我现在用c++编写了一个程序,希望能够和extend交换数据,以及自动对extend进行一些操作。我参阅了例子里的关于OLE AUTOMATION方面的c++程序,但搞得不是很懂。比如说,c++程序向extend发送一个数据:4 v- l8 z' H7 q
Name = (WCHAR *) L"Poke"; & m" K( m, a" c4 r/ ?' l- z 8 ~4 J' ~) Q5 B: A2 }& O" l
hr = m_pDisp->GetIDsOfNames ( , x$ h$ Y, R) Y& H1 w IID_NULL, // reserved9 X+ H: Q, x! O) {4 B7 g) B
&Name, // Array of names to get IDs for ! m& V+ V; [3 N" r& q 1, // # of names in the array ' Q8 z, Y4 h; O9 p LOCALE_SYSTEM_DEFAULT, // System locale & Z G% ^9 J% d" z5 L) A! G &pokeID); // Array of IDs to fill on output & \- k& r! l) p; Q$ w/ _ ; n7 ?' @* Q* w
if (hr) & ?) F4 b, v& D. }/ v: B& r { " C1 D1 x, j" `. k& z; ] e: W MessageBox ("Get Poke Unsuccessful"); " S8 z4 w6 G' F' F% p- ] return;) g/ c: ]( `) H) q: t8 F( x
} 4 c- O: w* y7 T. K4 @1 h4 W 5 l& z3 s' v) h/**************************传递数据给extend**************************************/ S2 j& x. A1 L8 f$ f- Q7 I pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); 0 a: r$ I9 d& k( S1 ]. X 4 Y& O& @8 l) g$ g& @, Q" o
valueStr = SysAllocString((WCHAR *) L"1232"); & H) o$ ]. d3 T4 \ VariantInit(&pokeVariant[0]); - j3 U4 ~4 O! B+ S+ ~. W pokeVariant[0].vt = VT_BSTR; % p3 g* j% Y: {3 X pokeVariant[0].bstrVal = valueStr; * E% m7 f7 M+ g5 P! b6 O0 _7 L 7 h3 f' v E) z" n' t itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); - Y1 ] n/ f. t# W VariantInit(&pokeVariant[1]); ' p6 d+ N3 f3 y# b
pokeVariant[1].vt = VT_BSTR; 1 m# I% ^4 H' B) n+ l pokeVariant[1].bstrVal = itemStr; : v- }& h5 H* {# q: A / q J; K0 t. O/ B topicStr = SysAllocString((WCHAR *) L"system");! c0 M2 f! y4 I3 a# N, R, S* g. s
VariantInit(&pokeVariant[2]); 0 H% G8 k: N H. q' g; }( u3 ~% @ pokeVariant[2].vt = VT_BSTR;; w2 ]/ n/ N2 `! R
pokeVariant[2].bstrVal = topicStr;2 s d, D1 G+ T, x
3 q4 n, N, h4 K: f$ h$ `* ^// Set the DISPPARAMS structure that holds the variant. \7 y: w6 `' w* y% n- r2 u" K + \5 E9 W1 }& K/ e% Z dp.rgvarg = pokeVariant; # U% m5 C& ~, I1 N dp.cArgs = 3;; ~2 V8 A6 F" W3 y. m
dp.rgdispidNamedArgs = NULL; ' S$ M5 Q9 a- Z' W1 F7 b% ?- ^, m dp.cNamedArgs = 0; + V0 m, S9 R* a8 q) w" G2 ~/ Q' Z) B1 r y1 J! N0 {
// Call IDispatch::Invoke()& g: J) I2 Z; q" e1 e3 l* h0 n
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hr = m_pDisp->Invoke( # j- n6 F; Q) ]0 E: f pokeID,) d) W& n' H* ] \8 C- b& H5 O# X
IID_NULL,; Y. t5 Q* s! s) B2 [
LOCALE_SYSTEM_DEFAULT, , c* U" r- f0 X$ M. t DISPATCH_METHOD,7 O4 J# |& l2 m7 I+ v2 i1 l
&dp, ; Z/ {, \) u7 h+ Q; Q' g) F( N% x8 i NULL,+ w z" v3 s( y! p. s
&ei, & u' K# t! ~2 p2 ~ &uiErr);+ J( y1 Q) n0 e C4 V
