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:$ v' U5 Y' Q/ d1 ^& x
Name = (WCHAR *) L"Poke"; : s. b4 w, A$ V+ z( |5 t+ M, L; L3 z) c 8 m/ k& `6 L, S: L4 D% Z' `2 Y9 n hr = m_pDisp->GetIDsOfNames (5 c O4 t) a% [5 l
IID_NULL, // reserved 9 O( H8 v9 n$ r; u$ x: u &Name, // Array of names to get IDs for # U% `, M$ `8 S, ^ 1, // # of names in the array 7 C( e* e( E* N: |" Y( s LOCALE_SYSTEM_DEFAULT, // System locale) p1 e; [& h, |1 Q0 ^! ~9 C
&pokeID); // Array of IDs to fill on output2 w1 t! c+ J8 {
; T& ^6 ^- C7 O) L' h if (hr) ; Q3 `" k2 _/ D {$ ?; X- O; U) }# \
MessageBox ("Get Poke Unsuccessful"); 6 x; v+ I7 g9 J7 w3 o return;% H; t* b7 K9 M0 y- Q9 t( N$ C. h
}4 c3 x2 ~/ W$ p$ B3 E1 Z
% e( I. Z, i( h" x- x* h( ~/**************************传递数据给extend**************************************/ ' R# J/ B3 c& A0 d' p; t* C pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); - e6 S0 h" s8 O0 H1 z & \$ w! t" C# J; X) _' k! g valueStr = SysAllocString((WCHAR *) L"1232"); \5 k1 Y# \$ [ B" B x/ w VariantInit(&pokeVariant[0]); ) O+ r# j* I8 [% K; Z. I+ x& r
pokeVariant[0].vt = VT_BSTR;+ S; l4 ]) J# P4 c. u
pokeVariant[0].bstrVal = valueStr; # a+ v+ O% z' }) r: e+ B+ _; m: \+ \2 u
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");* x+ D+ v9 B" t; R, M7 J; E
VariantInit(&pokeVariant[1]); 6 Z. {9 o: q1 L0 L pokeVariant[1].vt = VT_BSTR; " e& U W& r3 b$ |# O+ H0 v pokeVariant[1].bstrVal = itemStr;, X* e. t8 B4 b, Q. o) i. b
+ r, b- y$ t5 I* j1 ^" y
topicStr = SysAllocString((WCHAR *) L"system");0 T) e3 K( f& M/ r" _; T; n
VariantInit(&pokeVariant[2]); 1 t' |4 G% T' T- E! h% r
pokeVariant[2].vt = VT_BSTR; + k' |! b& \ n. u& W pokeVariant[2].bstrVal = topicStr; 2 x1 F0 t; i7 T- v) q/ }9 c6 R0 z! W4 T
// Set the DISPPARAMS structure that holds the variant. 8 v) h! ^0 Q; G/ K; s* |# V! K+ f0 D- G$ y0 z
dp.rgvarg = pokeVariant;: ]2 h7 m3 V3 r' K% w- u
dp.cArgs = 3; " o8 R; p( z% y* M1 b S' ^ dp.rgdispidNamedArgs = NULL;& y2 V. C+ b6 H( [4 R' X6 n9 B/ x
dp.cNamedArgs = 0;, o8 Z5 w, N* [. R _, U
1 `, x. D- l( K" z* I
// Call IDispatch::Invoke() - W- T3 R+ V' A4 a7 v, d5 L " }( L" y& k k# J. L; V( e/ {' @! I hr = m_pDisp->Invoke(# B- g H' R6 @. a3 |) g9 _$ P
pokeID,( d7 F' V7 P* S! i: Y! d$ j$ Q
IID_NULL, 2 Q" ?7 {8 t+ H$ v LOCALE_SYSTEM_DEFAULT,6 r( y. C5 r1 n0 t, m, Z, H
DISPATCH_METHOD,5 |& W. H s0 ~$ T y ?4 m# a0 s
&dp,4 e5 r$ P& e F2 `% Y+ u
NULL, 6 r9 G4 [/ E- w9 T; Z: Z2 w &ei,7 U0 q0 |6 |( ~4 S B
&uiErr);$ d0 e0 i8 F# R8 [
$ |7 u) H+ a0 u
SysFreeString(topicStr); ! l4 [% g( Q1 d" S SysFreeString(itemStr); - v3 b6 T# @7 o) y" B SysFreeString(valueStr);- m& e: Q; I6 K/ N: i9 Q; N7 X
. _ E- Q V- F. b9 P
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??? % b$ G% x# {3 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????% A! q0 U2 C2 W ?8 _7 q+ q; [
: Y" Q2 L* M" t! X- c. G" L8 h% V% F
5 ?* F% R0 Z" b T2.这是request的程序 0 s) _6 k% a: e; ?% o( b// Request a value from Extend3 O. t! P4 N+ W& j
//$ X+ c7 d; q! A4 M4 z; V
// Initialize the variant that will hold the BSTR. Set the variant's ' q8 |9 H* s9 \- u' N6 i1 G// type flag to indicate the fact that this variant holds a BSTR. Place the # I: d: K0 _5 u; W. y// BSTR into the variant structure.9 o+ j, M' F6 P5 }