C / C++ / MFC

// stdafx.h
#define WM_MYMESSAGE (WM_USER+1)

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// MyThread.h

class CMyThread : public CWinThread
{
	DECLARE_DYNCREATE(CMyThread)
.
.
.
public:
	unsigned int f0ll, f1ll, f2ll, f3ll;
	unsigned int f0ul, f1ul, f2ul, f3ul;

public:
	afx_msg void MyMessageHandler(WPARAM, LPARAM);

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// MyThread.cpp
.
.
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afx_msg void CMyThread::MyMessageHandler(WPARAM, LPARAM)
{
    // I have to add an item to ListCtrl here
}
BEGIN_MESSAGE_MAP(CMyThread, CWinThread)
	ON_THREAD_MESSAGE(WM_MYMESSAGE, MyMessageHandler)
END_MESSAGE_MAP()

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// IPMDlg.cpp
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void CIPMDlg::OnBnClickedBrefreshdevices()
{
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.
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pRefreshThread = AfxBeginThread(RUNTIME_CLASS(CMyThread));
pRefreshThread->PostThreadMessage(WM_MYMESSAGE, 0, 0);
}

CREATE TABLE Scores ( 
	StudentCode Text(9) NOT NULL,
	CourseCode Text(7) NOT NULL,
	SemesterCode Text(3) NOT NULL,
	Score Double
);

CREATE TABLE Courses ( 
	CourseCode Text(7) NOT NULL,
	CourseName Memo NOT NULL,
	CourseTypeID Integer NOT NULL,
	CourseCategoryID Integer NOT NULL
);

ALTER TABLE Scores ADD CONSTRAINT PK_Grades 
	PRIMARY KEY (StudentCode, CourseCode, SemesterCode);

ALTER TABLE Courses ADD CONSTRAINT PK_Courses 
	PRIMARY KEY (CourseCode);

ALTER TABLE Courses
	ADD CONSTRAINT UQ_Courses_CourseCode UNIQUE (CourseCode);

ALTER TABLE Scores ADD CONSTRAINT FK_Scores_Courses 
	FOREIGN KEY (CourseCode) REFERENCES Courses (CourseCode)
ON UPDATE CASCADE;