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/* (C) Copyright Microsoft Corporation 1991-1994. All Rights Reserved */#include <windows.h>
#include <windowsx.h>
#include <mmsystem.h>
#include <regstr.h>
#include "reg.h"
const TCHAR szRegPath[] = REGSTR_PATH_WINDOWSAPPLETS TEXT("\\Sound Recorder");
/* ReadRegistryData
* * Reads information from the registry * * Parameters: * * pEntryNode - The node under Media Player which should be opened * for this data. If this is NULL, the value is * written directly under szRegPath. * * pEntryName - The name of the value under pEntryNode to be retrieved. * * pType - Pointer to a buffer to receive type of data read. May be NULL. * * pData - Pointer to a buffer to receive the value data. * * Size - Size, in bytes, of the buffer pointed to by pData. * * Return: * * Registry status return (NO_ERROR is good) * * * Andrew Bell (andrewbe) wrote it, 10 September 1992 * */DWORD ReadRegistryData( LPTSTR pEntryNode, LPTSTR pEntryName, PDWORD pType, LPBYTE pData, DWORD DataSize ){ DWORD Status; HKEY hkeyRegPath; HKEY hkeyEntryNode; DWORD Size;
Status = RegOpenKeyEx( HKEY_CURRENT_USER, szRegPath, 0, KEY_READ, &hkeyRegPath );
if( Status == NO_ERROR ) { /* Open the sub-node:
*/ if( pEntryNode ) Status = RegOpenKeyEx( hkeyRegPath, pEntryNode, 0, KEY_READ, &hkeyEntryNode ); else hkeyEntryNode = hkeyRegPath;
if( Status == NO_ERROR ) { Size = DataSize;
/* Read the entry from the registry:
*/ Status = RegQueryValueEx( hkeyEntryNode, pEntryName, 0, pType, pData, &Size );
if( pEntryNode ) RegCloseKey( hkeyEntryNode ); }
RegCloseKey( hkeyRegPath ); } return Status;}
DWORD QueryRegistryDataSize( LPTSTR pEntryNode, LPTSTR pEntryName, DWORD *pDataSize ){ DWORD Status; HKEY hkeyRegPath; HKEY hkeyEntryNode; DWORD Size;
/* Open the top-level node. For Media Player this is:
* "Software\\Microsoft\\Windows NT\\CurrentVersion\\Sound Recorder" */ Status = RegOpenKeyEx( HKEY_CURRENT_USER, szRegPath, 0, KEY_READ, &hkeyRegPath );
if( Status == NO_ERROR ) { /* Open the sub-node:
*/ if( pEntryNode ) Status = RegOpenKeyEx( hkeyRegPath, pEntryNode, 0, KEY_READ, &hkeyEntryNode ); else hkeyEntryNode = hkeyRegPath;
if( Status == NO_ERROR ) { /* Read the entry from the registry:
*/ Status = RegQueryValueEx( hkeyEntryNode, pEntryName, 0, NULL, NULL, &Size ); if (Status == NO_ERROR) *pDataSize = Size;
if( pEntryNode ) RegCloseKey( hkeyEntryNode ); }
RegCloseKey( hkeyRegPath ); } return Status;}
/* WriteRegistryData
* * Writes a bunch of information to the registry * * Parameters: * * pEntryNode - The node under szRegPath which should be created * or opened for this data. If this is NULL, the value is * written directly under szRegPath. * * pEntryName - The name of the value under pEntryNode to be set. * * Type - Type of data to read (e.g. REG_SZ). * * pData - Pointer to the value data to be written. If this is NULL, * the value under pEntryNode is deleted. * * Size - Size, in bytes, of the buffer pointed to by pData. * * * This routine is fairly generic, apart from the name of the top-level node. * * The data are stored in the following registry tree: * * HKEY_CURRENT_USER * � * �� Software * � * �� Microsoft * � * �� Windows NT * � * �� CurrentVersion * � * �� Media Player * � * �� AVIVideo * � * �� DisplayPosition * � * �� SysIni * * * Return: * * Registry status return (NO_ERROR is good) * * * Andrew Bell (andrewbe) wrote it, 10 September 1992 * */DWORD WriteRegistryData( LPTSTR pEntryNode, LPTSTR pEntryName, DWORD Type, LPBYTE pData, DWORD Size ){ DWORD Status; HKEY hkeyRegPath; HKEY hkeyEntryNode;
/* Open or create the top-level node. For Media Player this is:
* "Software\\Microsoft\\Windows NT\\CurrentVersion\\Media Player" */ Status = RegCreateKeyEx( HKEY_CURRENT_USER, szRegPath, 0, NULL, 0, KEY_WRITE, NULL, &hkeyRegPath, NULL );
if( Status == NO_ERROR ) { /* Open or create the sub-node.
