24小时热门版块排行榜

返回列表

leafmavis

木虫 (文坛精英)

应助: 119 (高中生)
金币: 7200.5
散金: 15392
红花: 13
帖子: 15284
在线: 343小时
虫号: 627785
注册: 2008-10-16
专业: 认知科学

[求助] 请教线程数据传递问题

请教大家一个问题：用C++ builder 6.0编程，实现在一定的时长内反复播放两种声音（两声之间的时间间隔和播放总时长可变），而且可以随时暂停和继续。现在的程序能实现反复播放、暂停和继续，但是两声之间没有时间间隔，也即时间间隔的数据没有传递到线程中（播放时长还未编入到线程中），请大家帮忙看看，问题出在哪里？谢谢
附上4个文件(因还要实现其他功能，所以包含较多的头文件) 和图1个
1、Unit1.cpp
//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#include <stdio.h>
#include <vcl.h>
#pragma hdrstop
#include <mmsystem.h>
#include "Unit1.h"
#include <stdlib.h>
#include <algorithm.h>
using namespace std;
FILE *outf; //定义一个文件指针，用于随机顺序的输出
#pragma package(smart_init)
#pragma resource "*.dfm"
//---------------------------------------------------------------------------

TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
outf=fopen("C:\\Documents and Settings\\Administrator\\桌面\\P300 play order.txt","w+"

; //打开txt文件
  Button2->Enabled=false;
  Button3->Enabled=false;
  Button4->Enabled=true;

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

void __fastcall TForm1::Button1Click(TObject *Sender)
{
  Button1->Enabled=false;
  Button2->Enabled=true;
  const float interval1=Edit1->Text.ToDouble();  //时间间隔
  int interval=interval1*1000; //the unit is ms
  const float duration1=Edit2->Text.ToDouble();  //播放总时长（分钟）
  int duration=duration1*60; //the unit is s
  if(thread1==NULL)
{
   thread1=new TMyThread(false,interval,duration); //创建线程对象实例
}
  thread1->Resume(); //单击后才启动线程
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button2Click(TObject *Sender)
{
if(thread1!=NULL)  thread1->Suspend();
Button2->Enabled=false;
Button3->Enabled=true;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button3Click(TObject *Sender)
{
thread1->Resume();
Button2->Enabled=true;
Button3->Enabled=false;
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button4Click(TObject *Sender)
{
Form1->Close();
}
//---------------------------------------------------------------------------

2、Unit1.h
#ifndef Unit1H
#define Unit1H
//---------------------------------------------------------------------------
#include <Classes.hpp>
#include <Controls.hpp>
#include <StdCtrls.hpp>
#include <Forms.hpp>
#include "Unit2.h"
//---------------------------------------------------------------------------
class TForm1 : public TForm
{
__published: // IDE-managed Components
      TEdit *Edit1;
      TEdit *Edit2;
      TButton *Button1;
      TButton *Button2;
      TButton *Button3;
      TButton *Button4;
      TLabel *Label1;
      TLabel *Label2;
      void __fastcall Button1Click(TObject *Sender);
      void __fastcall Button2Click(TObject *Sender);
      void __fastcall Button3Click(TObject *Sender);
      void __fastcall Button4Click(TObject *Sender);
private: // User declarations
TMyThread *thread1;
public: // User declarations
      __fastcall TForm1(TComponent* Owner);
};
//---------------------------------------------------------------------------
extern PACKAGE TForm1 *Form1;
//---------------------------------------------------------------------------
#endif

3、Unit2.cpp
#include <vcl.h>
#pragma hdrstop
#include "Unit2.h"
#include <stdlib.h>
#include <mmsystem.h>
#include <algorithm.h>
#pragma package(smart_init)
TDateTime startTime, currentTime;

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

// Important: Methods and properties of objects in VCL can only be
// used in a method called using Synchronize, for example:
//
//    Synchronize(UpdateCaption);
//
// where UpdateCaption could look like:
//
//    void __fastcall TMyThread::UpdateCaption()
//    {
//       Form1->Caption = "Updated in a thread";
//    }
//---------------------------------------------------------------------------

__fastcall TMyThread::TMyThread(bool CreateSuspended,int interIN, int duraIN)
      : TThread(CreateSuspended)
{  int inter = interIN;
int duration = duraIN;
}

//---------------------------------------------------------------------------
void __fastcall TMyThread::Execute()
{
//---- Place thread code here ----

for(int i=0;i<200;i++)
{ PlaySound("inside.wav",NULL,SND_FILENAME|SND_SYNC);
   Sleep(inter);
   PlaySound("outside.wav",NULL,SND_FILENAME|SND_SYNC);
   Sleep(inter);
}

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

4、Unit2.h
#ifndef Unit2H
#define Unit2H
//---------------------------------------------------------------------------
#include <Classes.hpp>
//---------------------------------------------------------------------------
class TMyThread : public TThread
{
private:

protected:
      void __fastcall Execute();

public:
      int inter,duration;
      __fastcall TMyThread(bool CreateSuspended, int interIN, int duraIN); //注意：修改了默认参数);
};
//---------------------------------------------------------------------------
#endif