Source code of Windows XP (NT5)
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//===========================================================================
// DICPUTIL.CPP
//
// DirectInput CPL helper functions.
//
// Functions:
// DIUtilGetJoystickTypeName()
// DIUtilPollJoystick()
//
//===========================================================================
//===========================================================================
// (C) Copyright 1997 Microsoft Corp. All rights reserved.
//
// You have a royalty-free right to use, modify, reproduce and
// distribute the Sample Files (and/or any modified version) in
// any way you find useful, provided that you agree that
// Microsoft has no warranty obligations or liability for any
// Sample Application Files which are modified.
//===========================================================================
#include "cplsvr1.h"
#include "dicputil.h"
#include <shlwapi.h> // for Str... functions!
#include <malloc.h> // for _alloca
extern HWND ghDlg;
extern CDIGameCntrlPropSheet_X *pdiCpl;
extern HINSTANCE ghInst;
extern CRITICAL_SECTION gcritsect;
//===========================================================================
// DIUtilPollJoystick
//
// Polls the joystick device and returns the device state.
//
// Parameters:
// LPDIRECTINPUTDEVICE2 pdiDevice2 - ptr to device object
// DIJOYSTATE *pdijs - ptr to store joystick state
//
// Returns: HRESULT
//
//===========================================================================
HRESULT DIUtilPollJoystick(LPDIRECTINPUTDEVICE2 pdiDevice2, LPDIJOYSTATE pdijs)
{
// clear the pdijs memory
// this way, if we fail, we return no data
pdijs->lX = pdijs->lY = pdijs->lZ = pdijs->lRx = pdijs->lRy = pdijs->lRz = pdijs->rglSlider[0] = pdijs->rglSlider[1] = 0;
// poll the joystick
HRESULT hRes;
if( SUCCEEDED(hRes = pdiDevice2->Poll()) )
{
static BOOL bFirstPoll = TRUE;
// This is to disreguard the first poll!
// DINPUT sends garbage the first poll.
if( bFirstPoll )
{
pdiDevice2->GetDeviceState(sizeof(DIJOYSTATE), pdijs);
bFirstPoll = FALSE;
}
// query the device state
if( FAILED(hRes = pdiDevice2->GetDeviceState(sizeof(DIJOYSTATE), pdijs)) )
{
if( hRes == DIERR_INPUTLOST )
{
if( SUCCEEDED(hRes = pdiDevice2->Acquire()) )
hRes = pdiDevice2->GetDeviceState(sizeof(DIJOYSTATE), pdijs);
}
}
}
// done
return(hRes);
} // *** end DIUtilPollJoystick()
//===========================================================================
// InitDInput
//
// Initializes DirectInput objects
//
// Parameters:
// HWND hWnd - handle of caller's window
// CDIGameCntrlPropSheet_X *pdiCpl - pointer to Game Controllers property
// sheet object
//
// Returns: HRESULT
//
//===========================================================================
HRESULT InitDInput(HWND hWnd, CDIGameCntrlPropSheet_X *pdiCpl)
{
HRESULT hRes = S_OK;
LPDIRECTINPUTDEVICE2 pdiDevice2;
LPDIRECTINPUTJOYCONFIG pdiJoyCfg;
LPDIRECTINPUT pdi = 0;
// protect ourselves from multithreading problems
EnterCriticalSection(&gcritsect);
// validate pdiCpl
if( (IsBadReadPtr((void*)pdiCpl, sizeof(CDIGameCntrlPropSheet_X))) ||
(IsBadWritePtr((void*)pdiCpl, sizeof(CDIGameCntrlPropSheet_X))) )
{
#ifdef _DEBUG
OutputDebugString(TEXT("GCDEF.DLL: InitDInput() - bogus pointer\n"));
#endif
hRes = E_POINTER;
goto exitinit;
}
// retrieve the current device object
pdiCpl->GetDevice(&pdiDevice2);
// retrieve the current joyconfig object
pdiCpl->GetJoyConfig(&pdiJoyCfg);
// have we already initialized DirectInput?