*/ if( pEntryNode ) Status = RegCreateKeyEx( hkeyRegPath, pEntryNode, 0, NULL, 0, KEY_WRITE, NULL, &hkeyEntryNode, NULL ); else hkeyEntryNode = hkeyRegPath;
if( Status == NO_ERROR ) { if( pData ) { Status = RegSetValueEx( hkeyEntryNode, pEntryName, 0, Type, pData, Size );
} else { Status = RegDeleteValue( hkeyEntryNode, pEntryName ); }
if( pEntryNode ) RegCloseKey( hkeyEntryNode ); }
RegCloseKey( hkeyRegPath ); }
return Status;}
/*
* Save/Restore window position */BOOL SoundRec_GetSetRegistryRect( HWND hwnd, int Get){ const TCHAR aszXPos[] = TEXT("X"); const TCHAR aszYPos[] = TEXT("Y"); RECT rcWnd,rc; if (!GetWindowRect(hwnd, &rcWnd)) return FALSE;
switch (Get) { case SGSRR_GET: if (ReadRegistryData((LPTSTR)NULL , (LPTSTR)aszXPos , NULL , (LPBYTE)&rc.left , sizeof(rc.left)) != NO_ERROR) { break; } if (ReadRegistryData((LPTSTR)NULL , (LPTSTR)aszYPos , NULL , (LPBYTE)&rc.top , sizeof(rc.top)) != NO_ERROR) { break; } //
// Restore window position
//
MoveWindow(hwnd , rc.left , rc.top , rcWnd.right - rcWnd.left , rcWnd.bottom - rcWnd.top , FALSE ); return TRUE; case SGSRR_SET: //
// don't save iconic or hidden window states
//
if (IsIconic(hwnd) || !IsWindowVisible(hwnd)) break;
if (WriteRegistryData((LPTSTR)NULL , (LPTSTR)aszXPos , REG_DWORD , (LPBYTE)&rcWnd.left , sizeof(rcWnd.left)) != NO_ERROR) { break; } if (WriteRegistryData((LPTSTR)NULL , (LPTSTR)aszYPos , REG_DWORD , (LPBYTE)&rcWnd.top , sizeof(rcWnd.top)) != NO_ERROR) { break; } return TRUE; default: break; } return FALSE;}
/*
* * */const TCHAR szAudioRegPath[] = REGSTR_PATH_MULTIMEDIA_AUDIO;const TCHAR szWaveFormats[] = REGSTR_PATH_MULTIMEDIA_AUDIO TEXT("\\WaveFormats");const TCHAR szDefaultFormat[] = TEXT("DefaultFormat");
/*
* BOOL SoundRec_SetDefaultFormat * * Write the DefaultFormat friendly name into the registry. Under DAYTONA * we don't have a UI to set DefaultFormat, so this is a way of setting * it from an application. * * Under Chicago, the Audio page in MMCPL manages this information. * */BOOL SoundRec_SetDefaultFormat( LPTSTR lpFormat){ DWORD cbFormat; DWORD Status; HKEY hkeyRegPath;
cbFormat = (lstrlen(lpFormat) + 1) * sizeof(TCHAR);
//
// Don't store NULL.
