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C++ Builder XE4, 10.2 Tokyo >TIdTCPClientを使った送信例

Last updated at Posted at 2017-02-13
動作環境
C++ Builder XE4
  Windows 7 Pro: 送信元
  Windows 10 Pro: 送信先

RAD Studio 10.2 Tokyo Update 2 (追記: 2017/12/28)

関連 http://qiita.com/7of9/items/afd179c6c27a349f4ec6

TClientSocketでのテキスト送信実装をTIdTCPClient使用に変更しようとしている。

上記リンクと同じような処理は
http://qiita.com/7of9/items/51bd31318c6e1332adbf
のコードを参考にして、以下のようにしてみた。

Unit1.cpp
//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
	: TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::debugB_tcpClick(TObject *Sender)
{
	char zbuf[20] = {0};

	IdTCPClient1->Host = "192.168.2.7";
	IdTCPClient1->Port = 2000;
	IdTCPClient1->Connect();

	for(int loop=0; loop < 3; loop++) {
		Application->ProcessMessages();
		Sleep(300);
	}

	strcpy(zbuf, "TEST");
	IdTCPClient1->IOHandler->WriteLn(zbuf);

    //
	Application->ProcessMessages();
	Sleep(300);

	// if (IdTCPClient1->IOHandler->CheckForDataOnSource(1000)) {
	//     受信処理
	// }

	IdTCPClient1->IOHandler->InputBuffer->Clear();

	IdTCPClient1->Disconnect();

}
//---------------------------------------------------------------------------

TClientSocket使用と同じように通信できた。

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