Source code of Windows XP (NT5)
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/**************************************************************************\
* Module Name: settings.hxx
*
* CDeviceSettings class
*
* This class is in charge of all the settings specific to one display
* device. Including Screen Size, Color Depth, Font size.
*
* Copyright (c) Microsoft Corp. 1992-1998 All Rights Reserved
*
\**************************************************************************/
#ifndef SETTINGS_HXX
#define SETTINGS_HXX
#define MAKEXYRES(p,xval,yval) ((p)->x = xval, (p)->y = yval)
#define _CURXRES ((_pCurDevmode != NULL) ? (int)_pCurDevmode->dmPelsWidth : -1)
#define _CURYRES ((_pCurDevmode != NULL) ? (int)_pCurDevmode->dmPelsHeight : -1)
#define _ORGXRES ((_pOrgDevmode != NULL) ? (int)_pOrgDevmode->dmPelsWidth : -1)
#define _ORGYRES ((_pOrgDevmode != NULL) ? (int)_pOrgDevmode->dmPelsHeight : -1)
#define _CURCOLOR ((_pCurDevmode != NULL) ? (int)_pCurDevmode->dmBitsPerPel : -1)
#define _ORGCOLOR ((_pOrgDevmode != NULL) ? (int)_pOrgDevmode->dmBitsPerPel : -1)
#define _CURFREQ ((_pCurDevmode != NULL) ? (int)_pCurDevmode->dmDisplayFrequency : -1)
#define _ORGFREQ ((_pOrgDevmode != NULL) ? (int)_pOrgDevmode->dmDisplayFrequency : -1)
#define MODE_INVALID 0x00000001
#define MODE_RAW 0x00000002
typedef struct _MODEARRAY {
DWORD dwFlags;
LPDEVMODE lpdm;
} MODEARRAY, *PMODEARRAY;
HRESULT CDisplaySettings_CreateInstance(IN IUnknown * punkOuter, IN REFIID riid, OUT LPVOID * ppvObj);
class CDisplaySettings : public IDataObject,
public IDisplaySettings
{
public:
CDisplaySettings();
~CDisplaySettings();
// General Settings support
BOOL InitSettings(LPDISPLAY_DEVICE pDisplay);
int SaveSettings(DWORD dwSet);
int RestoreSettings();
BOOL ConfirmChangeSettings();
BOOL IsKnownSafe();
BOOL bIsModeChanged() {return _pCurDevmode != _pOrgDevmode;}
// Device Settings
void SetPrimary(BOOL fPrimary) { _fPrimary = fPrimary; };
void SetAttached(BOOL fAttached) { _fCurAttached = fAttached; };
BOOL IsPrimary() { return _fPrimary; };
BOOL IsAttached() { return _fCurAttached; };
BOOL IsOrgAttached() { return _fOrgAttached; };
BOOL IsSmallFontNecessary();
BOOL IsRemovable()
{
return ((_pDisplayDevice->StateFlags & DISPLAY_DEVICE_REMOVABLE) != 0);
}
LPDEVMODE GetCurrentDevMode(void);
// Color information
int GetColorList(LPPOINT Res, PLONGLONG *ppColor);
void SetCurColor(int Color) { _BestMatch(NULL, Color, FALSE); }
int GetCurColor() { return _CURCOLOR;}
BOOL IsColorChanged()
{
return (_ORGCOLOR == -1) ? FALSE : (_CURCOLOR != _ORGCOLOR);
}
// Resolution information
int GetResolutionList(int Color, PPOINT *ppRes);
void SetCurResolution(LPPOINT ppt, IN BOOL fAutoSetColorDepth) { _BestMatch(ppt, -1, fAutoSetColorDepth); }
void GetCurResolution(LPPOINT ppt)
{
ppt->x = _CURXRES;
ppt->y = _CURYRES;
}
BOOL IsResolutionChanged()
{
if (_ORGXRES == -1)
return FALSE;
else
return ((_CURXRES != _ORGXRES) && (_CURYRES != _ORGYRES));
}
int GetFrequencyList(int Color, LPPOINT Res, PLONGLONG *ppFreq);
void SetCurFrequency(int Frequency);
int GetCurFrequency() { return _CURFREQ; }
BOOL IsFrequencyChanged()
{
return (_ORGFREQ == -1) ? FALSE : (_CURFREQ != _ORGFREQ);
}
// Position information
void SetCurPosition(LPPOINT ppt) {_ptCurPos = *ppt;}
void SetOrgPosition(LPPOINT ppt) {_ptOrgPos = *ppt;}
void GetCurPosition(PRECT prc)
{
prc->left = _ptCurPos.x;
prc->top = _ptCurPos.y;
prc->right = _ptCurPos.x + _CURXRES;
prc->bottom = _ptCurPos.y + _CURYRES;
}
void GetOrgPosition(PRECT prc)
{
prc->left = _ptOrgPos.x;
prc->top = _ptOrgPos.y;
prc->right = _ptOrgPos.x + _ORGXRES;
prc->bottom = _ptOrgPos.y + _ORGYRES;
}
void GetPreviewPosition(PRECT prc)
{
*prc = _rcPreview;
}
void SetPreviewPosition(PRECT prc)
{
_rcPreview = *prc;
}
// Adapter & Monitor information
BOOL GetMonitorName(LPTSTR pszName, DWORD cchSize);
