51CTO技术论坛_中国领先的IT技术社区 » C/C++ » 在C++Builder中编写发送图象文件程序

皮皮勒 发表于 2006-8-29 01:05

在C++Builder中编写发送图象文件程序

ICQ能够实现点到点的数据传送，但如果想把一个多媒体图像文件送给另一方，是比较难的。但可以利用C++Builder 5.0 的控件来编写一个用于发送图像的应用程序。
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7d7_-L]9P8T 　　打开C++Builder 5.0 ，新建一个工程，在Form1中添加NMStrm,NMStrmServ，OpenPictureDialog控件，再添；加Button控件3个，Label控件1个，Edit控件 2 个，StatusBar控件1个。#_`M?B%G-[XEHZz

+\9g!m]'G gG 　　首先我们来认识一下NMStrm控件，NMStrmServ控件和OpenPictureDialog控件。NMStrm控件是一个基于TCP/IP的控件，它可以接收数据流，然后通过网络将其发送给服务器。NMStrmServ控件是可以接收从客户端发送来的数据流，服务器只监听TCP/IP 端口，不负责监听UDP端口。OpenPictureDialog控件是用于打开图像文件进行浏览或编辑。 N(E:FrE]9hX*WZ

/kS/k7P"z FK 各种控件的属性设计如下：
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控件名    属性       值
ez&t2[ r
k,YY Form     Caption     发送图像
|kGe j.S(?(y"`0Z Image    Name        Image1
W?C l)|G Button  name=Button1,Caption=发送 tQ-J K7n)U
Button  name=Button2,Caption=显示 x4Op-K)sp+XZ C
Button  name=Button3,Caption=打开 &I
V'j$kd%v4K u,x5p
Label   name=Label1,Caption=远程主机：
LlF"ALY}.lY Edit    name         Edit1
9JkZag Edit    name         Edit2
7mbg4q3b w.n)}B NMStrm  name         NMStrm1
qz5x3A:_b)@ NMStrmServ name      NMStrmServ1 oZ9m{'q ~4Vv
OpenPictureDialog name OpenPictureDialog1 ?B!C$UOn
StatusBar name       StatusBar1 *jUIbxMf,l"?'g#j

&l*KU5p
b 源程序代码如下：
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//“Unit1.h"的源代码
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//---------------------------------------------------------------------------;zV&C0N ib

-@0su zp~b4Z #ifndef Unit1H
gs d-R v&X F@ #define Unit1H_u4E,nKgI0wc6b}
//----------------------------------------- -------------------------------
?6ly"@[yA4Y.R4H X #include
C/U;]%S W,y8byf/P,b #include 5M8F"O3Gx8U
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#include 5y.\Llb"N0K
#include -?z;xKY$l,G`G,Q@
#include
aRW`2mU #include
l}_C l1fl mBn1\ #include
0uz!xZq0?0uvE3k cC.~ #include
$Bou1IHp/GO3p0P%bs #include *o'~2r&nqa
#include
x/mmf{6T(Y r //---------------------------------------------------------------------------1te1} p/jUI1K
class TForm1 : public TFormh1Yj4[4gbu
{
d b}y6] i({1A v __published: // IDE-managed ComponentsCM-a"lMG1e+qB M
TButton *Button1;
5h,ZAc%p3T(S ^ TButton *Button2;:kq\2d Vp3V w
TNMStrm *NMStrm1;
2j.X/r R3M5L TNMStrmServ *NMStrmServ1;
EqzG*aw Nfq TOpenPictureDialog *OpenPictureDialog1;
)DHz/x:d0Q7I TImage *Image1;.r4E,B t;Vm8@
TLabel *Label1;
!k9R6V2Ao
X g TEdit *Edit1;5[5d8Od%w.HC
TButton *Button3;
0_G+f1V5a:\L6g TEdit *Edit2;)R2Yo[-yK
TStatusBar *StatusBar1;"FiJ*HF6i6I,]
void __fastcall Button3Click(TObject *Sender);2\C2EV#l6onXF{*u?_
void __fastcall Button1Click(TObject *Sender);|lM#?nf[A/R7K
void __fastcall Button2Click(TObject *Sender);
Js'n,iD_Zne _ void __fastcall NMStrm1Connect(TObject *Sender);
.J#TZ s#d void __fastcall NMStrm1ConnectionFailed(TObject *Sender);\ f n/Qi:T1I H;v7Y
void __fastcall NMStrm1Disconnect(TObject *Sender);
@$j @C Vt(m*W A void __fastcall NMStrm1HostResolved(TComponent *Sender);
Ht3}!}$cV#c$v void __fastcall NMStrm1MessageSent(TObject *Sender);6nLP%T3P"G2gRP
void __fastcall NMStrm1PacketSent(TObject *Sender); M P;||+R#p
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void __fastcall NMStrm1Status(TComponent *Sender, AnsiString Status);
ox*P6y&jh!j^^ void __fastcall NMStrm1InvalidHost(bool &Handled);"R:LO&G},~
void __fastcall NMStrmServ1ClientContact(TObject *Sender);
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\X p8S void __fastcall NMStrmServ1MSG(TComponent *Sender,#Gv'WP#]j
const AnsiString sFrom, TStream *strm);"v9U}el+dQ5d`
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void __fastcall NMStrmServ1Status(TComponent *Sender,(k Bz2U&['jh%jcY^
AnsiString Status);
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private: // User declarations
`a\v-Su#YK public: // User declarations9o-[B;|&U_2Ji |
__fastcall TForm1(TComponent* Owner);sX/w!UR vL!IQ
};
4T4vm7U&~uyW //---------------------------------------------------------------------------c8t `%p+d6v
extern PACKAGE TForm1 *Form1;p:kj&s!@$X,fY
//---------------------------------------------------------------------------i%IE\%s
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#endif
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$bv*[TK5CBLN,^ //“Unit1.cpp"的源代码hhW5R_LBM

