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:' M- w5 C- K5 k6 H' r. D
Name = (WCHAR *) L"Poke";. _' u. H- L) Z. `2 S- N
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hr = m_pDisp->GetIDsOfNames ( ; k+ G! g% e/ Q. D: S# e IID_NULL, // reserved3 b+ t5 o0 Q$ q# T: l3 |: E' Y
&Name, // Array of names to get IDs for2 o# D Q! |' m7 r: v" ~
1, // # of names in the array 2 |) [5 |. Z/ d9 F' [" F4 w4 ^ LOCALE_SYSTEM_DEFAULT, // System locale1 j: g. e" P6 U* {
&pokeID); // Array of IDs to fill on output & L: w/ M! v9 i6 J2 e3 h# v 1 |$ V0 q3 W9 f. z; ]7 ?& Y if (hr). z/ H8 j) j' U
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MessageBox ("Get Poke Unsuccessful"); 2 u8 g" @# e# \2 X3 c; ^ return;! f9 J) |+ d; _+ V" V
} ; O* @7 R' Y4 [% {' B L% m) q. a% y+ x& g4 `$ M% A5 F
/**************************传递数据给extend**************************************/# d' m- T& X8 K
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); " Z( S; A# V7 |* z" A& o1 h * G, R2 ~( `+ O3 z valueStr = SysAllocString((WCHAR *) L"1232"); , x' u3 V& L- s6 B+ F9 ]5 V- Q VariantInit(&pokeVariant[0]); + Z2 j! F: ~/ M- E/ t) \& B8 m
pokeVariant[0].vt = VT_BSTR;$ W8 ?5 A7 o' m6 n2 o% B5 {
pokeVariant[0].bstrVal = valueStr; ! |# E* {$ b4 M ! U/ h( |8 E/ d- C' Z itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0"); 3 q. X6 i) `% m$ R3 H VariantInit(&pokeVariant[1]); : ~6 D/ s9 H, u6 O/ j% y
pokeVariant[1].vt = VT_BSTR;, ^6 _1 y" \8 t T
pokeVariant[1].bstrVal = itemStr;- n M/ x& _$ ]1 k8 f" W5 d
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topicStr = SysAllocString((WCHAR *) L"system"); + J& i0 d" J, y2 T4 {% q ^! X VariantInit(&pokeVariant[2]); 8 z' U8 j" _, Q" m pokeVariant[2].vt = VT_BSTR; ; n9 G0 o- ?- M# m% [ pokeVariant[2].bstrVal = topicStr;, u+ v5 [& z( p7 Q! H
) u" n2 e, C; x% E6 m4 ~// Set the DISPPARAMS structure that holds the variant. / L5 n4 t7 q2 j: T/ L) o1 r( q. q
dp.rgvarg = pokeVariant;5 k! |- t$ Z* n( b
dp.cArgs = 3; ( N! e0 p4 E; V" U dp.rgdispidNamedArgs = NULL;. S5 ?! Y1 K. i$ l1 s6 @, Q" x
dp.cNamedArgs = 0; ) X Y5 l& I6 q" E) i& D : z; O" G" j3 \( K// Call IDispatch::Invoke() 7 g. z. Q* ]0 q+ x, m7 b7 t* S }. ^+ y( W3 B9 Y, E
hr = m_pDisp->Invoke( " C9 B3 E9 F# X0 k8 ~ pokeID,, B8 [5 o' @% _# v1 g" t/ k; q
IID_NULL, " N) L3 K3 h" ~* d LOCALE_SYSTEM_DEFAULT,6 T* ~4 w6 [8 @6 Y
DISPATCH_METHOD,2 z- G" _6 o$ r7 i( C
&dp, 3 V X. c, K. Q3 ~ NULL, ) o$ v/ g) j( _5 I &ei, 9 R( Z5 }" V! i# D4 A &uiErr);) r) q# h. p* F4 `# K
; e1 J Z H. x- V7 _4 d8 z SysFreeString(topicStr); # R; R8 O/ G, H( |9 P2 q SysFreeString(itemStr);' b R5 ?; G- \0 Z# s: q
SysFreeString(valueStr);6 n3 K" p/ B! M6 G! h1 `. c) x/ I
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现在这个程序可以实现将1232这个数据发送到extend,extend有一个对话框弹出并出现1232这个数据,不知道这个对话框为什么会弹出并显示这个数据???# l2 N9 R* j5 {; G A7 `
此外我希望将这个数据赋给extend程序里面的一个变量,请问如何实现????0 b$ H; X) |5 }- A
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" _' E- l8 {& r$ j6 h+ _+ ~2.这是request的程序5 k; @2 h0 a9 \# I/ c0 S# j
// Request a value from Extend b( }( W G% W- A0 `5 N
//" I1 k* Y. A: U2 Y) r Z
// Initialize the variant that will hold the BSTR. Set the variant's$ |* ~1 y1 n5 N! N, z/ x
// type flag to indicate the fact that this variant holds a BSTR. Place the: Q& i6 m9 s! W' l( k9 L
// BSTR into the variant structure. $ E& Z/ j6 P* o3 u" J. _" Z) A$ p9 _% \
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2); 1 O; h1 x; {5 L0 d. L% P / Q- s7 k& C0 W( z8 H0 z itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");* G6 [3 p1 N$ E L! ^! \) J/ R
VariantInit(&requestVariant[0]); 6 B+ z, l4 N! r. _
requestVariant[0].vt = VT_BSTR;, O @+ ~6 ^% } t% v3 b; E
requestVariant[0].bstrVal = itemStr;% e+ P- R7 s/ c" A. v# i3 E5 Z
5 Z" O; R/ f) t8 m6 L. F9 y" ^ topicStr = SysAllocString((WCHAR *) L"system"); * q, n2 y s. h2 h VariantInit(&requestVariant[1]); / c/ O) H, _) j, v* ~* e
requestVariant[1].vt = VT_BSTR;# U6 z: a6 y- C, H9 P
requestVariant[1].bstrVal = topicStr;4 t4 U- M. {3 A B' ^
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// Set the DISPPARAMS structure that holds the variant., w7 n. X: P) b. E5 t2 S; R; [
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dp2.rgvarg = requestVariant; , {& o2 Z0 E4 n% T+ v$ W# b2 E dp2.cArgs = 2; + u7 W# w" \+ |9 v& Y% p v, r dp2.rgdispidNamedArgs = NULL; ! ]. [9 s$ \3 n" y8 ]4 ^4 X dp2.cNamedArgs = 0;( h2 J2 t- N: S9 h
2 \' ~/ @- @: N/ _ var.vt = VT_EMPTY;+ o0 R2 v. @3 S, Y