BOOL GetMonitorDevice(LPTSTR pszDevice);
HRESULT GetDevInstID(LPTSTR lpszDeviceKey, STGMEDIUM *pstgmed);
// *** IUnknown methods
STDMETHODIMP QueryInterface(REFIID riid, PVOID *ppvObj);
STDMETHODIMP_(ULONG) AddRef(void);
STDMETHODIMP_(ULONG) Release(void);
// *** IDataObject methods
STDMETHODIMP GetData(FORMATETC *pfmtetcIn, STGMEDIUM *pstgmed);
STDMETHODIMP GetDataHere(FORMATETC *pfmtetc, STGMEDIUM *pstgpmed);
STDMETHODIMP QueryGetData(FORMATETC *pfmtetc);
STDMETHODIMP GetCanonicalFormatEtc(FORMATETC *pfmtetcIn, FORMATETC *pfmtetcOut);
STDMETHODIMP SetData(FORMATETC *pfmtetc, STGMEDIUM *pstgmed, BOOL bRelease);
STDMETHODIMP EnumFormatEtc(DWORD dwDirection, IEnumFORMATETC **ppienumFormatEtc);
STDMETHODIMP DAdvise(FORMATETC *pfmtetc, DWORD dwAdviseFlags, IAdviseSink * piadvsink, PDWORD pdwConnection);
STDMETHODIMP DUnadvise(DWORD dwConnection);
STDMETHODIMP EnumDAdvise(IEnumSTATDATA **ppienumStatData);
// Helper functions
STDMETHODIMP CopyDataToStorage(STGMEDIUM *pstgmed, LPTSTR pszOut);
// *** IDisplaySettings methods
STDMETHODIMP SetMonitor(DWORD dwMonitor);
STDMETHODIMP GetModeCount(DWORD* pdwCount, BOOL fOnlyPreferredModes);
STDMETHODIMP GetMode(DWORD dwMode, BOOL fOnlyPreferredModes, DWORD* pdwWidth, DWORD* pdwHeight, DWORD* pdwColor);
STDMETHODIMP SetSelectedMode(HWND hwnd, DWORD dwWidth, DWORD dwHeight, DWORD dwColor, BOOL* pfApplied, DWORD dwFlags);
STDMETHODIMP GetSelectedMode(DWORD* pdwWidth, DWORD* pdwHeight, DWORD* pdwColor);
STDMETHODIMP GetAttached(BOOL* pfAttached);
STDMETHODIMP SetPruningMode(BOOL fIsPruningOn);
STDMETHODIMP GetPruningMode(BOOL* pfCanBePruned, BOOL* pfIsPruningReadOnly, BOOL* pfIsPruningOn);
protected:
// The Display Device we are currently working with.
LPDISPLAY_DEVICE _pDisplayDevice;
ULONG _cpdm;
PMODEARRAY _apdm;
// The current system settings
POINT _ptOrgPos;
LPDEVMODE _pOrgDevmode;
BOOL _fOrgAttached;
// The current CPL settings.
POINT _ptCurPos;
LPDEVMODE _pCurDevmode;
BOOL _fCurAttached;
RECT _rcPreview;
// If the current device is attached to the desktop
BOOL _fUsingDefault;
BOOL _fPrimary;
// Pruning
BOOL _bCanBePruned; // true if raw mode list != pruned mode list
BOOL _bIsPruningReadOnly; // true if can be pruned and pruning mode can be written
BOOL _bIsPruningOn; // true if can be pruned and pruning mode is on
HKEY _hPruningRegKey;
// Orientation
BOOL _bFilterOrientation;
DWORD _dwOrientation;
BOOL _bFilterFixedOutput;
DWORD _dwFixedOutput;
// Ref count for IDataObject
LONG _cRef;
// Private functions
void _Dump_CDisplaySettings(BOOL bAll);
void _Dump_CDevmodeList(VOID);
void _Dump_CDevmode(LPDEVMODE pdm);
int _InsertSortedDwords(int val1, int val2, int cval, int **ppval);
BOOL _AddDevMode(LPDEVMODE lpdm);
void _BestMatch(LPPOINT Res, int Color, IN BOOL fAutoSetColorDepth);
BOOL _ExactMatch(LPDEVMODE lpdm, BOOL bForceVisible);
BOOL _PerfectMatch(LPDEVMODE lpdm);
void _SetCurrentValues(LPDEVMODE lpdm);
int _GetCurrentModeFrequencyList(int Color, LPPOINT Res, PLONGLONG *ppFrequency);
BOOL _MarkMode(LPDEVMODE lpdm);
BOOL _IsCurDevmodeRaw();
BOOL _IsModeVisible(int i);
BOOL _IsModePreferred(int i);
static BOOL _IsModeVisible(CDisplaySettings* pSettings, int i);
// OLE support for extensibility.
void _InitClipboardFormats();
void _FilterModes();
void _SetFilterOptions(LPCTSTR pszDeviceName, LPDEVMODEW lpdm);
static LPDEVMODEW _lpfnEnumAllModes(LPVOID pContext, DWORD iMode);
static BOOL _lpfnSetSelectedMode(LPVOID pContext, LPDEVMODEW lpdm);
static LPDEVMODEW _lpfnGetSelectedMode(LPVOID pContext);
static VOID _lpfnSetPruningMode(LPVOID pContext, BOOL bIsPruningOn);
static VOID _lpfnGetPruningMode(LPVOID pContext,
BOOL* pbCanBePruned,
BOOL* pbIsPruningReadOnly,
BOOL* pbIsPruningOn);
private:
HRESULT _GetRegKey(LPDEVMODE pDevmode, int * pnIndex, LPTSTR pszRegKey, DWORD cchSize, LPTSTR pszRegValue, DWORD cchValueSize);
};
#endif // SETTINGS_HXX