DEVICENOTREG

DIERR_INVALIDPARAM

DIERR_NOINTERFACE

DIERR_NOTINITIALIZED

DIERR_OUTOFMEMORY

Remarks

Calling this method with pUnkOuter = NULL is equivalent to creating the object by CoCreateInstance(&CLSID_DirectInputDevice, NULL, CLSCTX_INPROC_SERVER, riid, lplpDirectInputDevice) and then initializing it with Initialize.

Calling this method with pUnkOuter != NULL is equivalent to creating the object by CoCreateInstance(&CLSID_DirectInputDevice, punkOuter, CLSCTX_INPROC_SERVER, &IID_IUnknown, lplpDirectInputDevice). The aggregated object must be initialized manually.

Requirements

  Windows NT/2000/XP: Requires Windows® 2000.
  Windows 98/Me: Requires Windows 98 or later. Available as a redistributable for Windows 98.
  Header: Declared in Dinput.h.