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: 4 I4 n, j3 h1 |6 B$ NName = (WCHAR *) L"Poke"; # c: Q$ D3 f) k) i/ y6 ~: C . [8 I5 C/ [5 ~8 z; b2 O/ V hr = m_pDisp->GetIDsOfNames ( ' E+ j% ]$ R) ^$ u8 f IID_NULL, // reserved7 D: |- r3 T9 K5 m9 `, M
&Name, // Array of names to get IDs for * e1 H, c3 L C' {/ ^ u 1, // # of names in the array4 d' |# n2 U' v
LOCALE_SYSTEM_DEFAULT, // System locale7 G F) E$ L1 H/ H. h) |
&pokeID); // Array of IDs to fill on output0 k8 B$ ]2 O, X9 ^ t8 `
5 r/ a! P ?2 l" t& ?, P) V0 ^6 J if (hr) % D: r& p; Q( l7 [6 _/ ~ { + r2 h& J; |# i- t: y$ W9 j2 @ k MessageBox ("Get Poke Unsuccessful"); $ D# o7 k" U @ x& F$ Z. x return;3 y5 W+ b7 X8 U# c% g" V
} ! t" C0 ^9 k9 F& { + P% p9 U9 H- X% v/ y/**************************传递数据给extend**************************************/ 2 k# y& O' x0 p+ y pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);% M& r; r9 ]9 K7 {* x( ]8 E
$ m8 V) [4 O1 D' C5 }: d valueStr = SysAllocString((WCHAR *) L"1232");. x. F: O; |' @2 a4 W1 g- h' A
VariantInit(&pokeVariant[0]); + z; v3 c- ^1 F pokeVariant[0].vt = VT_BSTR;. G5 N1 J# {) d2 R9 X2 X3 J" {$ Z
pokeVariant[0].bstrVal = valueStr; / j0 m, d5 q6 [& M7 | & y" z* g5 i6 z$ y1 j/ b" w itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");; S8 _: |; j# I. O5 H" _+ F& |
VariantInit(&pokeVariant[1]); 8 o( U* ]# W3 N+ ?$ P/ X- H pokeVariant[1].vt = VT_BSTR;; e. k- {& B G/ g1 _' Q6 I9 j( v
pokeVariant[1].bstrVal = itemStr; D" [. m5 x! d- O* B: d: a N# H0 E/ o/ N0 R
topicStr = SysAllocString((WCHAR *) L"system");( ^7 w- O. \3 o6 s
VariantInit(&pokeVariant[2]); , q- p# \2 J9 ~9 U- _# }% ? pokeVariant[2].vt = VT_BSTR; 6 K, f. Q! U3 T9 W* y( w% I, d pokeVariant[2].bstrVal = topicStr; - _: U; T& Y/ b2 C1 k 3 P! ~" S2 ?1 g4 k' o' ?// Set the DISPPARAMS structure that holds the variant. * a% I( H; D" `% f) e1 e: T" _ ( E: T9 W+ N+ i% s( I% f dp.rgvarg = pokeVariant;, B+ A$ D5 l' O. z) t+ i& N
dp.cArgs = 3;# N0 |3 S7 ^* o; f( d0 P$ y
dp.rgdispidNamedArgs = NULL; ( t1 ?5 U$ c/ f! r$ s( M" f2 r dp.cNamedArgs = 0; + p8 o) _* K6 q' `2 V/ ~9 K) J; C& Q$ i. z5 l
// Call IDispatch::Invoke() y; j+ z: E5 _6 `
0 v' s& {( S0 l2 @- f
hr = m_pDisp->Invoke( # U4 s" U% z0 P L pokeID, 0 d H+ K2 j$ K# ^ IID_NULL, & [# y) Z" t( d' `! P6 L: @9 z LOCALE_SYSTEM_DEFAULT,( E/ B$ t" S3 j: }0 }
DISPATCH_METHOD, a: N! R2 v% N( Z &dp,1 y: v/ D) J- J; ]' K$ ?( g2 E
NULL, . v5 |$ Q4 L* F& m2 P &ei,4 w) _8 _, J1 H( S
&uiErr);+ ?$ E I: J# J3 C: M: {) g& G
2 |# _4 m8 V8 a/ G
SysFreeString(topicStr); # b; |6 ^2 u% f; }: a2 W% v SysFreeString(itemStr);4 A0 [5 S0 z6 t8 g7 a Z0 z" [
SysFreeString(valueStr);, a0 _2 F" _1 K" P4 }; y