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： ! W2 Q. [: Q7 N7 qName = (WCHAR *) L"Poke"; ! Q' Z( w$ \- x 7 V9 D; S$ f' F' u
hr = m_pDisp->GetIDsOfNames (' n* j; h/ W; ^# c, d
IID_NULL, // reserved6 `6 B, }) r% S6 P3 @# c
&Name, // Array of names to get IDs for& ]0 P, @+ L6 z' b6 {0 z# a4 S8 h
1, // # of names in the array - n9 R9 u- R/ j7 V% _ LOCALE_SYSTEM_DEFAULT, // System locale9 d$ K; i! n5 w! g' H$ }( M
&pokeID); // Array of IDs to fill on output' [' y, ~) b# t) R ~
+ Y! R P5 v1 ~5 _3 e4 H9 z if (hr) 5 i+ l3 g# O# F } {0 c7 G! m g5 T k0 z
MessageBox ("Get Poke Unsuccessful"); 3 j; ~8 `' t, g3 T+ O! p return; * f; n. g: {9 Z) A$ ]0 C }; L' t$ C4 L: s. X
: x1 G& ], v% C7 l; }+ W
/**************************传递数据给extend**************************************/7 _6 }. m; M! Y5 A
pokeVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *3);5 X, n# F" G: A/ @
& X+ u8 a) ?/ T/ m3 Z1 u: T valueStr = SysAllocString((WCHAR *) L"1232");2 I2 b, t/ p" D
VariantInit(&pokeVariant[0]); + x. O( U9 {' w p, ^) E& | pokeVariant[0].vt = VT_BSTR; 9 x* k: u+ e& q+ s5 p: J pokeVariant[0].bstrVal = valueStr;8 P. u7 Z, n" w) }/ f8 Q. B, d
, i; _+ J( {5 Q, B5 k' W itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");0 ~9 f* U1 P, H1 u% R
VariantInit(&pokeVariant[1]); # n% O2 G. s$ w" c, I# h
pokeVariant[1].vt = VT_BSTR; : ^2 i" u8 g+ r; i pokeVariant[1].bstrVal = itemStr; 4 N' s4 Z, S# j8 A5 T 9 W& V+ J/ r# L" Y; V1 m/ M topicStr = SysAllocString((WCHAR *) L"system"); $ P, |" W. [7 ], D VariantInit(&pokeVariant[2]); 4 d; f i- w( W b4 a1 S( h/ u9 E% I pokeVariant[2].vt = VT_BSTR; ) Z. k. \1 G8 q7 q0 Z7 ^ pokeVariant[2].bstrVal = topicStr;4 S5 l! j, H7 f# U& H! O# h! \
; f+ y6 c s/ o6 }// Set the DISPPARAMS structure that holds the variant.1 T$ x; w0 v4 q6 ]# \: b; x
Z! p5 f- W% ^ O- W
dp.rgvarg = pokeVariant;2 ~5 Q b: V3 L
dp.cArgs = 3; % |0 R2 \9 H% S8 _) B dp.rgdispidNamedArgs = NULL;4 @1 o N# p3 z' s' Q# s
dp.cNamedArgs = 0; 8 \3 i, Y+ K9 }" x; d" m4 R; L) f1 L/ B a+ m6 z( d
// Call IDispatch::Invoke() 2 ~0 s: U8 l5 h1 O, |3 q4 G : ~8 n& O: r# b* A/ ? hr = m_pDisp->Invoke() _6 [# T3 \6 ]! k6 ^ ?+ p
pokeID,) y8 B+ A- q b* u. k- g
IID_NULL, 0 O* @' o8 W( h1 W- G3 H! r LOCALE_SYSTEM_DEFAULT, 1 T( j# v" Q, K. i DISPATCH_METHOD, 4 y! x, M4 o! R0 n7 l# z9 o1 a &dp, ' g) M# [$ [, A NULL, * J6 g" E9 i/ F7 @ &ei,8 p5 Y' v0 j8 K) V
&uiErr); ( j9 G, H; b9 h' G% k7 G. _4 A4 p# X; v" x& h
SysFreeString(topicStr); , T9 `( z/ ?2 q8 z/ e9 @ SysFreeString(itemStr); 6 Z! S' r$ [/ v/ w& d! A C/ U5 h SysFreeString(valueStr); * M2 J5 b! G& X0 O4 l& ^ 3 w8 s0 c0 |2 C/ ^0 f% S- o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？？？, i8 f7 [/ K5 S5 N$ ?
