You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
236 lines
6.4 KiB
236 lines
6.4 KiB
//========================================================================
|
|
//
|
|
// GetRegistryInfo.CPP
|
|
//
|
|
// DirectDraw/Direct3D driver information grabber
|
|
// (c) Copyright 1998 Microsoft Corp.
|
|
// Written by Michael Lyons ([email protected])
|
|
//
|
|
// Registry access functions, for querying device stuff from the
|
|
// registry
|
|
//
|
|
// Function names that begin with an underscore are internal only!
|
|
//
|
|
//========================================================================
|
|
|
|
|
|
#include "ddrawpr.h"
|
|
|
|
//#include "GetDriverInfo.h"
|
|
//#include "GetDriverInfoInt.h"
|
|
|
|
//========================================================================
|
|
// local functions
|
|
//========================================================================
|
|
BOOL _FindDevice(int iDevice, LPCSTR szDeviceClass, LPCSTR szDeviceClassNot, LPSTR szHardwareKey, BOOL bIgnoreProblems);
|
|
static BOOL _GetDeviceValue(LPCSTR szHardwareKey, LPCSTR szKey, LPCSTR szValue, BYTE* buf, DWORD cbbuf);
|
|
extern char *_strstr(char *s1, char *s2);
|
|
|
|
//========================================================================
|
|
//
|
|
// GetDeviceValue
|
|
//
|
|
// read a value from the HW or SW of a PnP device
|
|
//
|
|
// in:
|
|
// szHardwareKey the hardware key
|
|
// szKey the sub-key
|
|
// szValue the value to query
|
|
// cbbuf the size of the output buffer
|
|
//
|
|
// out:
|
|
// buf the destination buffer
|
|
//
|
|
// returns:
|
|
// success status
|
|
//
|
|
//========================================================================
|
|
static BOOL _GetDeviceValue(LPCSTR szHardwareKey, LPCSTR szKey, LPCSTR szValue, BYTE* buf, DWORD cbbuf)
|
|
{
|
|
HKEY hkeyHW;
|
|
HKEY hkeySW;
|
|
BOOL f = FALSE;
|
|
DWORD cb;
|
|
char szSoftwareKey[MAX_DDDEVICEID_STRING];
|
|
|
|
//
|
|
// open the HW key
|
|
//
|
|
if (RegOpenKey(HKEY_LOCAL_MACHINE, szHardwareKey, &hkeyHW) == ERROR_SUCCESS)
|
|
{
|
|
//
|
|
// try to read the value from the HW key
|
|
//
|
|
*buf = 0;
|
|
cb = cbbuf;
|
|
if (RegQueryValueEx(hkeyHW, szValue, NULL, NULL, buf, &cb) == ERROR_SUCCESS)
|
|
{
|
|
f = TRUE;
|
|
}
|
|
else
|
|
{
|
|
//
|
|
// now try the SW key
|
|
//
|
|
static char szSW[] = "System\\CurrentControlSet\\Services\\Class\\";
|
|
|
|
lstrcpy(szSoftwareKey, szSW);
|
|
cb = sizeof(szSoftwareKey) - sizeof(szSW);
|
|
RegQueryValueEx(hkeyHW, "Driver", NULL, NULL, (BYTE *)&szSoftwareKey[sizeof(szSW) - 1], &cb);
|
|
|
|
if (szKey)
|
|
{
|
|
lstrcat(szSoftwareKey, "\\");
|
|
lstrcat(szSoftwareKey, szKey);
|
|
}
|
|
|
|
if (RegOpenKey(HKEY_LOCAL_MACHINE, szSoftwareKey, &hkeySW) == ERROR_SUCCESS)
|
|
{
|
|
*buf = 0;
|
|
cb = cbbuf;
|
|
if (RegQueryValueEx(hkeySW, szValue, NULL, NULL, buf, &cb) == ERROR_SUCCESS)
|
|
{
|
|
f = TRUE;
|
|
}
|
|
|
|
RegCloseKey(hkeySW);
|
|
}
|
|
}
|
|
|
|
RegCloseKey(hkeyHW);
|
|
}
|
|
|
|
return f;
|
|
}
|
|
|
|
|
|
|
|
//========================================================================
|
|
//
|
|
// FindDevice
|
|
//
|
|
// enum the started PnP devices looking for a device of a particular class
|
|
//
|
|
// iDevice what device to return (0= first device, 1=second et)
|
|
// szDeviceClass what class device (ie "Display") NULL will match all
|
|
// szDeviceID buffer to return the hardware ID (MAX_DDDEVICEID_STRING bytes)
|
|
//
|
|
// return TRUE if a device was found.
