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: 9 M7 L F3 Q* t) S4 u" I HName = (WCHAR *) L"Poke"; ! ~; { |$ H7 S) X3 N $ R7 e: a& N7 i, ~# y hr = m_pDisp->GetIDsOfNames (# G9 M3 G7 k5 v$ @8 }- g; x
IID_NULL, // reserved! \) j: {7 b# L) {5 p
&Name, // Array of names to get IDs for, W+ B D# S3 P6 [# X
1, // # of names in the array/ u+ Y( }! e: F: D4 }1 W
LOCALE_SYSTEM_DEFAULT, // System locale6 x; j- i, X1 S6 S1 H! c& H
&pokeID); // Array of IDs to fill on output " U/ B J0 J- y% m / p: m) j) S7 T if (hr) - b" j+ q3 p) Q( `' S! _ { ) N7 y6 G1 B. [( G/ z. T; Q MessageBox ("Get Poke Unsuccessful");! C, {( @; U5 m" c- Y8 w
return;# d7 }2 C l0 q( c( \
} 5 z* X0 Z+ ]; b& S* y) f $ Z& E7 y; N, h# A! t/**************************传递数据给extend**************************************/ C7 x: ` [. ]' }9 Y" }# e, G& @* a
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); " b. v2 e$ q7 F. _2 C n6 }9 d + }+ Q+ s9 q+ @& ] g: u- j
valueStr = SysAllocString((WCHAR *) L"1232");- Q0 \( @) `) \# d4 H* I2 l4 Q
VariantInit(&pokeVariant[0]); , I- P' G! I$ b. |1 }3 b
pokeVariant[0].vt = VT_BSTR; ; i' O+ J, @& j4 @# `( Y pokeVariant[0].bstrVal = valueStr;8 |8 F: V! @1 j! G/ ?/ C' E% d6 R& f
1 a; W& Q' r6 a% C j. R itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); ) q" [7 y5 U2 R4 [1 M& l" _ VariantInit(&pokeVariant[1]); , L8 I r) y' E- Y$ |. g+ v
pokeVariant[1].vt = VT_BSTR;1 k0 R6 Y6 s- J* f$ P- a4 H9 ^" ]# T
pokeVariant[1].bstrVal = itemStr;# N4 l2 |, P2 x
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topicStr = SysAllocString((WCHAR *) L"system"); 9 P6 }, Z$ V! ~3 N* {. m% t VariantInit(&pokeVariant[2]); ( X4 C/ m6 t# Y
pokeVariant[2].vt = VT_BSTR;, Y& x- j4 C" z3 s1 A7 M
pokeVariant[2].bstrVal = topicStr; / w, O; U9 u- H1 S5 ` - k* H; K5 [* y; T. G( a: S# b// Set the DISPPARAMS structure that holds the variant. ' E0 O9 P% }5 I/ ], k+ Q9 m2 e" r* j6 X' L9 [$ h9 f
dp.rgvarg = pokeVariant; 4 o" [8 ]5 R2 y% W# l- g/ o$ @( R dp.cArgs = 3; 9 |" |5 O3 H; U dp.rgdispidNamedArgs = NULL; ' m5 r; z6 q: \; I- | dp.cNamedArgs = 0;) U E" b* ?# G. I+ e& {
' x' X7 G& R0 z& N% l// Call IDispatch::Invoke(): h& j2 q3 J' M) S; E
) q: @1 U# C( c hr = m_pDisp->Invoke(% c5 F! Z0 s. ~+ N+ R- ^
pokeID, 6 }5 o% L; W9 P: O/ h9 _5 @ IID_NULL, 6 o d& _6 b( N; {$ ^ LOCALE_SYSTEM_DEFAULT,3 j$ E% i0 o& N& l
DISPATCH_METHOD,9 I8 h8 \8 I" G) l
&dp, 3 J! {- [# B; O; ~; h E4 E) T7 ] NULL,1 T6 {- V' z! N: ~2 ?' B
&ei, & L# n; ^/ g+ a: h &uiErr);6 e$ }6 C' L4 j& B. `4 E
8 r5 w: G2 t, U0 i SysFreeString(topicStr); 6 ^7 Y S5 _! V- r) X$ b4 q; H; Q SysFreeString(itemStr);6 `4 @. b& R! D% v8 h
SysFreeString(valueStr); l5 y- g+ c8 x- [) S% ?% T T; _* Y4 @6 b
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???" _7 _ o3 r) Z3 @+ T
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???? 3 {/ t3 Q4 m! I# N: g* V' \: Y. M8 C8 E1 a' Y) l
( Y% p7 g8 E/ D. W& d2.这是request的程序; _% ?% H" b8 k6 z$ v, c& a* W
// Request a value from Extend4 H/ @7 p" o2 x% I i- m/ @7 q
// . r; y# V' ^: `" S3 v" w! H// Initialize the variant that will hold the BSTR. Set the variant's G! b- d" O: H6 C2 _
// type flag to indicate the fact that this variant holds a BSTR. Place the 1 {6 L/ h/ i$ ^2 v* c8 O$ H$ w// BSTR into the variant structure.5 P/ }$ N8 e9 i, l( |2 u, k
; ^! i% S; B2 L, Y1 ^ requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); N X$ c9 |1 m! H0 r: M
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");! P, w8 _( J; V" Y( e. J
VariantInit(&requestVariant[0]); 8 ?' r9 n1 k% P( f6 T% A, U3 O
requestVariant[0].vt = VT_BSTR;0 y3 X" O0 G1 \ n
requestVariant[0].bstrVal = itemStr;% C2 {, D- u, k. P" ]8 X: O8 ~5 v) E
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topicStr = SysAllocString((WCHAR *) L"system"); d* b- B" F( L: z# C
VariantInit(&requestVariant[1]); % V: x1 L8 {) t: i
requestVariant[1].vt = VT_BSTR;7 O7 e7 U7 `1 o2 |7 A& C
requestVariant[1].bstrVal = topicStr; & h. p0 f# {" v; X3 y e' S, T. b+ P- P1 [0 Z! y1 ^/ d
// Set the DISPPARAMS structure that holds the variant.8 J2 M4 _ N, p9 I
4 s" ?. V3 }! u% S. n1 {/ w
dp2.rgvarg = requestVariant; ' J' z: f' J4 t+ S% U dp2.cArgs = 2;; R; o3 a- d1 p# W3 b
dp2.rgdispidNamedArgs = NULL;0 p1 g5 ?1 g; Q8 `$ @
dp2.cNamedArgs = 0;- d& ]2 O( G1 Q: j
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var.vt = VT_EMPTY;% w3 u' h0 M! o* |+ Y1 ~# E