|
|
一直以来都没有用过WMI, 都是用的PDH来获取系统信息.感觉两者很些相似,都是类似于性能数据库,基本的一些什么硬件软件信息都可以比较全面的获得.只是用VC来调用相对比较繁杂,用VB和C#就方便多了.这些天到MSDN上找了些资料,总算大致搞清了一些编程思路.对于那些很想知道怎么获取诸如CPUID,硬盘ID,BIOS信息以及主板信息的人来说应该有些帮助吧.试着用MSDN的例子乱写了一通,以下是通过WMI获取BIOS的例子,不对之处还请指正 ^_^: 3 X1 ^ P3 B! n7 v, u
--------------------------------------------------------------------------------
7 T1 S) k1 u% h( V1 O" x9 @2 p #define _WIN32_DCOM : W& _: W5 A* G4 p/ g9 r
#include <iostream> * o/ Z% K: d1 i, W
using namespace std ;
7 z2 F9 j% J4 c/ H( A. Y/ J #include <windows.h> - ` R7 ]6 T/ q
#include <comdef.h>
( [4 ?6 ?: f/ Z/ @2 I #include <wbemcli.h> . [( Q- T+ ^# }- E6 O5 X) E
% h% m/ ?1 `0 c. q0 ?: L) f* x6 r
#pragma comment(lib, "Wbemuuid") 4 Q$ B9 Z1 n0 J& Z& D4 Y
/ O& m" l i# M' a- d
int main(int argc,char**argv)
( t! `" e: v& e. a {
0 U& G. W9 u8 e0 n. q# T, { HRESULT hres ;
{+ r3 Z+ T! S( G9 Q$ d 2 Z* t5 f! J' m9 T4 w6 i
// Initialize COM. : x" z: Q& R( [
hres=CoInitializeEx(0,COINIT_MULTITHREADED); 4 D/ C5 }7 Z8 F: D
if(FAILED(hres)) ( \8 \( v" A$ Q* Y8 I) ~! u
{
. e. q& y5 o( F cout<<"Failed to initialize COM library. Error code = 0x" 4 B, q$ U; r6 Q7 A+ n7 D
<<hex<<hres<<endl ;
+ k6 y# ]' p- f% G+ c- c return 1 ;
( P! i, J1 y. v! M) Z3 K // Program has failed.
j2 [ `+ h5 `) j: [' ~: o! Y) c }
. B+ ]0 E5 O: W/ C! x% g9 h
" `" g8 U( P$ W // Initialize
+ K- e& x6 n' ] r/ J- \' F2 t+ C hres=CoInitializeSecurity(
+ P$ n3 O* M0 e4 x NULL,-1,NULL,NULL,RPC_C_AUTHN_LEVEL_DEFAULT, 1 b4 i7 _) p+ J5 |
RPC_C_IMP_LEVEL_IMPERSONATE,NULL,EOAC_NONE,NULL);
" e$ K/ U6 @! Y& f" s' f 3 L0 D8 M1 A) H8 ^ F
7 q! O2 v5 _: R* q. w: k; U2 F& J
if(FAILED(hres)) - {0 M$ {' a- Q, t l* f) @! S
{ % I+ S4 D9 D* V4 a: y& }
cout<<"Failed to initialize security. Error code = 0x" 2 ~( E, p6 a% Q8 \
<<hex<<hres<<endl ;
( r! ]. o% `2 |9 |0 f) B) Y CoUninitialize();
( t: p1 y8 q% l" B; f return 1 ;
9 z- Y: B& E5 d; Q) T$ Y3 E; M // Program has failed. 1 `4 k8 U5 v: y; g+ H) b
} % G% M7 W+ _* `" r9 o
) |4 y3 [0 a* J0 B
// Obtain the initial locator to Windows Management on a particular host computer. 0 B) M5 c9 q/ C6 `, I
IWbemLocator*pLoc=0 ; 6 b4 h* U' X/ k' l. q/ w; T
) i& T$ h5 ~2 K" k2 T
hres=CoCreateInstance(CLSID_WbemLocator,0,CLSCTX_INPROC_SERVER,
% J n) k) G! A4 Z4 p, \ IID_IWbemLocator,(LPVOID*)&pLoc); * D: |7 E$ Q. E; [; r# l) `3 ?2 W, D
; c; a6 Z( J2 ^0 }; ] if(FAILED(hres)) . q9 \7 n( l3 K; J$ M8 S V8 C
{ 7 H2 ~( G6 B0 E
cout<<"Failed to create IWbemLocator object. Err code = 0x" 3 ~( j3 Y5 o' c; M) }/ n* h0 s
<<hex<<hres<<endl ;
. i. V. T+ Q o" y CoUninitialize();
0 ^% a' q; p: c return 1 ;
4 n. x3 M0 r; Q7 J/ _5 \3 v // Program has failed.