! J2 Q1 L Z: r/ x& ]3 W5 |; K& y SysFreeString(topicStr);5 v. \) C6 ]% l' k J c
SysFreeString(itemStr);6 ~/ L3 l; `3 \+ F! r) M$ U4 h W
SysFreeString(valueStr);5 M1 Q$ [4 l5 C: @
+ B, g3 [4 T, a! a! f. Q现在这个程序可以实现将1232这个数据发送到extend,extend有一个对话框弹出并出现1232这个数据,不知道这个对话框为什么会弹出并显示这个数据???- l D, G6 h2 T3 l: i
此外我希望将这个数据赋给extend程序里面的一个变量,请问如何实现????( j# B; ]3 H$ A: x- S' ]& N) y4 N+ S
3 V* R: n* [" m8 S/ W6 x' C $ I% C8 v% H, \2.这是request的程序 4 V G: j2 K0 \/ `$ s( [ d// Request a value from Extend( q$ E# x: R/ H t
//5 e0 l1 ^3 B3 f/ o
// Initialize the variant that will hold the BSTR. Set the variant's! l8 ^3 ^, _0 m. ]
// type flag to indicate the fact that this variant holds a BSTR. Place the $ p9 i' P* g' I! ~// BSTR into the variant structure.& u; ]% P# |0 C7 U# P) s e o
# W1 w K) [/ G requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);5 b/ J8 f( ?' n9 ^. y l2 v
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 8 }8 L) @& R" L" L( j VariantInit(&requestVariant[0]); % P+ g5 h' k% z) M/ L8 o
requestVariant[0].vt = VT_BSTR; 5 H" a( m: Z6 N' [ requestVariant[0].bstrVal = itemStr; 1 G0 N; f& ]0 |( O# \% {( ?! b+ @0 d
topicStr = SysAllocString((WCHAR *) L"system");; Q Q: `/ f9 i1 r" a( Y
VariantInit(&requestVariant[1]); $ O" W2 Y9 T! N; x9 n requestVariant[1].vt = VT_BSTR; 5 ~$ G1 C# ~6 O" J0 f& T' ?/ F requestVariant[1].bstrVal = topicStr; ' f# Z' X& V0 ~' t4 t$ B. E5 ~8 Y: Q9 K7 h+ ]* J
// Set the DISPPARAMS structure that holds the variant. - z0 v8 C# [" Y" Z# I2 S. D$ S( O% U ; m* c, S$ q5 _! k dp2.rgvarg = requestVariant;; L; |' F. K. V# M7 P3 O# j) E' t# L
dp2.cArgs = 2; ! t- w2 c5 L+ v2 S" V' q" k dp2.rgdispidNamedArgs = NULL; & n& Z2 S/ L* v* g# j$ O- ^ dp2.cNamedArgs = 0;- q7 d( k# \9 b. T" K# j$ P
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var.vt = VT_EMPTY;1 I4 v" U5 p1 O2 l, ~' {. R: Q
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// Call IDispatch::Invoke() 9 d, m& V5 ]8 {" K! m0 `; |; N7 Y3 t* v5 f5 B
hr = m_pDisp->Invoke(6 p r" C- ?7 K( r6 r; V
requestID, 9 d% f# w, K; [- t IID_NULL,% Z8 N' T* D7 D9 Y9 O& y' | k& |! I8 P
LOCALE_SYSTEM_DEFAULT,8 R- v5 W+ b% X# M+ F, `
DISPATCH_METHOD, * X( u! y6 Z+ f9 q5 e+ H( c9 E &dp2,8 G% G" b& w7 _5 _' u+ u
&var,0 Q- U2 `- `3 \/ Q
&ei, : \+ S( ^3 x8 L5 E. j: ^: w4 _ &uiErr);0 C$ q; L p; p$ ?. t8 a
$ `- c' e2 k5 _( o' Y0 f! J SysFreeString(topicStr); " }3 E% q; H/ m5 ?3 g6 E SysFreeString(itemStr); + E% A, ^5 O$ G请问该程序是获得extend里面的哪个值?. A% F9 U$ d% W$ Z
如果我希望获得extend程序里面的某个变量的数值,那个c++程序应该如何实现????