Aw,X_&wa@ //---------------------------------------------------------------------------s
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#include
3tQ#r l7I*E*I5y5GW #pragma hdrstop
8r4V,UCP2z !y(k9O
`{ J
#include "Unit1.h"
M;O`:TK.ah#]S //---------------------------------------------------------------------------4p#zK x
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#pragma package(smart_init)
y#]z*O!iz5TJ} #pragma resource "*.dfm"4G&bo0|)I)wl
TForm1 *Form1;
q'U(O+~Ig&@ m%RB //---------------------------------------------------------------------------
rD:TM/X d:O!?z+c)d __fastcall TForm1::TForm1(TComponent* Owner)
4wE?Y+b;A`]3qC K : TForm(Owner)
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//---------------------------------------------------------------------------4k{&u e+f~!\
//打开文件
6o5tk6W?Dq3^W void __fastcall TForm1::Button3Click(TObject *Sender)
;N9|$KB-Kz/x Dw {B }C)^(Fr%mO:|1B
if (OpenPictureDialog1->Execute()) u Ov)hR ^U
Edit2->Text =OpenPictureDialog1->FileName ;
;jP[0g&gfz L qc-`!s }
3n/BlwA0] //---------------------------------------------------------------------------
Po:y$wgwy8W //发送图像文件f%T5f9VA
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void __fastcall TForm1::Button1Click(TObject *Sender)
+Z#tGj,mO0}`,s {
ZTbA];O-O/V X TFileStream *MyFStream;
n]L4D8Kt#g] MyFStream = new TFileStream(OpenPictureDialog1->FileName, fmOpenRead);
d/cq&uC(m try#r)Vq,f'tM'u j
{ NMStrm1->Host=Edit1->Text; //指定主机名a De`Z/z{7|
NMStrm1->PostIt(MyFStream); //发送的文件W&V4ZYM8pivLk
}e9xZznt/`
catch(...){} B,U AP.|/B1UF3CG
}
5oY]+^#v&Y3H? //---------------------------------------------------------------------------`%]L9o3Ka
//显示图像文件
Gf)a3aE(H2ITn void __fastcall TForm1::Button2Click(TObject *Sender)Y!Q `aqq^nH \'n
{
Bz&e;Cg,d Image1->Picture->LoadFromFile(".\\tmp.bmp");
:\+~#j&kB:eL }-X*o M[%U+@
//---------------------------------------------------------------------------j7_!T/I,O1s8W,w7U
//连接到远程主机
FdWi H"` void __fastcall TForm1::NMStrm1Connect(TObject *Sender)
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StatusBar1->SimpleText = "Connected";
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//---------------------------------------------------------------------------u6c|T$L3u ac0q
//没有连接到主机时产生此事件
CRD0e"g/c void __fastcall TForm1::NMStrm1ConnectionFailed(TObject *Sender)
S7b&|[~G {%d){ CiUQ;Y(e
ShowMessage("无法连接到对方");P'KlB`w+a{
}/An*`.nVj5W9r
//---------------------------------------------------------------------------&pR$eS_p P
//在客户端文件发送到时产生此事件
'O&V_#|.a^`]0nuN void __fastcall TForm1::NMStrm1Disconnect(TObject *Sender)
omy$Tl mgQxq'j {
Q7Go3A3ddK8L if (StatusBar1 != 0)|"cp8O"K4Ow
StatusBar1->SimpleText = "文件发送到了";
%It4g9YT7Tq} }y {'D1Q X
//---------------------------------------------------------------------------
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3zK}r Ym void __fastcall TForm1::NMStrm1HostResolved(TComponent *Sender) Rc&ql^*FdH
{)TT a.h&w!^#j
StatusBar1->SimpleText = "Host Resolved";
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//---------------------------------------------------------------------------
G
E0vG/JZDJH6or3R //当文件发送到对方时产生此事件%Z-zn;Y4L9Y5O
void __fastcall TForm1::NMStrm1MessageSent(TObject *Sender)
r G"qNBi {