if( (NULL == pdiDevice2) || (NULL == pdiJoyCfg) )
{
// no, create a base DirectInput object
if( FAILED(hRes = DirectInputCreate(ghInst, DIRECTINPUT_VERSION, &pdi, NULL)) )
{
#ifdef _DEBUG
OutputDebugString(TEXT("GCDEF.DLL: DirectInputCreate() failed\n"));
#endif
goto exitinit;
}
// have we already created a joyconfig object?
if( NULL == pdiJoyCfg )
{
// no, create a joyconfig object
if( SUCCEEDED(pdi->QueryInterface(IID_IDirectInputJoyConfig, (LPVOID*)&pdiJoyCfg)) )
{
if( SUCCEEDED(pdiJoyCfg->SetCooperativeLevel(hWnd, DISCL_EXCLUSIVE | DISCL_BACKGROUND)) )
pdiCpl->SetJoyConfig(pdiJoyCfg);
} else
{
#ifdef _DEBUG
OutputDebugString(TEXT("GCDEF.DLL: Unable to create joyconfig\n"));
#endif
goto exitinit;
}
}
// have we already created a device object?
if( NULL == pdiDevice2 )
{
// no, create a device object
if( NULL != pdiJoyCfg )
{
LPDIRECTINPUTDEVICE pdiDevTemp;
LPDIJOYCONFIG_DX5 lpDIJoyConfig = (LPDIJOYCONFIG_DX5)_alloca(sizeof(DIJOYCONFIG_DX5));
ASSERT (lpDIJoyConfig);
// get the type name
ZeroMemory(lpDIJoyConfig, sizeof(DIJOYCONFIG_DX5));
// GetConfig will provide this information
lpDIJoyConfig->dwSize = sizeof(DIJOYCONFIG_DX5);
// Get the instance necessarey for CreateDevice
if( SUCCEEDED(hRes = pdiJoyCfg->GetConfig(pdiCpl->GetID(), (LPDIJOYCONFIG)lpDIJoyConfig, DIJC_GUIDINSTANCE)) )
{
// Create the device
if( SUCCEEDED(hRes = pdi->CreateDevice(lpDIJoyConfig->guidInstance, &pdiDevTemp, NULL)) )
{
// Query the device for the Device2 interface!
if( SUCCEEDED(hRes = pdiDevTemp->QueryInterface(IID_IDirectInputDevice2, (LPVOID*)&pdiDevice2)) )
{
// release the temporary object
pdiDevTemp->Release();
// Set the DataFormat and CooperativeLevel!
if( SUCCEEDED(hRes = pdiDevice2->SetDataFormat(&c_dfDIJoystick)) )
hRes = pdiDevice2->SetCooperativeLevel(hWnd, DISCL_EXCLUSIVE | DISCL_BACKGROUND);
}
}
}
if( SUCCEEDED(hRes) )
{
// store the device object
pdiCpl->SetDevice(pdiDevice2);
} else
{
goto exitinit;
}
} else goto exitinit;
}
} else {
goto exitinit;
}
// if everything is Zero, either you've never enumerated or the enumeration is suspectable
if( (pdiCpl->GetStateFlags()->nButtons == 0) &&
(pdiCpl->GetStateFlags()->nAxis == 0) &&
(pdiCpl->GetStateFlags()->nPOVs == 0) )
{
EnumDeviceObjects(pdiDevice2, pdiCpl->GetStateFlags());
/*
if (FAILED(pdiDevice2->EnumObjects((LPDIENUMDEVICEOBJECTSCALLBACK)DIEnumDeviceObjectsProc, (LPVOID *)pdiCpl->GetStateFlags(), DIDFT_ALL)))
{
#ifdef _DEBUG
OutputDebugString(TEXT("GCDEF.DLL: TEST.CPP: WM_INIT: EnumObjects FAILED!\n"));
#endif
}
*/
}
exitinit:
// release the base DirectInput object
if( pdi ) {
pdi->Release();
}
// we're done
LeaveCriticalSection(&gcritsect);
return(hRes);
} //*** end InitDInput()
void OnHelp(LPARAM lParam)
{
assert ( lParam );
short nSize = STR_LEN_32;
// point to help file
LPTSTR pszHelpFileName = (LPTSTR) _alloca(sizeof(TCHAR[STR_LEN_32]));