- L1 j* Z) E5 y5 Y. O8 T. N1 E }
$ g( I) g. ?$ @* p) e - }2 h/ [9 }3 y" u& _) p. E
IWbemServices*pSvc=0 ; ! A, X' v0 _6 f" j* L3 f4 f
5 E0 V! x4 i' ?; V( o; u
// Connect to the rootcimv2 namespace with the current user and obtain pointer pSvc # [$ B$ g3 m( Z
// to make IWbemServices calls.
; q3 X+ E- S: B5 W, Y( B
" s; l# s% K( A2 j9 h) ~# \ hres=pLoc->ConnectServer(_bstr_t(L"ROOT\CIMV2"), 8 H* t$ N( F0 r' j$ U
NULL,NULL,0,NULL,0,0,&pSvc);
( X1 s7 D$ \( s# [& z- P
& \7 n3 d1 T* f9 U4 E( f9 ~* P if(FAILED(hres)) . e3 e* x, r. w
{ T4 c/ ]5 O; a5 o+ y- ?+ E; D
cout<<"Could not connect. Error code = 0x" 2 [+ P' ?. z9 j B$ o
<<hex<<hres<<endl ;
4 D# M" V6 F# V- Q5 Q# T* V pLoc->Release(); 4 N6 K+ G5 I F7 }
CoUninitialize();
* V1 _ W! J5 y2 J3 ` return 1 ;
% \* R6 _5 J/ i7 u // Program has failed.
5 ^( |+ ~. C& F8 N6 X } , m, e2 ?* T, O5 t; b: V% H/ m
0 q* s1 r1 Q; P" \# n# x
cout<<"Connected to WMI"<<endl ; ' p" j! {" O7 [ D4 a) Q
s& e# Z! ^3 g5 j* U
// Set the IWbemServices proxy so that impersonation of the user (client) occurs. / _; B' {" A6 ?' i" B' W
hres=CoSetProxyBlanket(pSvc,RPC_C_AUTHN_WINNT,RPC_C_AUTHZ_NONE,NULL,
! H, K+ t) e$ w: @; n3 C RPC_C_AUTHN_LEVEL_CALL,RPC_C_IMP_LEVEL_IMPERSONATE,NULL,EOAC_NONE);
7 T. J" ]; d1 `0 W+ p8 E, k' m o
$ x- h( y9 o2 t5 `/ A0 r; Q$ q' n" {! U if(FAILED(hres)) , M2 y: R& p) Q* a7 M! D- b# j
{ ! N$ e1 c5 L2 R! P' t4 [4 X
cout<<"Could not set proxy blanket. Error code = 0x" , D8 P) g2 p6 _0 x4 L2 [0 r
<<hex<<hres<<endl ;
- X( {9 T0 C0 z! D f+ T2 n) R pSvc->Release(); , P( V2 c) }( O3 V; P. Z3 p4 m
pLoc->Release();
% \/ O H# _( O' A8 E CoUninitialize(); * }4 K+ |* w1 Z# X
return 1 ;
# l% h) g3 W8 h' N1 L6 S# M // Program has failed. + M6 ^6 r, L; @0 v j& ^* I; N. L$ o
}
; {% x; j2 P2 g4 @6 Y2 E: u" r 4 N2 F {$ ^0 \" ^
! Q, I- O% @0 i9 @6 g8 C8 q$ s0 N6 u
// Use the IWbemServices pointer to make requests of WMI. 7 p9 L1 s5 _: H1 f- N
// Make requests here:
" p8 j9 C+ [" K# y0 }% b- C9 w 8 ~8 K- z: G k8 [9 a0 i7 i
// For example, query for print queues that have more than 10 jobs
4 _- N( Z5 s: X( H IEnumWbemClassObject*pEnumerator=NULL ; 6 {4 N7 ~* }, r
hres=pSvc->ExecQuery( 0 ~/ Q% ], T) \8 P; K5 L& `; X8 J