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？？？？ , O: h v/ U# k% F: |) X& g. m2 ?* D
3 U+ s2 z, \# l% Z" F7 ?# [' C2.这是request的程序& k7 {( H1 I% n. g9 w$ W. Y9 x
// Request a value from Extend + t! c* e" \7 Q8 |// 9 T! G* k/ D% ?3 E// Initialize the variant that will hold the BSTR. Set the variant's % X* K; ?; ]; `& \// type flag to indicate the fact that this variant holds a BSTR. Place the$ F0 h( a5 b! V
// BSTR into the variant structure.1 n3 ^7 W e( ^3 {# d6 t4 y
8 K( ~% q5 O* C) ^' _
requestVariant = (VARIANTARG *)malloc(sizeof(VARIANTARG) *2);" }& y# z. G2 X. l6 n# m1 x& {6 A. z
. m" N* m) | @9 o9 ~$ e itemStr = SysAllocString((WCHAR *) L"global0:#0:0:0:0:0");! T* Y2 g: Y0 A
VariantInit(&requestVariant[0]); 4 B# H+ E$ L0 X2 J
requestVariant[0].vt = VT_BSTR;* B1 l b$ |+ C
requestVariant[0].bstrVal = itemStr; ' z4 e. q+ B6 t( i5 D" R3 |& ^ 4 w/ k; V* C6 f, E topicStr = SysAllocString((WCHAR *) L"system"); 9 `7 P( ^ [& ? VariantInit(&requestVariant[1]); 7 J6 p' ?# n, H, T4 M8 r requestVariant[1].vt = VT_BSTR; Z9 N( W/ m$ ?
requestVariant[1].bstrVal = topicStr; 5 Z) p+ L+ O u2 R" g : F/ p2 Z' E3 f: V// Set the DISPPARAMS structure that holds the variant. 7 R2 e# ]0 {/ f& U" Q: f" q0 w* |8 x3 p2 ?' K# h x
dp2.rgvarg = requestVariant; * z# m9 g6 s* @1 V dp2.cArgs = 2;# s& z$ n( d- ~, X4 X" Y# J
dp2.rgdispidNamedArgs = NULL;5 W8 J. }0 `# c6 t. h
dp2.cNamedArgs = 0;7 x8 I# e3 F0 H. F- r# z
6 b9 _9 n) `7 H) g# K/ C var.vt = VT_EMPTY;1 h; }* F" c! r5 X6 f3 _1 ^
, D9 C5 j; D# ]/ h0 S+ C. u
// Call IDispatch::Invoke() % s8 W! |5 B7 I$ r4 M6 H; l O/ ?$ F/ d b8 K
hr = m_pDisp->Invoke( 7 h0 j( o, Y3 O7 f4 p requestID," z/ ~3 E+ h# h. A
IID_NULL,7 ~# \$ y( N- S- W1 p
LOCALE_SYSTEM_DEFAULT,3 S& F% J/ i) O, O
DISPATCH_METHOD, + m- B% K7 D2 r# d* U- k! L) i &dp2,1 W8 }, T$ a: P' }* e
&var, + L( ^0 ?2 {. ^) Z& i# }, m &ei, b9 p; m3 @# A; b9 R
&uiErr);6 w/ f7 Q+ s$ w3 Z8 k
3 }* M Q9 ]3 w) R- x" N
SysFreeString(topicStr); 6 c) h7 e( w2 D% i0 X* g SysFreeString(itemStr);- \ O0 b0 V ?+ L
请问该程序是获得extend里面的哪个值？ 4 S! R# j, e* ]; y _如果我希望获得extend程序里面的某个变量的数值，那个c++程序应该如何实现？？？？
发表于 2008-11-25 19:37:03
