خطأ في منشئ C++ CreateThread()

Question

مرحبًا، أحاول إنشاء برنامج بلغة C++ يقوم بإنشاء موجات مثلثية ومربعة وجيبية.أقوم بإدخال التردد والسعة وما إلى ذلك، ويتم حساب متوسط ​​الموجة.ويمكنني اختيار الموجة التي تولدها عن طريق تحديد زر الاختيار.

هذا نظام في الوقت الفعلي، لذا، إذا تم رسم موجة وإذا اخترت زر راديو متوافقًا مع نوع آخر من الموجات، فيجب أن تتغير في الوقت الفعلي.

الخطأ هو هذا:

[خطأ C++] FormularioPrincipal.cpp(171):E2297 لا يمكن استخدام "هذا" إلا ضمن وظيفة العضو

يحدث ذلك على السطر الذي أقوم فيه بإنشاء الموضوع.هل يستطيع احد مساعدتي؟

شكرًا!

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

#include <vcl.h>
#include <io.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include <iomanip>
#include <limits>
#include <complex>
#include <math.h>
#pragma hdrstop

#include "FormularioPrincipal.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
HANDLE thread1;
HANDLE thread2;
HANDLE thread3;
HANDLE thread4;
HANDLE thread5;
HANDLE Mutex;

int pipe[2];
double freq;
double per;
double freqAngular;
double pi;
double taxaAmostragem;
double tempofinal;
double deslocamento;

//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
}
//---------------------------------------------------------------------------
DWORD WINAPI geraSinalSenoide(void *parametro){

    TForm1 *FormularioPrincipal = (TForm1*) parametro;
    int i;
    double valorGerado;
    per = StrToFloat(FormularioPrincipal->Edit2->Text);
    freq = 1/per;
    FormularioPrincipal->Edit3->Text = freq;
    pi = 3.141592654;
    taxaAmostragem = 20;
    tempofinal = 1000;
    freqAngular = (2 * pi)/per;
    double amp = StrToFloat(FormularioPrincipal->Edit1->Text);

            while(true){
                    for (double time=0; time<=freq; time = time + (1 / taxaAmostragem)){

                            WaitForSingleObject(Mutex, INFINITE);
                            ReleaseMutex(Mutex);
                        deslocamento = ( sin(freqAngular * time)  * amp);
                            write(pipe[1], &deslocamento, sizeof(int));
                        FormularioPrincipal->Series1->AddXY(per, deslocamento, "", clRed);
                            per = per + StrToFloat(FormularioPrincipal->Edit2->Text);
                            //FormularioPrincipal->Label7->Caption = time;

                    }
                     Sleep(1000);
                     return 0;
            }


};

DWORD WINAPI geraSinalQuadrado(void *parametro){

    TForm1 *FormularioPrincipal = (TForm1*) parametro;
    int i;
    int x=0;
    float valorGerado;
    double per = StrToFloat(FormularioPrincipal->Edit6->Text);
    freq = 1/per;
    FormularioPrincipal->Edit2->Text = freq;
    while(true){
            for(i=0; i<freq;i++){
            WaitForSingleObject(Mutex, INFINITE);
            ReleaseMutex(Mutex);

                        valorGerado = rand() % (FormularioPrincipal->Edit1->Text);
                        write(pipe[1], &valorGerado, sizeof(int));
                        FormularioPrincipal->Series1->AddXY(per, valorGerado, "", clRed);
                        per = per + StrToFloat(FormularioPrincipal->Edit6->Text);
                        FormularioPrincipal->Series1->AddXY(per, valorGerado, "", clRed);
            }    Sleep(1000);
    }
}

DWORD WINAPI geraSinalTriangular(void *parametro){

     TForm1 *FormularioPrincipal = (TForm1*) parametro;
    int i;
    int x=0;
    float valorGerado;
    double per = StrToFloat(FormularioPrincipal->Edit6->Text);
    freq = 1/per;
    FormularioPrincipal->Edit2->Text = freq;
    while(true){
            for(i=0; i<freq;i++){
            WaitForSingleObject(Mutex, INFINITE);
            ReleaseMutex(Mutex);

                        valorGerado = rand() % (FormularioPrincipal->Edit1->Text);
                        write(pipe[1], &valorGerado, sizeof(int));
                        FormularioPrincipal->Series1->AddXY(per, valorGerado, "", clRed);
                        per = per + StrToFloat(FormularioPrincipal->Edit6->Text);

            }    Sleep(1000);
    }

};