bstr_t("WQL"),
0 ~# H7 T9 V/ k0 P bstr_t("SELECT * from Win32_BIOS"), ) y( z5 Y3 m' @* g2 f
WBEM_FLAG_FORWARD_ONLY|WBEM_FLAG_RETURN_IMMEDIATELY, ; ~, |% ^" u4 t( }! ]
NULL, / G* G8 z: E- q6 x) J- t
&pEnumerator);
o( t' F, F e4 g0 c 0 C# _' k5 N: _" Y$ O. O
if(FAILED(hres))
% t/ B+ ~) |: s { 1 I' K, E! y- M6 f5 F; A/ S
cout<<"Query for print queues failed. Error code = 0x" $ G( p/ a1 z: P' n) U( B. Z6 c
<<hex<<hres<<endl ;
$ \4 n. a8 q* q( ~' P- a pSvc->Release(); " Q% N4 H+ I) p9 \, A
pLoc->Release();
% }7 \. \: E) B* l; k CoUninitialize(); $ T% _6 l$ H& _0 W; J
return 1 ; & \/ Y$ q) ~% ~5 x7 t
// Program has failed. - l1 g a' r" y+ j
} ; l! i8 {. s; @- i4 D
else
h* w$ I8 a, V! b3 F; [5 _ { % j, T1 _, V& z! g; E
IWbemClassObject*pInstance=NULL ; ?; O. t+ ^5 p: P, i2 o
ULONG dwCount ;
: J2 H; o- g" ^ while(pEnumerator->Next( - @$ q2 L! f8 t7 O+ X! t
WBEM_INFINITE, ( I2 v6 [6 y3 h$ N! H0 S7 b6 s6 F
1, & i2 A9 y: `' j7 [
&pInstance, ' y# ]* D( m1 ^" e" D0 D
&dwCount)==S_OK) 7 N t, @; h& g3 x, |
{
! j& y1 h* [: F& K SAFEARRAY*pvNames=NULL ; 8 Y, c7 i7 n. _ ]4 M0 R
if(pInstance->GetNames(NULL,WBEM_FLAG_ALWAYS|WBEM_MASK_CONDITION_ORIGIN,NULL,&pvNames)==S_OK) , r/ S. W* R% Q3 P
{
8 s4 q+ v1 M" f2 t% _) F" }/ r long vbl,vbu ; * H! V7 A# g/ F
SafeArrayGetLBound(pvNames,1,&vbl);
3 q6 T) f: Z% P4 ] SafeArrayGetUBound(pvNames,1,&vbu); ( {% r3 i3 Z1 f' g0 o
for(long idx=vbl;idx<=vbu;idx++)
5 y, T- y9 S4 o+ s X { ; J9 t" s9 A; l+ P- o4 m5 l4 c" ^- h1 Z
long aidx=idx ; 5 t3 p) k- G) q$ T
wchar_t *wsName=0 ; ; x a. ~3 o7 S1 r/ |; K2 Y
VARIANT vValue ;
Q5 l# d" x: o1 u VariantInit(&vValue);
/ H4 H' a* {! k) w0 D ) W, Z& p4 h! e. \$ Y. i9 a" s
SafeArrayGetElement(pvNames,&aidx,&wsName);
7 o/ k, K/ ^; v6 J( ^
' s7 x, H9 |& S/ I" ]2 a BSTR bs=SysAllocString(wsName);
$ x; `' v- x# a Q3 ] hres=pInstance->Get(bs,0,&vValue,NULL,0);
) B' h: o- Z. F/ j SysFreeString(bs);
; ~0 Y1 H. n0 D$ z4 |
: n, ~, v/ Y* y, F6 J5 c
: P# T4 y! y( I if(SUCCEEDED(hres)) + m" h N, ~1 \/ D0 G
{ & H% {/ g7 O4 s3 z4 Y) J& |; |+ b
char szANSIString[MAX_PATH]; 3 s2 x7 d0 |6 F: B) K, O; B) O! Q
WideCharToMultiByte(CP_ACP,WC_COMPOSITECHECK,wsName,-1,
