fmain.cpp

多线程 http 下载 c++builder代码

//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "fMain.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TfmMain *fmMain;

//---------------------------------------------------------------------------
__fastcall TfmMain::TfmMain(TComponent* Owner)
    : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TfmMain::ButtonCloseClick(TObject *Sender)
{
    Close();    
}
//---------------------------------------------------------------------------
void __fastcall TfmMain::ButtonBrowseClick(TObject *Sender)
{
    if(SaveDialog1->Execute())
    {
        EditSaveFile->Text=SaveDialog1->FileName;
    }
}
//---------------------------------------------------------------------------

void __fastcall TfmMain::ButtonStartClick(TObject *Sender)
{
    HttpGetEx1->URL=EditURL->Text;
    HttpGetEx1->FileName=EditSaveFile->Text;
    Memo0->Lines->Add("下载线程数");
    Memo0->Lines->Add(IntToStr(HttpGetEx1->ThreadCount));
    HttpGetEx1->StartGet();
}
//---------------------------------------------------------------------------

void __fastcall TfmMain::HttpGetEx1GetFileSize(TObject *Sender, int FileSize)
{
    AnsiString Msg = "文件大小：";
    Msg = Msg + IntToStr(FileSize);
    Memo0->Lines->Add(Msg);
}
//---------------------------------------------------------------------------

void __fastcall TfmMain::HttpGetEx1Progress(TObject *Sender, int Position,
      int Max, int Index)
{
    switch(Index)
    {
        case 0:
        {
            ProgressBar0->Position=Position;
            ProgressBar0->Max=Max;
            LabelPosition0->Caption=IntToStr(Position);
            LabelTotal0->Caption=IntToStr(Max);
            break;
        }
        case 1:
        {
            ProgressBar1->Position=Position;
            ProgressBar1->Max=Max;
            LabelPosition1->Caption=IntToStr(Position);
            LabelTotal1->Caption=IntToStr(Max);
            break;
        }
        case 2:
        {
            ProgressBar2->Position=Position;
            ProgressBar2->Max=Max;
            LabelPosition2->Caption=IntToStr(Position);
            LabelTotal2->Caption=IntToStr(Max);
            break;
        }
        case 3:
        {
            ProgressBar3->Position=Position;
            ProgressBar3->Max=Max;
            LabelPosition3->Caption=IntToStr(Position);
            LabelTotal3->Caption=IntToStr(Max);
            break;
        }
    }
}
//---------------------------------------------------------------------------

void __fastcall TfmMain::HttpGetEx1StatusText(TObject *Sender,
      AnsiString Msg, int Index)
{
    switch(Index)
    {
        case 0:
        {
            Memo0->Lines->Add(Msg);
            break;
        }
        case 1:
        {
            Memo1->Lines->Add(Msg);
            break;
        }
        case 2:
        {
            Memo2->Lines->Add(Msg);
            break;
        }
        case 3:
        {
            Memo3->Lines->Add(Msg);
            break;
        }
    }
}
//---------------------------------------------------------------------------


void __fastcall TfmMain::HttpGetEx1Complete(TObject *Sender)
{
    Memo0->Lines->Add("下载完成");
}
//---------------------------------------------------------------------------