assert (pszHelpFileName);
// returns help file name and size of string
GetHelpFileName(pszHelpFileName, &nSize);
if( ((LPHELPINFO)lParam)->iContextType == HELPINFO_WINDOW )
WinHelp((HWND)((LPHELPINFO)lParam)->hItemHandle, pszHelpFileName, (UINT)HELP_WM_HELP, (ULONG_PTR)gaHelpIDs);
}
BOOL GetHelpFileName(TCHAR *lpszHelpFileName, short* nSize)
{
if( LoadString(ghInst, IDS_HELPFILENAME, lpszHelpFileName, *nSize) )
return(S_OK);
else
return(E_FAIL);
}
////////////////////////////////////////////////////////////////////////////////////////
// OnContextMenu(WPARAM wParam)
////////////////////////////////////////////////////////////////////////////////////////
void OnContextMenu(WPARAM wParam)
{
short nSize = STR_LEN_32;
// point to help file
LPTSTR pszHelpFileName = (LPTSTR) _alloca(sizeof(TCHAR[STR_LEN_32]));
assert (pszHelpFileName);
// returns help file name and size of string
GetHelpFileName(pszHelpFileName, &nSize);
WinHelp((HWND)wParam, pszHelpFileName, HELP_CONTEXTMENU, (ULONG_PTR)gaHelpIDs);
}
// Instead of enumerating via EnumObjects
void EnumDeviceObjects(LPDIRECTINPUTDEVICE2 pdiDevice2, STATEFLAGS *pStateFlags)
{
LPDIDEVICEOBJECTINSTANCE_DX3 pDevObjInst = (LPDIDEVICEOBJECTINSTANCE_DX3) _alloca(sizeof(DIDEVICEOBJECTINSTANCE_DX3));
assert (pDevObjInst);
pDevObjInst->dwSize = sizeof(DIDEVICEOBJECTINSTANCE_DX3);
const DWORD dwOffsetArray[] = {DIJOFS_X, DIJOFS_Y, DIJOFS_Z, DIJOFS_RX, DIJOFS_RY, DIJOFS_RZ, DIJOFS_SLIDER(0), DIJOFS_SLIDER(1)};
// -1 is for 0 based dwOffsetArray!
BYTE n = MAX_AXIS;
do
{
if( SUCCEEDED(pdiDevice2->GetObjectInfo((LPDIDEVICEOBJECTINSTANCE)pDevObjInst, dwOffsetArray[--n], DIPH_BYOFFSET)) )
pStateFlags->nAxis |= (HAS_X<<n);
} while( n );
n = MAX_BUTTONS;
do
{
if( SUCCEEDED(pdiDevice2->GetObjectInfo((LPDIDEVICEOBJECTINSTANCE)pDevObjInst, DIJOFS_BUTTON(--n), DIPH_BYOFFSET)) )
pStateFlags->nButtons |= (HAS_BUTTON1<<n);
} while( n );
n = MAX_POVS;
do
{
if( SUCCEEDED(pdiDevice2->GetObjectInfo((LPDIDEVICEOBJECTINSTANCE)pDevObjInst, DIJOFS_POV(--n), DIPH_BYOFFSET)) )
pStateFlags->nPOVs |= (HAS_POV1<<n);
} while( n );
}
#define GETRANGE( n ) \
pDIPropCal->lMin = lpMyRanges->jpMin.dw##n##; \
pDIPropCal->lCenter = lpMyRanges->jpCenter.dw##n##; \
pDIPropCal->lMax = lpMyRanges->jpMax.dw##n##; \
void SetMyRanges(LPDIRECTINPUTDEVICE2 lpdiDevice2, LPMYJOYRANGE lpMyRanges, BYTE nAxis)
{
LPDIPROPCAL pDIPropCal = (LPDIPROPCAL)_alloca(sizeof(DIPROPCAL));
assert (pDIPropCal);
pDIPropCal->diph.dwSize = sizeof(DIPROPCAL);
pDIPropCal->diph.dwHeaderSize = sizeof(DIPROPHEADER);
pDIPropCal->diph.dwHow = DIPH_BYOFFSET;
const DWORD dwOffsetArray[] = {DIJOFS_X, DIJOFS_Y, DIJOFS_Z, DIJOFS_RX, DIJOFS_RY, DIJOFS_RZ, DIJOFS_SLIDER(0), DIJOFS_SLIDER(1)};
BYTE n = 0;
// You have to start with a "while" here because Reset to Default may not have Any Axis!!!