|
|
//
|
|
// example:
|
|
//
|
|
// for (int i=0; FindDevice(i, "Display", DeviceID); i++)
|
|
// {
|
|
// }
|
|
//
|
|
//========================================================================
|
|
BOOL _FindDevice(int iDevice, LPCSTR szDeviceClass, LPCSTR szDeviceClassNot, LPSTR szHardwareKey, BOOL bIgnoreProblems)
|
|
{
|
|
HKEY hkeyPnP;
|
|
HKEY hkey;
|
|
DWORD n;
|
|
DWORD cb;
|
|
DWORD dw;
|
|
char ach[MAX_DDDEVICEID_STRING];
|
|
|
|
if (RegOpenKey(HKEY_DYN_DATA, "Config Manager\\Enum", &hkeyPnP) != ERROR_SUCCESS)
|
|
return FALSE;
|
|
|
|
for (n=0; RegEnumKey(hkeyPnP, n, ach, sizeof(ach)) == 0; n++)
|
|
{
|
|
static char szHW[] = "Enum\\";
|
|
|
|
if (RegOpenKey(hkeyPnP, ach, &hkey) != ERROR_SUCCESS)
|
|
continue;
|
|
|
|
lstrcpy(szHardwareKey, szHW);
|
|
cb = MAX_DDDEVICEID_STRING - sizeof(szHW);
|
|
RegQueryValueEx(hkey, "HardwareKey", NULL, NULL, (BYTE*)szHardwareKey + sizeof(szHW) - 1, &cb);
|
|
|
|
dw = 0;
|
|
cb = sizeof(dw);
|
|
RegQueryValueEx(hkey, "Problem", NULL, NULL, (BYTE*)&dw, &cb);
|
|
RegCloseKey(hkey);
|
|
|
|
if ((!bIgnoreProblems) && (dw != 0)) // if this device has a problem skip it
|
|
continue;
|
|
|
|
if (szDeviceClass || szDeviceClassNot)
|
|
{
|
|
_GetDeviceValue(szHardwareKey, NULL, "Class", (BYTE *)ach, sizeof(ach));
|
|
|
|
if (szDeviceClass && lstrcmpi(szDeviceClass, ach) != 0)
|
|
continue;
|
|
|
|
if (szDeviceClassNot && lstrcmpi(szDeviceClassNot, ach) == 0)
|
|
continue;
|
|
}
|
|
|
|
//
|
|
// we found a device, make sure it is the one the caller wants
|
|
//
|
|
if (iDevice-- == 0)
|
|
{
|
|
RegCloseKey(hkeyPnP);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
RegCloseKey(hkeyPnP);
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
//========================================================================
|
|
//
|
|
// _GetDriverInfoFromRegistry
|
|
//
|
|
// This function goes through the registry and tries to fill in
|
|
// information about a driver given a class and maybe a vendor ID
|
|
//
|
|
// in:
|
|
// szClass the class name (i.e., "Display")
|
|
// szVendor the vendor name (i.e., "VEN_121A" for 3Dfx" or NULL
|
|
// if any vendor of the class will do
|
|
//
|
|
// out:
|
|
// pDI pointer to a DDDRIVERINFOEX structure to be filled in
|
|
//
|
|
// returns:
|
|
// success status
|
|
//
|
|
//========================================================================
|
|
HRESULT _GetDriverInfoFromRegistry(char *szClass,
|
|
char *szClassNot,
|
|
char *szVendor,
|
|
D3DADAPTER_IDENTIFIER8* pDI,
|
|
char *szDeviceID)
|
|
{
|
|
char szDevice[MAX_DDDEVICEID_STRING];
|
|
int i;
|
|
|
|
szDeviceID[0]=0;
|
|
pDI->Description[0]=0;
|
|
|
|
|
|
for (i=0 ; ; i++)
|
|
{
|
|
if (!_FindDevice(i, szClass, szClassNot, szDevice, FALSE))
|
|
break;
|
|
|
|
if ((szVendor == NULL) || (_strstr(szDevice, szVendor)))
|
|
{
|
|
//
|
|
// skip the first 5 characters "Enum\"
|
|
//
|
|
strcpy(szDeviceID, &szDevice[5]);
|
|
_GetDeviceValue((LPCSTR)szDevice, NULL, "DeviceDesc", (BYTE *)pDI->Description, sizeof(pDI->Description));
|
|
//_GetDeviceValue((LPCSTR)szDevice, NULL, "Mfg", (BYTE *)pDI->szManufacturer, sizeof(pDI->szManufacturer));
|
|
//_GetDeviceValue((LPCSTR)szDevice, "DEFAULT","drv", (BYTE *)pDI->szGDIDriver, sizeof(pDI->szGDIDriver));
|
|
|
|
return S_OK;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|