第二步,编制VServer.exe文件。新建Delphi工程,将窗体的Name属性设为“Server”。加入TNMUDP控件,Name属性设为“SUDP”;LocalPort属性设为“2222”,让控件SUDP监视主控机的2222端口,当有数据发送到该口时,触发控件SUDP的OnDataReceived事件;RemotePort属性设为“1111”,当控件SUDP发送数据时,将数据发到受控机的1111口。加入控件Image1,Align属性设为“alClient”;加入控件Button1,Caption属性设为“截屏”;加入控件Label1,Caption属性设为“左:上:右:下”;加入控件Edit1,Text属性设为“0:0:100:100”;加入控件Label2,Caption属性设为“受控机IP地址”;加入控件Edit2,Text属性设为“127.0.0.1”;
在implementation后面加入变量定义
const BufSize=2048;
var
RsltStream,TmpStream:TMemoryStream;
为Server的OnCreate事件添加代码:
procedure TServer.FormCreate(Sender: TObject);
begin
RsltStream:=TMemoryStream.Create;
TmpStream:=TMemoryStream.Create;
end;
为Client的OnDestroy事件添加代码:
procedure TServer.FormDestroy(Sender: TObject);
begin
RsltStream.Free;
TmpStream.Free;
end;
为控件Button1的OnClick事件添加代码:
procedure TServer.Button1Click(Sender: TObject);
var ReqCode:array[0..29] of char;ReqCodeStr:string;
begin
ReqCodeStr:='show'+Edit1.Text;
StrpCopy(ReqCode,ReqCodeStr);
TmpStream.Clear;
RsltStream.Clear;
SUDP.RemoteHost:=Edit2.Text;
SUDP.SendBuffer(ReqCode,30);
end;
为控件SUDP的OnDataReceived事件添加代码:
procedure TServer.SUDPDataReceived(Sender: TComponent;
NumberBytes: Integer; FromIP: String);
var ReqCode:array[0..29] of char;ReqCodeStr:string;
begin
ReqCodeStr:='show'+Edit1.text;
StrpCopy(ReqCode,ReqCodeStr);
SUDP.ReadStream(TmpStream);
RsltStream.CopyFrom(TmpStream,NumberBytes);
if NumberBytes< BufSize then { 数据已读完 }
begin
RsltStream.Position:=0;
Image1.Picture.Bitmap.LoadFromStream(RsltStream);
TmpStream.Clear;
RsltStream.Clear;
end
else
begin
TmpStream.Clear;
ReqCode:='show';
SUDP.RemoteHost:=Edit2.Text;
SUDP.SendBuffer(ReqCode,30);
end;
end
自己参考吧!兄弟!我顺便说一句:说话别这末不礼貌