while( nAxis )
{
if( nAxis & HAS_X )
{
GETRANGE(X);
} else if( nAxis & HAS_Y )
{
GETRANGE(Y);
n = 1;
} else if( nAxis & HAS_Z )
{
GETRANGE(Z)
n = 2;
} else if( nAxis & HAS_RX )
{
GETRANGE(Rx);
n = 3;
} else if( nAxis & HAS_RY )
{
GETRANGE(Ry);
n = 4;
} else if( nAxis & HAS_RZ )
{
GETRANGE(Rz);
n = 5;
} else if( nAxis & HAS_SLIDER0 )
{
GETRANGE(S0);
n = 6;
} else if( nAxis & HAS_SLIDER1 )
{
GETRANGE(S1);
n = 7;
}
pDIPropCal->diph.dwObj = dwOffsetArray[n];
VERIFY(SUCCEEDED(lpdiDevice2->SetProperty(DIPROP_CALIBRATION, &pDIPropCal->diph)));
nAxis &= ~HAS_X<<n;
}
}
// Removed 'till we calibrate POVs again!
void SetMyPOVRanges(LPDIRECTINPUTDEVICE2 pdiDevice2)
{
DIPROPCALPOV *pDIPropCal = new (DIPROPCALPOV);
assert (pDIPropCal);
ZeroMemory(pDIPropCal, sizeof(*pDIPropCal));
pDIPropCal->diph.dwSize = sizeof(*pDIPropCal);
pDIPropCal->diph.dwHeaderSize = sizeof(DIPROPHEADER);
pDIPropCal->diph.dwHow = DIPH_BYID;
pDIPropCal->diph.dwObj = DIDFT_POV;
memcpy( pDIPropCal->lMin, myPOV[POV_MIN], sizeof(pDIPropCal->lMin) );
memcpy( pDIPropCal->lMax, myPOV[POV_MAX], sizeof(pDIPropCal->lMax) );
if( FAILED(pdiDevice2->SetProperty(DIPROP_CALIBRATION, &pDIPropCal->diph)) )
{
#if (defined(_DEBUG) || defined(DEBUG))
OutputDebugString(TEXT("GCDEF.DLL: SetMyRanges: SetProperty failed to set POV!\n"));
#endif
}
if( pDIPropCal ) {
delete (pDIPropCal);
}
}
void SetTitle( HWND hDlg )
{
// Set the title bar!
LPDIRECTINPUTDEVICE2 pdiDevice2;
pdiCpl->GetDevice(&pdiDevice2);
DIPROPSTRING *pDIPropStr = new (DIPROPSTRING);
ASSERT (pDIPropStr);
ZeroMemory(pDIPropStr, sizeof(DIPROPSTRING));
pDIPropStr->diph.dwSize = sizeof(DIPROPSTRING);
pDIPropStr->diph.dwHeaderSize = sizeof(DIPROPHEADER);
pDIPropStr->diph.dwHow = DIPH_DEVICE;
if( SUCCEEDED(pdiDevice2->GetProperty(DIPROP_INSTANCENAME, &pDIPropStr->diph)) )
{
TCHAR tszFormat[STR_LEN_64];
#ifndef _UNICODE
CHAR szOut[STR_LEN_128];
#endif
LPWSTR lpwszTitle = new (WCHAR[STR_LEN_128]);
ASSERT (lpwszTitle);
// Shorten length, provide elipse,
if( wcslen(pDIPropStr->wsz) > 32 )
{
pDIPropStr->wsz[30] = pDIPropStr->wsz[31] = pDIPropStr->wsz[32] = L'.';
pDIPropStr->wsz[33] = L'\0';
}
LoadString(ghInst, IDS_SHEETCAPTION, tszFormat, sizeof(tszFormat)/sizeof(tszFormat[0]));
#ifdef _UNICODE
wsprintfW(lpwszTitle, tszFormat, pDIPropStr->wsz);
#else
USES_CONVERSION;
wsprintfA(szOut, tszFormat, W2A(pDIPropStr->wsz));
StrCpyW(lpwszTitle, A2W(szOut));
#endif
