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 i9 I# W5 X
Name = (WCHAR *) L"Poke"; 1 r7 O9 d- j" C# I s 8 m- V. c9 [0 X( b3 m3 n0 K; D- u
hr = m_pDisp->GetIDsOfNames (+ V1 V' A/ m. _& M0 b; u& v
IID_NULL, // reserved 7 l9 t" i# K# R; |, s+ M &Name, // Array of names to get IDs for6 d/ Y* V6 T+ F% N
1, // # of names in the array) y% Y% c+ a$ c% D" P
LOCALE_SYSTEM_DEFAULT, // System locale/ }6 R, M- Y1 j% @- U; j. x3 x8 }
&pokeID); // Array of IDs to fill on output. h! N" \7 U7 L8 F
3 |+ [5 G0 Y% J2 k" P if (hr) 6 f0 q9 f+ |' v { 3 U. x2 h& }$ J- m5 S ]: a MessageBox ("Get Poke Unsuccessful");+ j& }1 W1 p- J% D' e* [
return; 9 ]% t) E7 B* o, M3 T' t3 P }' t% [4 K1 f& Z; p! j
. H# t; [% l7 I6 @5 A6 u( R' a/**************************传递数据给extend**************************************/% j( {9 S8 n% K
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); 2 @" I. Y- y3 L8 T! t9 x6 ? D- y - v( e* N# ]& j6 ?+ t valueStr = SysAllocString((WCHAR *) L"1232");( k, M) L5 ^. {( J
VariantInit(&pokeVariant[0]); 7 r' a3 \+ t( J$ I5 L pokeVariant[0].vt = VT_BSTR;! e/ W$ b% l- E! J+ G' B% b9 N
pokeVariant[0].bstrVal = valueStr; : l5 a' b' d$ [% l& Q7 i0 C: d% \7 X# I$ T" ]3 ~6 z" f
itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");1 f& V2 h+ V- j- d6 G' B
VariantInit(&pokeVariant[1]); % h: _ r( e( f
pokeVariant[1].vt = VT_BSTR; 9 f) F" J" R6 {9 o0 y' Z9 o pokeVariant[1].bstrVal = itemStr; - h0 f* ~) G) z' {* t6 B. d! n * K8 Y$ J: \( g& M topicStr = SysAllocString((WCHAR *) L"system");+ g4 S F' A/ p3 W0 E) T8 z! B: {
VariantInit(&pokeVariant[2]); ; ~0 E1 w- G: Q, u7 }9 n
pokeVariant[2].vt = VT_BSTR;+ y0 {+ y4 u) T% r, o
pokeVariant[2].bstrVal = topicStr; 6 c2 H% Y y$ M J # K d; G# K( s- n# L# K8 @& y9 h: k// Set the DISPPARAMS structure that holds the variant.- \* D. {7 e9 n4 F% ^$ i
" o5 h. ]$ @! D1 M5 M& L% R dp.rgvarg = pokeVariant; 1 h9 V+ b/ R' `) r6 T) x8 e2 { dp.cArgs = 3; . M( m$ k- ^4 a% M; }! G8 Z dp.rgdispidNamedArgs = NULL; . d3 i% I! D4 ` dp.cNamedArgs = 0; 2 M1 M7 q' W' d+ G0 H' t) C; P9 j ' ]8 E) N/ ~; x9 l/ V7 k// Call IDispatch::Invoke() 1 D9 l8 w% E+ Y" E* L8 Y7 \% k ]5 R C* Z9 q; Q+ g% ?) e
hr = m_pDisp->Invoke(; d; i2 o* u6 R0 p3 p" h- c
pokeID, 7 X' Q" c+ T# {! ?2 E( K/ ~$ I2 n1 s IID_NULL, ) C6 Q, b, P8 z) D LOCALE_SYSTEM_DEFAULT, 4 M6 R% I9 h- s) z0 U$ D, U- o DISPATCH_METHOD,9 c% F( q$ x* U' R5 l- T
&dp,' X4 J. K4 _- J/ q9 ]) Q+ E8 U
NULL,9 N1 N' Y) T+ o1 L% s
&ei, ' H& Q' }( A5 w: A: X6 p9 q( d A &uiErr);7 ~* p/ s2 m4 c6 ^, b) u
% z1 k( W& _1 e- l. Q
SysFreeString(topicStr);' i2 Z; Z' B. b: L
SysFreeString(itemStr); 1 F8 l5 v9 J' Y* l+ U: y SysFreeString(valueStr);( n% C6 n% B9 ]+ v- B