DWORD WINAPI processaNumeros(void *parametros){

   TForm1* FormularioPrincipal = (TForm1*) parametros;
             int dados[10];
             int qtdDadosLidosBuffer=0;
             float media = 0;
             float soma =0;
             float dif= 0;
             while(true){
                       soma  = 0;
                       dif = 0;
                       int i;
                       for(i=0; i<10; i++)//ele vai pegar de 10 em 10 numeros e calcular a media
                       {
                          int qtdBytesLidos;
                          //ler os dados do pipe
                          qtdBytesLidos = read(pipe[0], &dados[i], sizeof(int));
                          if   (qtdBytesLidos == 0)
                             break;
                       }
                       qtdDadosLidosBuffer = i-1;
                         ReleaseMutex(Mutex);
                         for(int i=0; i<qtdDadosLidosBuffer;i++){
                                soma += dados[i];
                                }
                         if(qtdDadosLidosBuffer != 0)
                            soma/=qtdDadosLidosBuffer;//calcula a media


                         for(int i=0; i<qtdDadosLidosBuffer;i++){
                             dif = dados[i] - soma;
                             dif+=dif;
                         }
                         FormularioPrincipal->Edit4->Text = soma;
                         FormularioPrincipal->Edit5->Text = dif;
                         FormularioPrincipal->Edit6->Text = sqrt(dif);
                         Sleep(1000);//tbm espera 1 segundo
             }
};

DWORD WINAPI main(void *parametro){

    Mutex = CreateMutex(NULL, false, NULL);
    TForm1 *FormularioPrincipal = (TForm1*) parametro;
    DWORD prioridade;
    prioridade = THREAD_PRIORITY_NORMAL;

    if((FormularioPrincipal->RadioButton1->Checked == true) && (FormularioPrincipal->RadioButton2->Checked             == false) && (FormularioPrincipal->RadioButton3->Checked == false)){
            DWORD thread1ID;
            thread1 = CreateThread(NULL, 0, geraSinalSenoide, this, CREATE_SUSPENDED, &thread1ID);
            DWORD thread4ID;
            thread4 = CreateThread(NULL, 0, processaNumeros, this, CREATE_SUSPENDED, &thread4ID);

            GetExitCodeThread(thread2, &exitCode);
            TerminateThread(thread2, exitCode);
            GetExitCodeThread(thread3, &exitCode);
            TerminateThread(thread3, exitCode);

            SetThreadPriority(&thread1ID, prioridade);
    }
    else if((FormularioPrincipal->RadioButton1->Checked == false) && (FormularioPrincipal->RadioButton2->Checked == true) && (FormularioPrincipal->RadioButton3->Checked == false)){
            DWORD thread2ID;
            thread2 = CreateThread(NULL, 0, geraSinalTriangular, this, CREATE_SUSPENDED, &thread2ID);
            DWORD thread4ID;
            thread4 = CreateThread(NULL, 0, processaNumeros, this, CREATE_SUSPENDED, &thread4ID);

            GetExitCodeThread(thread1, &exitCode);
            TerminateThread(thread1, exitCode);
            GetExitCodeThread(thread3, &exitCode);
            TerminateThread(thread3, exitCode);

            SetThreadPriority(&thread2ID, prioridade);
    }
    else{
            DWORD thread3ID;
            thread3 = CreateThread(NULL, 0, geraSinalQuadrado, this, CREATE_SUSPENDED, &thread3ID);
            DWORD thread4ID;
            thread4 = CreateThread(NULL, 0, processaNumeros, this, CREATE_SUSPENDED, &thread4ID);

            GetExitCodeThread(thread1, &exitCode);
            TerminateThread(thread1, exitCode);
            GetExitCodeThread(thread2, &exitCode);
            TerminateThread(thread2, exitCode);

            SetThreadPriority(&thread3ID, prioridade);

    }

    if(_pipe(pipe, sizeof(int)*500, O_BINARY) == -1){//cria o pipe
            MessageBox(NULL, "Erro ao criar pipe", "Aviso", 0);
            return;
   }



}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
DWORD prioridade;
prioridade = THREAD_PRIORITY_NORMAL;

DWORD thread5ID;
thread5 = CreateThread(NULL, 0, main, this, CREATE_SUSPENDED, &thread5ID);
SetThreadPriority(&thread5ID, prioridade);
ResumeThread(thread1);
ResumeThread(thread2);
ResumeThread(thread3);
ResumeThread(thread4);
ResumeThread(thread5);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button2Click(TObject *Sender)
{
    unsigned long exitCode;
    GetExitCodeThread(thread1, &exitCode);
    TerminateThread(thread1, exitCode);
    GetExitCodeThread(thread2, &exitCode);
    TerminateThread(thread2, exitCode);
    GetExitCodeThread(thread3, &exitCode);
    TerminateThread(thread3, exitCode);
    GetExitCodeThread(thread4, &exitCode);
    TerminateThread(thread4, exitCode);
    GetExitCodeThread(thread5, &exitCode);
    TerminateThread(thread5, exitCode);
}
//---------------------------------------------------------------------------

Answer 1

في DWORD WINAPI main(void *parametro) يمر parametro بدلاً من this ل CreateThread نظرًا لأنك (كما يقول الخطأ) في وظيفة مجانية ولست في وظيفة عضو.