//SetWindowText(GetParent(hDlg),
::SendMessage(GetParent(hDlg), WM_SETTEXT, 0, (LPARAM)(LPCTSTR)
#ifdef _UNICODE
lpwszTitle);
#else
W2A(lpwszTitle));
#endif
if( lpwszTitle )
delete[] (lpwszTitle);
}
#ifdef _DEBUG
else OutputDebugString(TEXT("GCDEF.DLL: DICPUTIL.CPP: SetTitle: GetProperty Failed!\n"));
#endif
if( pDIPropStr )
delete (pDIPropStr);
}
BOOL Error(HWND hWnd, short nTitleID, short nMsgID)
{
LPTSTR lptTitle = new TCHAR[STR_LEN_64];
ASSERT (lptTitle);
BOOL bRet = FALSE;
if( LoadString(ghInst, nTitleID, lptTitle, STR_LEN_64) )
{
LPTSTR lptMsg = (LPTSTR)_alloca(sizeof(TCHAR[STR_LEN_128]));
ASSERT (lptMsg);
if( LoadString(ghInst, nMsgID, lptMsg, STR_LEN_128) )
{
MessageBox(hWnd, lptMsg, lptTitle, MB_ICONHAND | MB_OK);
bRet = TRUE;
}
}
if( lptTitle )
delete[] (lptTitle);
return(bRet);
}
void CenterDialog(HWND hWnd)
{
RECT rc;
HWND hParentWnd = GetParent(hWnd);
GetWindowRect(hParentWnd, &rc);
// Centre the Dialog!
SetWindowPos(hParentWnd, NULL,
(GetSystemMetrics(SM_CXSCREEN) - (rc.right-rc.left))>>1,
(GetSystemMetrics(SM_CYSCREEN) - (rc.bottom-rc.top))>>1,
NULL, NULL, SWP_NOSIZE | SWP_NOZORDER | SWP_SHOWWINDOW);
}
#define SETRANGE( n ) \
lpMyRanges->jpMin.dw##n## = pDIPropRange->lMin; \
lpMyRanges->jpCenter.dw##n## = pDIPropRange->lCenter; \
lpMyRanges->jpMax.dw##n## = pDIPropRange->lMax; \
//===========================================================================
// BOOL GetMyRanges( LPMYJOYRANGE lpMyRanges, LPDIRECTINPUTDEVICE2 pdiDevice2, BYTE nAxis)
//
// Parameters:
// LPMYJOYRANGE lpMyRanges - Structure to fill with ranges
// LPDIRECTINPUTDEVICE2 pdiDevice2 - Device in which axis ranges are requested
// BYTE nAxis - Bit mask of axis ranges to retrieve
//
// Returns: FALSE if failed
//
//===========================================================================
void GetMyRanges(LPDIRECTINPUTDEVICE2 lpdiDevice2, LPMYJOYRANGE lpMyRanges, BYTE nAxis)
{
// Use DIPROPCAL to retrieve Range Information
// Don't use DIPROPRANGE, as it doesn't have Center!
LPDIPROPCAL pDIPropRange = (LPDIPROPCAL)_alloca(sizeof(DIPROPCAL));
assert(pDIPropRange);
pDIPropRange->diph.dwSize = sizeof(DIPROPCAL);
pDIPropRange->diph.dwHeaderSize = sizeof(DIPROPHEADER);
pDIPropRange->diph.dwHow = DIPH_BYOFFSET;
const DWORD dwOffsetArray[] = {DIJOFS_X, DIJOFS_Y, DIJOFS_Z, DIJOFS_RX, DIJOFS_RY, DIJOFS_RZ, DIJOFS_SLIDER(0), DIJOFS_SLIDER(1)};
BYTE nIndex = 0;
// Zero out the buffer members and the index!
