請問各位 如何在client連線時,偵測server是否己在等待連線~如server未連線則出現server未連線的訊息 因我在連線時,如果server端未先連線,而client先連線會出現錯誤訊息~ 希望有範例說明~ 發表人 - kenbcb 於 2003/08/04 18:17:22

引言: 請問各位 如何在client連線時,偵測server是否己在等待連線~如server未連線則出現server未連線的訊息 因我在連線時,如果server端未先連線,而client先連線會出現錯誤訊息~ 希望有範例說明~

kenbcb 你好: 請參考以下的範例程式碼 (以 TClientSocket 元件為例) < class="code"> void __fastcall TForm1::Button1Click(TObject *Sender) { ClientSocket1->Address="192.168.1.1"; ClientSocket1->Port=4000; ClientSocket1->Open(); // Do something........ ClientSocket1->Close(); } void __fastcall TForm1::ClientSocket1Error(TObject *Sender, TCustomWinSocket *Socket, TErrorEvent ErrorEvent, int &ErrorCode) { switch(ErrorEvent) { case eeGeneral: ShowMessage("The socket received an error message that does not fit \ninto any of the following categories."); break; case eeSend: ShowMessage("An error occurred when trying to write to the socket \nconnection."); break; case eeReceive: ShowMessage("An error occurred when trying to read from the socket \nconnection."); break; case eeConnect: ShowMessage("A connection request that was already accepted could not \nbe completed."); break; case eeDisconnect: ShowMessage("An error occurred when trying to close a connection."); break; case eeAccept: ShowMessage("A problem occurred when trying to accept a client \nconnection request."); break; default: ShowMessage("Unknow error."); break; } ErrorCode=0; } 備註: 相關的說明，建議你參考 BCB Help 中有關「TClientSocket」「TErrorEvent」 -- Enjoy Researching & Developing --