9 G( k# N$ q9 f2 }; A7 f szANSIString,sizeof(szANSIString),NULL,NULL); 7 M! S5 c7 V" c, | x, c
7 b) ~ n3 _$ E
cout<<szANSIString<<" : " ;
+ D$ m6 q/ J0 q7 [7 u) Q' u% { switch(vValue.vt) 9 p- E& r0 G8 O% F
{ ) T. x; k y: C1 n r5 S% j
case VT_BSTR :
9 R5 f; Y! @- p0 t! s5 q- O wprintf(L"%s",V_BSTR(&vValue));
' m" @ ~& t% _& v/ Z, n' A4 U break ; 8 r- [0 w5 X8 P" z1 ?- V; M
case VT_I2 : & N) J8 \4 t' }: ~: Y
wprintf(L"%d",V_I2(&vValue));
* n2 X. B6 b: a; [7 \ break ;
6 n8 |2 y# C5 L- x0 r+ ~ case VT_I4 : 0 N/ h& f& ~/ g. T: h, _4 q
wprintf(L"%d",V_I4(&vValue));
, [* r* @" |& t& o0 K" f break ;
, f V* ?" C7 [! l case VT_BOOL : ( x0 O0 d: ]. Q, v
wprintf(L"%s",V_BOOL(&vValue)?L"TRUE" "FALSE");
- G& l+ v0 e! d. s& }2 |0 G break ;
' Z( N( r: a1 z, I/ ? default:
' h, R6 [7 e! ^$ s7 C- p1 v /*WCHAR tmp[100]; ; D, G4 ~/ s0 c! V7 [# j6 L, ~
wcscpy(tmp, V_BSTR(&vValue)); : E g" z4 q- ~/ x
char tmp1[MAX_PATH];
$ k, Q* B4 \5 z& R5 K5 ] O WideCharToMultiByte(CP_ACP,WC_COMPOSITECHECK,tmp,-1,
, x. m" [6 K; A2 p tmp1,sizeof(tmp1),NULL,NULL);
2 ]% A2 {; o# O- b. @6 \8 L# Z! `( p % t) g# d$ f5 I* V# m. m; I
cout<<tmp1;*/ , S2 S' |3 v: a+ M) o2 _2 `% D6 J
break;
8 I/ C( n% A; k# N4 ~1 S" ^2 a } e8 K! k6 n, u
cout<<endl ; W9 ~! D8 z" K7 h% F- n& ~: o
} 4 a* G8 m# {5 ?- _) A
2 t8 j( q) i4 `* S
SysFreeString(wsName); $ q+ X1 }/ {4 s% c9 i8 _: y2 T* D
} ( E+ D. ~' \& i3 ]) ~
: h' l q2 s2 T! S" Q }
- V/ T: R/ Y8 ~; M' e/ x7 f% @5 A else ; O0 |0 Y. _* C; q; U
{
2 I8 ?! O+ H4 `5 h cout<<"Query for print queues failed. Error code = 0x" : u; A4 w5 V7 H+ c
<<hex<<hres<<endl ;
2 A3 v& s% W; | pSvc->Release();
4 S, n* h3 l2 d4 O" T pLoc->Release(); ( P9 o* z- V4 o& I* j( s
CoUninitialize(); : m* C- n9 L$ J4 h% X! G7 f
return 1 ; 0 r* t1 s! J) d) q. p
// Program has failed. $ A/ Q% @" ^" x2 @( C
}
4 D j; x, U. M4 V+ V if(pvNames)SafeArrayDestroy(pvNames); : Z/ x% B/ ]6 O" N, L8 _* `
}
2 C& h1 t1 }. v0 }1 \6 |; B+ V if(pInstance)pInstance->Release(); , Y7 F2 R" A/ B$ L, S1 k3 W9 Y
' k" h$ Q2 \7 t$ ~% ] H; B( U; O
} 3 C# s6 n) j P n$ t$ p" o
// Cleanup # h: A( \' G# ^( r/ M$ |
// ========
. N, `! o! X# Y* C6 _: n5 { pEnumerator->Release(); ( i3 V) V+ p6 A. R$ W% B7 q1 n! a
pSvc->Release(); 3 [/ v( N+ m; b Y! P" ?
