449 lines
8.2 KiB
C
449 lines
8.2 KiB
C
#include "Quickres.h"
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#include "tchar.h"
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extern HINSTANCE hInstApp;
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extern LPQRMONITORINFO pMonitors;
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extern INT iMonitors;
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extern WORD QuickResFlags;
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extern WORD FreqMenuLocation;
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#ifdef SAVEFLAGS
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// CreateQuickResKey( )
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// Create 'Quickres' key in the registry if it doesnt exist
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BOOL CreateQuickResKey( )
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{
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HKEY hKeyOpen; // key we try to open
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HKEY hKeyCreate; // key to create: Quickres
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DWORD RegReturn; // for reg APIs
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DWORD Disposition;
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INT i; // counter
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BOOL bRet = FALSE; // return value
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// Get the key which the QuickRes key will go under
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if( (RegReturn = RegOpenKeyEx(HKEY_CURRENT_USER, REGSTR_SOFTWARE, 0, KEY_CREATE_SUB_KEY, &hKeyOpen)) == ERROR_SUCCESS )
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{
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// Create my quickres key
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if (RegReturn=RegCreateKeyEx(hKeyOpen, QUICKRES_KEY, 0, 0, REG_OPTION_NON_VOLATILE, KEY_SET_VALUE, NULL, &hKeyCreate, &Disposition) == ERROR_SUCCESS)
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{
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bRet = TRUE;
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}
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RegCloseKey(hKeyOpen);
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}
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return bRet;
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}
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// ReadRegistryValue( LPTSTR, PDWORD, PVOID, PDWORD)
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// Read a quickres value from the registry (either modes, flags or BPP)
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BOOL ReadRegistryValue( LPTSTR ValueName, PDWORD KeyType, PVOID Value, PDWORD RegKeySize )
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{
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HKEY hKeyOpen; // Reg Key with mode flags
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LONG RegReturn; // ret value for reg APIs
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BOOL ret=FALSE; // return value
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// Try to open the quickres key
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if( (RegReturn=RegOpenKeyEx(HKEY_CURRENT_USER, REGSTR_QUICKRES, 0, KEY_QUERY_VALUE, &hKeyOpen)) == ERROR_SUCCESS )
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{
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// Try to get the value
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if ( (RegReturn=RegQueryValueEx(hKeyOpen, ValueName, NULL, KeyType, (LPBYTE)Value, RegKeySize)) == ERROR_SUCCESS )
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{
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ret = TRUE;
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}
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RegCloseKey(hKeyOpen);
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}
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else
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{
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CreateQuickResKey();
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}
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return ret;
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}
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// SetRegistryValue( UINT, UINT, PVOID, UINT )
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// Set requested value (modes, flags, or BPP) in the registry
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VOID SetRegistryValue(LPTSTR ValueName, UINT ValueType, PVOID Value, UINT size)
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{
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HKEY hKeyOpen; // Quickres key
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LONG RegReturn; // reg APIs return value
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// try to open QuickRes key
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if( (RegReturn=RegOpenKeyEx(HKEY_CURRENT_USER, REGSTR_QUICKRES, 0, KEY_WRITE, &hKeyOpen)) == ERROR_SUCCESS )
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{
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// Set the value under that key
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RegSetValueEx( hKeyOpen, ValueName, 0, ValueType, (LPBYTE)Value, size );
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RegCloseKey(hKeyOpen);
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}
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}
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#endif // SAVEFLAGS
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// SetDevmodeFlags( INT, BOOL )
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// Upload value in ModeFlags, and current BPP to registry
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VOID SetDevmodeFlags( INT iDisplay, BOOL ClearAll )
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{
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#ifdef SAVEFLAGS
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PBYTE ModeFlags;
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INT i;
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TCHAR RegModes[16] = REGDEVMODES;
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// Alloc Modes/4 bytes so each mode has 2 bits
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ModeFlags = LocalAlloc ( LPTR, (pMonitors[iDisplay].iModes+3) >> 2 );
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if (ClearAll)
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{
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// Clear out all Mode flags if requested
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// need to set current mode as the only valid one
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for ( i=0; i < pMonitors[iDisplay].iModes; i++)
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{
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VALIDMODE(&pMonitors[iDisplay].pModes[i]) = MODE_UNTESTED;
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}
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}
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// Pack valid mode flags into ModeFlags[]
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for ( i=0; i < pMonitors[iDisplay].iModes; i++)
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{
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ModeFlags[i>>2] |= (VALIDMODE(&pMonitors[iDisplay].pModes[i]) << ((i%4)<<1) );
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}
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// Store modeflags in the registry
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if (iDisplay)
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{
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TCHAR buff[4];
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_itot(iDisplay, buff, 4);
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lstrcat(RegModes, buff);
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}
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SetRegistryValue(RegModes, REG_BINARY,
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ModeFlags, (pMonitors[iDisplay].iModes+3) >> 2 );
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LocalFree ( ModeFlags );
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#endif
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}
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// GetDevmodeFlags( )
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// Read value from registry into global variable ModeFlags
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VOID GetDevmodeFlags( INT iDisplay )
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{
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INT i;
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#ifdef SAVEFLAGS
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PBYTE ModeFlags;
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DWORD KeyType;
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DWORD SavedBPP;
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DWORD RegKeySize = (pMonitors[iDisplay].iModes+3) >> 2 ;
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BOOL bClear=FALSE;
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TCHAR RegModes[16] = REGDEVMODES;
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ModeFlags = LocalAlloc ( LPTR, RegKeySize );
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// Try to read value
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if (iDisplay)
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{
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TCHAR buff[4];
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_itot(iDisplay, buff, 4);
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lstrcat(RegModes, buff);
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}
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if ( ReadRegistryValue(RegModes, &KeyType,
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ModeFlags, &RegKeySize) )
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{
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// Changing BPP on the fly IS allowed on NT 4.0 - NOT on Win95
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// NT ONLY : 'Good' modes are still good even if they are different BPP
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// fShowFreqs is essentially the NT vs Win95 flag.
