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:7 Z, J* V" e* u3 Q3 ^7 S
Name = (WCHAR *) L"Poke"; " `3 i9 `$ D) z. s 2 Y( l0 g8 v) _: c( G9 M! T
hr = m_pDisp->GetIDsOfNames (1 r3 v5 [; T m- b6 {
IID_NULL, // reserved + h G$ |8 ]3 x* Y3 Y6 w &Name, // Array of names to get IDs for5 M Q; e1 W6 F
1, // # of names in the array ) f2 h- t! R5 g I/ D/ ` LOCALE_SYSTEM_DEFAULT, // System locale6 c' C s, h0 j9 T2 Z" [
&pokeID); // Array of IDs to fill on output & g* A6 a7 L; W0 q# A ) c; ?* N' i# A9 |7 ~ if (hr) # o9 y: n) N1 v { 0 \. D) z& G" I1 ` MessageBox ("Get Poke Unsuccessful");# H; Q% J, i; @ [, L$ q7 d9 H5 t
return; ! v2 o; W/ b9 P7 T0 @! p9 K }9 W( M1 {% b6 |( H2 j2 l
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/**************************传递数据给extend**************************************/$ r. i9 t8 f" Y& b9 J$ J
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);6 X# h `) m! c1 I
- F7 s# R! p% N, _( | valueStr = SysAllocString((WCHAR *) L"1232"); ; ?, R1 H- d4 |1 o VariantInit(&pokeVariant[0]); : `% q# s4 w7 R" l" d pokeVariant[0].vt = VT_BSTR; 6 D( r2 u3 o" s- r. ] pokeVariant[0].bstrVal = valueStr; $ G! c" Z( A# p+ \- q* g: r! c- f& K8 J. l9 y7 p6 o0 y3 N
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");" L* E: h, T; p3 }. |+ v
VariantInit(&pokeVariant[1]); - e2 G, h7 q* z7 E3 d* Y pokeVariant[1].vt = VT_BSTR; 5 m/ y4 s F' m( R pokeVariant[1].bstrVal = itemStr;8 R# R" t3 {' r$ ?) g: W k% ^9 W
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topicStr = SysAllocString((WCHAR *) L"system");- a( f% k: H |4 j
VariantInit(&pokeVariant[2]); % N$ E. z" o W, n S6 `8 }
pokeVariant[2].vt = VT_BSTR; 6 n, J4 ?& n2 r4 B, _ pokeVariant[2].bstrVal = topicStr;0 X; d! J" h9 O) G; u
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// Set the DISPPARAMS structure that holds the variant.$ c3 j" Y# V, K) N$ T$ @# l1 p
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dp.rgvarg = pokeVariant; % f7 K3 g G3 G3 `: C( j. ` dp.cArgs = 3;: v7 f i6 {5 v6 }7 k% h1 W4 C
dp.rgdispidNamedArgs = NULL;& \+ q7 y4 f! S( Q/ C3 p) _& h8 @
dp.cNamedArgs = 0; + Q: o1 u1 I* X9 K! E1 v 9 m# V, N; R" s) Z/ B// Call IDispatch::Invoke()4 p6 x; L" g4 e" L2 t& E/ n# Q
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hr = m_pDisp->Invoke(+ J% v# m' x6 T0 z2 S6 w' l
pokeID,. |& e% B" \! b( S$ r' }) t ^8 a
IID_NULL,* G, @ h) C/ M, y( G8 R' `& z
LOCALE_SYSTEM_DEFAULT, ; s' f3 m2 W- ]3 J DISPATCH_METHOD,. r; U7 { p0 o$ ]3 i4 _
&dp," B# l" z! |6 M
NULL, % X+ N" b7 _7 @* a9 c7 c4 i &ei,. C% u) k. l" C6 F' A, ]; `# @
&uiErr);* F- I% m0 ?( S. @3 l
9 Z% H$ O2 W/ H+ q } SysFreeString(topicStr); # Z) ]/ F3 p8 v) n4 i SysFreeString(itemStr);8 P8 s2 z4 D$ @# `; i- s
SysFreeString(valueStr);9 |2 N6 P7 F; V# [$ y
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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???0 q8 s$ Q" C; j( f7 n/ ~/ k5 }
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???? 7 ~, ?& J0 ~1 }' U& x 8 o. X9 `3 h" W- B & N" P7 V4 S1 q- p) }2.这是request的程序, M, W. S6 Z/ Q7 z5 O" p
// Request a value from Extend o$ W/ f, x; D4 H
// 8 o& G' t& K- \8 @0 X! }4 O// Initialize the variant that will hold the BSTR. Set the variant's1 O) e, {% d& p. A. }3 J
// type flag to indicate the fact that this variant holds a BSTR. Place the Z+ X5 o. U; A9 Y3 p! V; i7 Z// BSTR into the variant structure. g5 w0 W+ X! R& Y4 [ }9 v
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requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); 3 l, k3 X6 @5 q - d# a, I5 y% h0 j) f7 ~ itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); # q( K7 A, l/ M2 A% d; g VariantInit(&requestVariant[0]); : l$ g: M, h0 m. w7 S
requestVariant[0].vt = VT_BSTR; ]0 {# A1 U: L
requestVariant[0].bstrVal = itemStr;* }, Y/ ?( H. r O4 ~, R
' L+ @' q& {+ u6 o4 o9 h topicStr = SysAllocString((WCHAR *) L"system");# m1 v" h# u3 ?* S7 [7 ^# j7 ?
VariantInit(&requestVariant[1]); / T: c5 ~2 ^: Q: X! ~ requestVariant[1].vt = VT_BSTR; 9 L: L [2 ~5 `1 P) E. H requestVariant[1].bstrVal = topicStr; C$ n% g' ~8 i$ w' X/ c0 _8 s8 X8 Y/ {+ a( e* `2 e" S2 I2 E
// Set the DISPPARAMS structure that holds the variant.& w* q; K% {4 \% f
) J" c( C0 l0 a d- D$ b) ` dp2.rgvarg = requestVariant; , z* \5 p% {- O7 `' l dp2.cArgs = 2; 9 R+ T+ K$ H" Y( Z u6 ?3 s1 W dp2.rgdispidNamedArgs = NULL;! ?6 P4 B& o% I& V- m: [8 x
dp2.cNamedArgs = 0; : N5 u7 Q' U' n9 n8 ~; v4 H. k: {. T# c- W* _1 Q
var.vt = VT_EMPTY;/ Z8 N$ e# J6 J. I7 Z
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// Call IDispatch::Invoke() / o% a' m8 f8 a# _# z6 D W # ~4 Q9 ?* ?" g/ [! t: I hr = m_pDisp->Invoke( - n" b4 G* d: f2 o9 U" N requestID, t: A4 H% G* ~, s$ J4 w# B2 W% B IID_NULL,/ X. [9 I7 z2 \: K6 b. ]5 a
LOCALE_SYSTEM_DEFAULT, 0 W- g6 j8 D. V. X; t L9 } DISPATCH_METHOD, 9 n: {+ r) u/ F+ R &dp2, 1 G4 W6 R) g a' k" S &var, 2 @' C1 f. }+ [* \/ c) s: m &ei,7 Q" W* p% ^+ L2 {
&uiErr);, g# k: ^. y, h# {) N$ U
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SysFreeString(topicStr);% n# a; H8 J [4 s
SysFreeString(itemStr);/ L' w3 n" _2 o1 p8 H8 v3 n; x
请问该程序是获得extend里面的哪个值? 5 u2 v( I2 D/ x/ d4 U3 v! x& M0 L) {# s$ E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????