pDIPropRange->lMin = pDIPropRange->lCenter = pDIPropRange->lMax = 0;
// You don't have to start with "while" here because Reset to Default does not call this function!!1
do
{
if( nAxis & HAS_X )
{
pDIPropRange->diph.dwObj = dwOffsetArray[nIndex = 0];
if( SUCCEEDED(lpdiDevice2->GetProperty(DIPROP_CALIBRATION, &pDIPropRange->diph)) )
{
SETRANGE(X);
}
} else if( nAxis & HAS_Y )
{
pDIPropRange->diph.dwObj = dwOffsetArray[nIndex = 1];
if( SUCCEEDED(lpdiDevice2->GetProperty(DIPROP_CALIBRATION, &pDIPropRange->diph)) )
{
SETRANGE(Y);
}
} else if( nAxis & HAS_Z )
{
pDIPropRange->diph.dwObj = dwOffsetArray[nIndex = 2];
if( SUCCEEDED(lpdiDevice2->GetProperty(DIPROP_CALIBRATION, &pDIPropRange->diph)) )
{
SETRANGE(Z);
}
} else if( nAxis & HAS_RX )
{
pDIPropRange->diph.dwObj = dwOffsetArray[nIndex = 3];
if( SUCCEEDED(lpdiDevice2->GetProperty(DIPROP_CALIBRATION, &pDIPropRange->diph)) )
{
SETRANGE(Rx);
}
} else if( nAxis & HAS_RY )
{
pDIPropRange->diph.dwObj = dwOffsetArray[nIndex = 4];
if( SUCCEEDED(lpdiDevice2->GetProperty(DIPROP_CALIBRATION, &pDIPropRange->diph)) )
{
SETRANGE(Ry);
}
} else if( nAxis & HAS_RZ )
{
pDIPropRange->diph.dwObj = dwOffsetArray[nIndex = 5];
if( SUCCEEDED(lpdiDevice2->GetProperty(DIPROP_CALIBRATION, &pDIPropRange->diph)) )
{
SETRANGE(Rz);
}
} else if( nAxis & HAS_SLIDER0 )
{
pDIPropRange->diph.dwObj = dwOffsetArray[nIndex = 6];
if( SUCCEEDED(lpdiDevice2->GetProperty(DIPROP_CALIBRATION, &pDIPropRange->diph)) )
{
SETRANGE(S0);
}
} else if( nAxis & HAS_SLIDER1 )
{
pDIPropRange->diph.dwObj = dwOffsetArray[nIndex = 7];
if( SUCCEEDED(lpdiDevice2->GetProperty(DIPROP_CALIBRATION, &pDIPropRange->diph)) )
{
SETRANGE(S1);
}
} else {
break;
}
} while( nAxis &= ~HAS_X<<nIndex );
}
void PostDlgItemEnableWindow(HWND hDlg, USHORT nItem, BOOL bEnabled)
{
HWND hCtrl = GetDlgItem(hDlg, nItem);
if( hCtrl )
PostEnableWindow(hCtrl, bEnabled);
}
void PostEnableWindow(HWND hCtrl, BOOL bEnabled)
{
DWORD dwStyle = GetWindowLong(hCtrl, GWL_STYLE);
// No point Redrawing the Window if there's no change!
if( bEnabled )
{
if( dwStyle & WS_DISABLED )
dwStyle &= ~WS_DISABLED;
else return;
} else
{
if( !(dwStyle & WS_DISABLED) )
dwStyle |= WS_DISABLED;
else return;
}
SetWindowLongPtr(hCtrl, GWL_STYLE, (LONG_PTR)dwStyle);
RedrawWindow(hCtrl, NULL, NULL, RDW_INTERNALPAINT | RDW_INVALIDATE);
}
void CopyRange( LPJOYRANGE lpjr, LPMYJOYRANGE lpmyjr )
{
memcpy( &lpjr->jpMin, &lpmyjr->jpMin, sizeof(JOYPOS) );
memcpy( &lpjr->jpCenter, &lpmyjr->jpCenter, sizeof(JOYPOS) );
memcpy( &lpjr->jpMax, &lpmyjr->jpMax, sizeof(JOYPOS) );
}