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if (!fShowFreqs)
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{
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// Make sure user hasnt changed BPP via the desktop applet
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RegKeySize = sizeof( DWORD );
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if (ReadRegistryValue(REGBPP, &KeyType,
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&SavedBPP, &RegKeySize))
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{
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// If BPP HAS changed, modeflags is now bogus.
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// clear the flags. Tell the user.
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DEVMODE dm;
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GetCurrentDevMode(iDisplay, &dm);
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if ( SavedBPP != BPP(&dm) )
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{
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bClear=TRUE;
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MsgBox(IDS_CHANGEDBPP, SavedBPP, MB_OK|MB_ICONEXCLAMATION);
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}
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}
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}
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}
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else
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{
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// Couldnt read value from registry.
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// Assume no modes work; clear the flags
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bClear = TRUE;
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}
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if (bClear)
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{
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SetDevmodeFlags( iDisplay, TRUE );
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}
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else
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{
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// Unpack ModeFlags into a field in each devmode
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// 2 bits per devmode - shift right, and with %11
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for (i=0; i < pMonitors[iDisplay].iModes; i++ )
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{
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VALIDMODE(&pMonitors[iDisplay].pModes[i]) = ((ModeFlags[i>>2]) >> ((i%4)<<1)) & 0x03;
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}
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}
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LocalFree ( ModeFlags );
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#else
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// Not reading from the registry - assign all as untested
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for (i=0; i < pMonitors[iDisplay].iModes; i++ )
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{
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VALIDMODE(&pMonitors[iDisplay].pModes[i]) = MODE_UNTESTED;
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}
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#endif
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}
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// SetQuickResFlags( )
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// Upload QuickResFlags value to registry
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VOID SetQuickResFlags( )
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{
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#ifdef SAVEFLAGS
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DWORD BothFlags = (FreqMenuLocation << (8*sizeof(WORD))) | QuickResFlags;
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SetRegistryValue(REGFLAGS, REG_DWORD,
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&BothFlags, sizeof(DWORD));
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#endif
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}
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// GetQuickResFlags( )
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// Read value from registry into global QuickResFlags
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VOID GetQuickResFlags( )
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{
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#ifdef SAVEFLAGS
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DWORD KeyType;
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DWORD RegKeySize=sizeof(DWORD);
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DWORD BothFlags;
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// Try to read value
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if (!ReadRegistryValue(REGFLAGS, &KeyType,
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&BothFlags, &RegKeySize) )
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{
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// assume a flag value, and create it.
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QuickResFlags = QF_SHOWRESTART | QF_REMMODES;
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FreqMenuLocation= IDD_SUBMENUS;
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SetQuickResFlags();
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#ifdef DONTPANIC
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MsgBox(IDS_DONTPANIC, KEEP_RES_TIMEOUT, MB_OK | MB_ICONEXCLAMATION );
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#endif
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}
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else
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{
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if ( !( FreqMenuLocation = (WORD)(BothFlags >> (8*sizeof(WORD))) ) )
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FreqMenuLocation = IDD_SUBMENUS;
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QuickResFlags = (WORD)(0xFFFF & BothFlags);
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}
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// Do this always!
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QuickResFlags |= QF_HIDE_4BPP;
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#else
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#ifdef DONTPANIC
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MsgBox(IDS_DONTPANIC, KEEP_RES_TIMEOUT, MB_OK | MB_ICONEXCLAMATION );
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#endif
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QuickResFlags = QF_SHOWRESTART | QF_REMMODES | QF_HIDE_4BPP;
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#endif
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}
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// SaveAllSettings( )
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// Write QuickResFlags, devmode flags, and BPP to the registry
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VOID SaveAllSettings()
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{
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SetQuickResFlags( );
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if (fRememberModes)
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{
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INT iDisplay;
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for (iDisplay = 0; iDisplay < iMonitors; iDisplay++)
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{
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SetDevmodeFlags( iDisplay, FALSE );
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}
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}
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SetRegistryValue(REGBPP, REG_DWORD,
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&( BPP(&pMonitors[0].pCurrentdm->dm) ), sizeof(DWORD) );
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// bugbug : only pays attention to monitor 0 (is this still necessary?)
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}
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