bool FAR PASCAL InitJoystickInput(LPCDIDEVICEINSTANCE pdinst, LPVOID pvRef)
{
LPDIRECTINPUT pdi = pvRef;
LPDIRECTINPUTDEVICE pdev;
HRESULT hr;
char tempstr[255];
// create the DirectInput joystick device
if (pdi->lpVtbl->CreateDevice(pdi, &pdinst->guidInstance, &pdev, NULL) != DI_OK)
{
return DIENUM_CONTINUE;
}
strcpy (tempstr, &pdinst->tszProductName[0]);
JoystickInfo[Num_Joysticks].Name = (char *) malloc ( strlen( tempstr ) + 1 );
strcpy (JoystickInfo[Num_Joysticks].Name, tempstr);
hr = pdev->lpVtbl->QueryInterface( pdev, &IID_IDirectInputDevice2,
(LPVOID *)&lpdiJoystick[Num_Joysticks]);
pdev->lpVtbl->Release(pdev);
if (hr != S_OK)
return DIENUM_CONTINUE;
diJoystickCaps[ Num_Joysticks ].dwSize = sizeof( DIDEVCAPS );
hr = IDirectInputDevice2_GetCapabilities( lpdiJoystick[ Num_Joysticks ], &diJoystickCaps[ Num_Joysticks ] );
if (hr != S_OK)
return DIENUM_CONTINUE;
Num_Joysticks++;
if (Num_Joysticks > MAX_JOYSTICKS)
Num_Joysticks = MAX_JOYSTICKS;
return DIENUM_CONTINUE;
}
/* Function to open a joystick for use.
The joystick to open is specified by the index field of the joystick.
This should fill the nbuttons and naxes fields of the joystick structure.
It returns 0, or -1 if there is an error.
*/
int
SDL_SYS_JoystickOpen(SDL_Joystick * joystick)
{
HRESULT result;
LPDIRECTINPUTDEVICE device;
DIPROPDWORD dipdw;
SDL_memset(&dipdw, 0, sizeof(DIPROPDWORD));
dipdw.diph.dwSize = sizeof(DIPROPDWORD);
dipdw.diph.dwHeaderSize = sizeof(DIPROPHEADER);
/* allocate memory for system specific hardware data */
joystick->hwdata =
(struct joystick_hwdata *) SDL_malloc(sizeof(struct joystick_hwdata));
if (joystick->hwdata == NULL) {
SDL_OutOfMemory();
return (-1);
}
SDL_memset(joystick->hwdata, 0, sizeof(struct joystick_hwdata));
joystick->hwdata->buffered = 1;
joystick->hwdata->Capabilities.dwSize = sizeof(DIDEVCAPS);
result =
IDirectInput_CreateDevice(dinput,
&SYS_Joystick[joystick->index].
guidInstance, &device, NULL);
if (FAILED(result)) {
SetDIerror("IDirectInput::CreateDevice", result);
return (-1);
}
/* Now get the IDirectInputDevice2 interface, instead. */
result = IDirectInputDevice_QueryInterface(device,
&IID_IDirectInputDevice2,
(LPVOID *) & joystick->
hwdata->InputDevice);
/* We are done with this object. Use the stored one from now on. */
IDirectInputDevice_Release(device);
if (FAILED(result)) {
SetDIerror("IDirectInputDevice::QueryInterface", result);
return (-1);
}
/* Aquire shared access. Exclusive access is required for forces,
* though. */
result =
IDirectInputDevice2_SetCooperativeLevel(joystick->hwdata->
InputDevice, SDL_HelperWindow,
DISCL_EXCLUSIVE |
DISCL_BACKGROUND);
if (FAILED(result)) {
SetDIerror("IDirectInputDevice2::SetCooperativeLevel", result);
return (-1);
}
/* Use the extended data structure: DIJOYSTATE2. */
result =
IDirectInputDevice2_SetDataFormat(joystick->hwdata->InputDevice,
&c_dfDIJoystick2);
if (FAILED(result)) {
SetDIerror("IDirectInputDevice2::SetDataFormat", result);
return (-1);
}
/* Get device capabilities */
result =
IDirectInputDevice2_GetCapabilities(joystick->hwdata->InputDevice,
&joystick->hwdata->Capabilities);
if (FAILED(result)) {
SetDIerror("IDirectInputDevice2::GetCapabilities", result);
return (-1);
}
/* Force capable? */
if (joystick->hwdata->Capabilities.dwFlags & DIDC_FORCEFEEDBACK) {
result = IDirectInputDevice2_Acquire(joystick->hwdata->InputDevice);
if (FAILED(result)) {
SetDIerror("IDirectInputDevice2::Acquire", result);
return (-1);
}
/* reset all accuators. */
result =
IDirectInputDevice2_SendForceFeedbackCommand(joystick->hwdata->
InputDevice,
DISFFC_RESET);
/* Not necessarily supported, ignore if not supported.
if (FAILED(result)) {
SetDIerror("IDirectInputDevice2::SendForceFeedbackCommand",
result);
return (-1);
}
*/
result = IDirectInputDevice2_Unacquire(joystick->hwdata->InputDevice);
if (FAILED(result)) {
SetDIerror("IDirectInputDevice2::Unacquire", result);
return (-1);
}
/* Turn on auto-centering for a ForceFeedback device (until told
* otherwise). */
dipdw.diph.dwObj = 0;
dipdw.diph.dwHow = DIPH_DEVICE;
dipdw.dwData = DIPROPAUTOCENTER_ON;
result =
IDirectInputDevice2_SetProperty(joystick->hwdata->InputDevice,
DIPROP_AUTOCENTER, &dipdw.diph);
/* Not necessarily supported, ignore if not supported.
if (FAILED(result)) {
SetDIerror("IDirectInputDevice2::SetProperty", result);
return (-1);
}
*/
}
/* What buttons and axes does it have? */
IDirectInputDevice2_EnumObjects(joystick->hwdata->InputDevice,
EnumDevObjectsCallback, joystick,
DIDFT_BUTTON | DIDFT_AXIS | DIDFT_POV);
dipdw.diph.dwObj = 0;
dipdw.diph.dwHow = DIPH_DEVICE;
dipdw.dwData = INPUT_QSIZE;
/* Set the buffer size */
result =
IDirectInputDevice2_SetProperty(joystick->hwdata->InputDevice,
DIPROP_BUFFERSIZE, &dipdw.diph);
if (result == DI_POLLEDDEVICE) {
/* This device doesn't support buffering, so we're forced
* to use less reliable polling. */
joystick->hwdata->buffered = 0;
} else if (FAILED(result)) {
SetDIerror("IDirectInputDevice2::SetProperty", result);
return (-1);
}
return (0);
}