//
if (cbFormat <= sizeof(TCHAR) ) return FALSE; Status = RegOpenKeyEx( HKEY_CURRENT_USER, szAudioRegPath, 0, KEY_WRITE, &hkeyRegPath ); if (Status != NO_ERROR) return FALSE;
//
// Get the format tag string
//
Status = RegSetValueEx( hkeyRegPath, szDefaultFormat, 0, REG_SZ, (CONST BYTE*)lpFormat, cbFormat ); return (Status == NO_ERROR);}
/* IsValidWFX
* * Validate the wfx in case it was corrupted. * * */BOOL IsValidWFX( LPWAVEFORMATEX lpwfx, DWORD cbwfx){
if (cbwfx < sizeof(WAVEFORMAT)) return FALSE; if (lpwfx->nChannels == 0) return FALSE;
if (lpwfx->nSamplesPerSec == 0) return FALSE;
if (lpwfx->nAvgBytesPerSec == 0) return FALSE; if (lpwfx->nBlockAlign == 0) return FALSE; if (lpwfx->wFormatTag == WAVE_FORMAT_PCM) return TRUE;
if (cbwfx < (sizeof(WAVEFORMATEX) + lpwfx->cbSize)) return FALSE;
return TRUE;}
/*
* BOOL SoundRec_GetDefaultFormat * * Default format is stored in a public area of the registry. * * */BOOL SoundRec_GetDefaultFormat( LPWAVEFORMATEX *ppwfx, DWORD *pcbwfx){ DWORD Status; HKEY hkeyRegPath; HKEY hkeyFmtPath; LPTSTR lpsz; DWORD cbsz; DWORD cbwfx = 0; LPWAVEFORMATEX lpwfx = NULL;
//
// Null out params
//
*ppwfx = NULL; *pcbwfx = 0; Status = RegOpenKeyEx( HKEY_CURRENT_USER, szAudioRegPath, 0, KEY_READ, &hkeyRegPath ); if (Status != NO_ERROR) return FALSE;
//
// Get the format tag string
//
Status = RegQueryValueEx( hkeyRegPath, szDefaultFormat, 0, NULL, NULL, &cbsz );
if (Status != NO_ERROR) return FALSE; lpsz = (LPTSTR)GlobalAllocPtr(GHND, cbsz); if (!lpsz) return FALSE; Status = RegQueryValueEx( hkeyRegPath, szDefaultFormat, 0, NULL, (LPBYTE)lpsz, &cbsz ); if (Status == NO_ERROR) { //
// Get the format
//
Status = RegOpenKeyEx( HKEY_CURRENT_USER, szWaveFormats, 0, KEY_READ, &hkeyFmtPath );
if (Status == NO_ERROR) { Status = RegQueryValueEx( hkeyFmtPath, lpsz, 0, NULL, NULL, &cbwfx ); //
// Make sure the structure is at minimum a WAVEFORMAT in size
//
if ((Status == NO_ERROR) && (cbwfx >= sizeof(WAVEFORMAT))) { lpwfx = (LPWAVEFORMATEX)GlobalAllocPtr(GHND, cbwfx); if (lpwfx) { Status = RegQueryValueEx( hkeyFmtPath, lpsz, 0, NULL, (LPBYTE)lpwfx, &cbwfx ); } } RegCloseKey(hkeyFmtPath); } }
RegCloseKey(hkeyRegPath); GlobalFreePtr(lpsz);
//
// Sanity Check.
//
if (lpwfx) { if (Status == NO_ERROR && IsValidWFX(lpwfx, cbwfx)) { cbwfx = sizeof(WAVEFORMATEX) + ((lpwfx->wFormatTag == WAVE_FORMAT_PCM)?0:lpwfx->cbSize); *pcbwfx = cbwfx; *ppwfx = lpwfx; return TRUE; } else { GlobalFreePtr(lpwfx); return FALSE; } } return FALSE;}
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