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: ! D9 a8 j, K5 }Name = (WCHAR *) L"Poke";9 T0 @8 X; b# E+ @) Z: z) J
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hr = m_pDisp->GetIDsOfNames ( }; l* ?$ O" g n3 y IID_NULL, // reserved ) C4 j; Y2 \. A7 z! U! j &Name, // Array of names to get IDs for j( n {8 y# Y8 i% p5 i. |9 g
1, // # of names in the array 9 y7 m1 v7 Q4 U: @7 H: v: y LOCALE_SYSTEM_DEFAULT, // System locale0 x3 J. R' Y3 h5 ]" H. A% u+ w
&pokeID); // Array of IDs to fill on output' j; [0 M$ u Z+ I
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if (hr) 8 D h* O0 g" Z% m! Y; M { , P4 ?/ S. C9 C5 F7 _6 c MessageBox ("Get Poke Unsuccessful"); $ H }( j3 ]+ X! G return; M- B. f) g( Y
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# i. g$ D5 q {! X/**************************传递数据给extend**************************************/ 8 g" J1 m2 b! y$ G9 X; v1 O7 T pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3); * g6 u; B; {. X% w$ z. K7 o) o4 t" O 6 \$ T" Q# n# u$ W valueStr = SysAllocString((WCHAR *) L"1232"); L# M$ Z' U7 s1 v8 F5 y, R VariantInit(&pokeVariant[0]); 6 ~& `, N: i9 C- _. M& t4 y pokeVariant[0].vt = VT_BSTR; / E% z: v# i$ B. K3 @# [0 r2 [ pokeVariant[0].bstrVal = valueStr;& b/ Z4 q5 X& K. F: X a
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itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");' L2 a8 k* W U
VariantInit(&pokeVariant[1]); ! F% n% @: a# w6 p& f$ s
pokeVariant[1].vt = VT_BSTR;* w, J. L4 y! f& M! c
pokeVariant[1].bstrVal = itemStr;2 {" g! W: v) M4 x0 F# [! J% y7 ~% r
7 ~9 @* ]7 S3 G7 j7 [' S1 O3 ]8 E topicStr = SysAllocString((WCHAR *) L"system"); : C: s- Z3 c0 _, F VariantInit(&pokeVariant[2]); % p' S' X" t! A$ D+ h7 F( N pokeVariant[2].vt = VT_BSTR; 3 H9 f) P O0 J# j* @6 P pokeVariant[2].bstrVal = topicStr; , ~9 h& p, Y) H2 n1 E, u7 w5 s. H+ ?9 x" ]5 }) Y0 L
// Set the DISPPARAMS structure that holds the variant.6 X9 X7 _& @! ~* A W6 Q8 o
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dp.rgvarg = pokeVariant;/ H) b) y( F0 }
dp.cArgs = 3;1 f% w, k4 C* @2 Q
dp.rgdispidNamedArgs = NULL; , u+ E ^+ o+ G3 x* `" T dp.cNamedArgs = 0;" ^4 s3 E/ m2 D# q* \
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// Call IDispatch::Invoke() 4 O i" |& n6 k8 m0 { " R( u1 D$ { I. f! x hr = m_pDisp->Invoke( d: \* T/ f( c0 ]$ f2 q* l7 @! s1 f pokeID, ' `2 o$ U7 q% h D: a IID_NULL,' b% d1 o7 `' Y( }: z
LOCALE_SYSTEM_DEFAULT,- `" ]6 E, s3 k v' U7 ~
DISPATCH_METHOD, 1 ~- M* b9 h% p t( k$ g5 a &dp, ' {4 `6 T s2 u9 r NULL, " G7 q) W% _" E& `' Y &ei,! ]" X8 y& j5 z( U8 U$ q/ j
&uiErr);2 E8 b {7 d( L9 P* d0 j
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SysFreeString(topicStr);2 ^. W6 i6 x3 z& a" ^
SysFreeString(itemStr);9 h+ ~! I/ T2 u
SysFreeString(valueStr);& V) K+ \9 e% D _# W/ F0 W8 G