pLoc->Release();
4 R& \6 ^* c" |, Q' j CoUninitialize(); % R. E6 n0 k5 P* o/ n- j3 T
0 n% E& v, U N( ?+ j; b& P
return 0; & o" u2 L1 {- A6 `$ X, b& Y* b
// Program successfully completed. 2 @; M& b4 L/ O6 ~2 }3 ^
} * c6 Z) G6 N: ]; H0 T5 h4 ?6 u
//-----------------------------------! I) l- x% |) p# M7 H: P v
9 B! a5 C6 f! e: ~* ? 对于怎么用BCB编, 感觉还容易一点,因为我在类型转换的时候碰到了一些问题,而在BCB中的Variant类做了比较好的封装, 具体代码可以 http://www.cppfans.com上找到. X- P" h- W, `, y& r
6 a/ ~# u3 ~6 N, e void GetWmiInfo(TStrings *lpList, WideString wsClass) / U X4 w8 ]. `
{ ( t/ U* R# D$ B' B9 U
IWbemLocator *pWbemLocator = NULL; 7 v0 \* _7 [3 q+ w' ]
if(CoCreateInstance(CLSID_WbemAdministrativeLocator, NULL, CLSCTX_INPROC_SERVER|CLSCTX_LOCAL_SERVER, IID_IUnknown, (void**)&pWbemLocator) == S_OK)
) q7 f, ?" j6 m* [ Y2 F( w3 f/ e { 3 S9 x3 D7 p( ^3 V2 y
IWbemServices *pWbemServices = NULL;
) C+ u/ P8 m: y WideString wsNamespace = (L"root\cimv2");
. C" t% [% Z; f4 \" {/ C! G if(pWbemLocator->ConnectServer(wsNamespace, NULL, NULL, NULL, 0, NULL, NULL, &pWbemServices) == S_OK) ' i4 i: Z! t, w8 F0 V
{
. |/ u8 Z) Z8 y1 y5 ?8 j IEnumWbemClassObject *pEnumClassObject = NULL;
- x$ n& Z% u: p WideString wsWQL=L"WQL", wsQuery=WideString(L"Select * from ")+wsClass;
1 I' f O$ ^2 c7 w* m if(pWbemServices->ExecQuery(wsWQL, wsQuery, WBEM_FLAG_RETURN_IMMEDIATELY,NULL, &pEnumClassObject) == S_OK) ( k( \7 s& |. n4 I
{
! E6 n4 Z8 D! Q0 ^8 H IWbemClassObject *pClassObject = NULL; ; N) C b5 s! w
ULONG uCount = 1, uReturned; / x( T$ P" u% K. L
if(pEnumClassObject->Reset() == S_OK) + j( [. Q4 T e% B& Y- ^ ^1 ?' U
{
- D+ s: z1 F* \* @ int iEnumIdx = 0; & U' O8 Z& N) H% f+ y3 s' e5 L& B
while(pEnumClassObject->Next(WBEM_INFINITE, uCount, &pClassObject, &uReturned) == S_OK) Y6 P# `) S- j9 G6 T% y) @' M$ v
{
7 I8 p9 o U- d9 S+ a' }" A1 h lpList->Add("---------------- ["+IntToStr(iEnumIdx)+"] -----------------"); 1 U4 A9 `% B" L+ p
( I8 e/ T1 w; Z0 z& n3 \, g+ C, e% w% [ SAFEARRAY *pvNames = NULL; ; ~7 @7 P2 @! Z) h& T6 L" |
if(pClassObject->GetNames(NULL, WBEM_FLAG_ALWAYS | WBEM_MASK_CONDITION_ORIGIN, NULL, &pvNames) == S_OK) 9 [; R% M: r7 q) z) g0 H7 h: I9 U/ o
{
" l5 s; S: ?$ r6 E7 q9 q& Y long vbl, vbu; ! U" @4 i; q; }: s# A# L
SafeArrayGetLBound(pvNames, 1, &vbl); 4 G9 x4 j) \. {
SafeArrayGetUBound(pvNames, 1, &vbu);
, \6 ~" t5 n" Q; M7 g for(long idx=vbl; idx<=vbu; idx++)
( o2 W. ?+ l" w- M& n { |
|