Sih;@m#W? _(I:P\G ShowMessage("有文件发送到对方");
[JlyX$p_/Is }
0ZnL5e@tM}yK //---------------------------------------------------------------------------R(tt(y}`
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//数据发送到对方时产生此事件
Z:M k8w,]4AK_ void __fastcall TForm1::NMStrm1PacketSent(TObject *Sender)
zbn MI_ {
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StatusBar1->SimpleText = IntToStr(NMStrm1->BytesRecvd)+" bytes of " HI)|/aL nI
+NMStrm1->BytesTotal+" sent";Gy o O`W
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//---------------------------------------------------------------------------

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5M+\fD@DY void __fastcall TForm1::NMStrm1Status(TComponent *Sender,AnsiString Status)
&t'{|b H2iT\ {
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?:s-g.M if (StatusBar1 != 0)
SK|1R5~@ StatusBar1->SimpleText = Status;8F!@R0WW$Qt|n
}
5\T6C-VM$|
Y //---------------------------------------------------------------------------
Q_"Q{5a6i0k/{ //没有主机名时产生此事件
`+c.cgj%S:| void __fastcall TForm1::NMStrm1InvalidHost(bool &Handled)
5?|le SXts
k {!R*_#A&]D@7b
AnsiString NewHost;
4^ gq:r#?l*_ if (InputQuery("没有主机", "请输入要发送的主机名：", NewHost))q] EiR/a/bg
{
8Ju,[t6zOk NMStrm1->Host = NewHost;V5b@Eo E
Edit1->Text=NewHost;pq$l\l'tK,a
}
^6R7f6T B-I*{6i6s T }
,I2S3]| I}?)c //---------------------------------------------------------------------------$PMH8F)xP\,VP
//表示客户机已连接到服务器了
3oC#W5d(kG void __fastcall TForm1::NMStrmServ1ClientContact(TObject *Sender)q9G!ci"b;B
{`(n J$U*o:Tu
StatusBar1->SimpleText = "Client Contacted"; {b-Z[$R@roa
}:j:ALa7w)N1}
//---------------------------------------------------------------------------
#[G$u|e"y)H //接收客户端发送来的文件
*UZ*Vq6Y"n void __fastcall TForm1::NMStrmServ1MSG(TComponent *Sender,
syJm@Im{#B const AnsiString sFrom, TStream *strm)k#lP*u-C
{
O6A-T%b5v(P8e if (FileExists(".\\tmp.bmp"))
h${:I f]7T DeleteFile(".\\tmp.bmp");
$_kv\%Y TFileStream *MyFStream;b&x j4`aJ_8v*Z
MyFStream = new TFileStream(".\\tmp.bmp", fmCreate);
[b9f9I*f `;z try
l!E:Wv6UG c {
Ho$S3\I4C7U MyFStream->CopyFrom(strm, strm->Size);Z's8[BP u+b
}G"L3o7L ^H&H-ux
catch(...) q8t0c%^T!_Ut U8f
{
2Q6A7l-w-y;f9A2Qv1X }
OV-Z:ms@#lv MyFStream->Free();7d*e\2A
p5?1E|
}vT\d6M7]
//---------------------------------------------------------------------------
jN*H7G8mJ}ry void __fastcall TForm1::NMStrmServ1Status(TComponent *Sender,id#^|DtAV(Ul
AnsiString Status)ARc7{!Qvt Vq'{
{9xl)[8P5fSa
if (StatusBar1 != 0)
d2Z'c8Wg0kA V%A StatusBar1->SimpleText = Status;
vvml:O }9`/x8E.M(B
//---------------------------------------------------------------------------
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1a0H%[|`6M 　　编好代码以后，编译源程序，在两台计算机上运行它就行了，每一方都可以做服务器或工作站，只要对方运行了该程序，都可以向其发送图象文件，也可以在单机上操作，快来试试吧！

yfzj0203 发表于 2008-12-9 19:29

shafa.................

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