2021-07-22背

保存为jpg

	CString strFileName;          //如果用户没有指定文件扩展名，则为其添加一个

	CString strExtension,path;
	
	CClientDC dc(this);
	CRect rect;
	GetClientRect(&rect);
    
	HBITMAP hbitmap = CreateCompatibleBitmap(dc, rect.right - rect.left, rect.bottom - rect.top);
	HDC hdc = CreateCompatibleDC(dc); //创建兼容DC，以便将图像保存为不同的格式
	HBITMAP hOldMap = (HBITMAP)SelectObject(hdc, hbitmap);


	BitBlt(hdc, 0, 0, rect.right - rect.left, rect.bottom - rect.top, dc, 0, 0, SRCCOPY);
	
	CImage ig;
	ig.Attach(hbitmap);
	CFileDialog dlg(NULL, _T(".jpg"), _T("paint.jpg"), NULL);
	dlg.DoModal();
	strFileName = dlg.m_ofn.lpstrFile;
	path = strFileName;
	ig.Save(path);
	ig.Detach();
	MessageBox(_T("图像保存成功"), _T("提示"));

矩阵运算

//矩阵求逆 
int MatrixInv(int n, double *a)
{
	int *is, *js, i, j, k, l, u, v;
	double d, p;
	is = (int *)malloc(n * sizeof(int));
	js = (int *)malloc(n * sizeof(int));
	for (k = 0; k <= n - 1; k++)
	{
		d = 0.0;
		for (i = k; i <= n - 1; i++)
			for (j = k; j <= n - 1; j++)
			{
				l = i*n + j; p = fabs(a[l]);
				if (p>d) { d = p; is[k] = i; js[k] = j; }
			}
		if (d + 1.0 == 1.0)
		{
			free(is); free(js); printf("err**not inv\n");
			return(0);
		}
		if (is[k] != k)
			for (j = 0; j <= n - 1; j++)
			{
				u = k*n + j; v = is[k] * n + j;
				p = a[u]; a[u] = a[v]; a[v] = p;
			}
		if (js[k] != k)
			for (i = 0; i <= n - 1; i++)
			{
				u = i*n + k; v = i*n + js[k];
				p = a[u]; a[u] = a[v]; a[v] = p;
			}
		l = k*n + k;
		a[l] = 1.0 / a[l];
		for (j = 0; j <= n - 1; j++)
			if (j != k)
			{
				u = k*n + j; a[u] = a[u] * a[l];
			}
		for (i = 0; i <= n - 1; i++)
			if (i != k)
				for (j = 0; j <= n - 1; j++)
					if (j != k)
					{
						u = i*n + j;
						a[u] = a[u] - a[i*n + k] * a[k*n + j];
					}
		for (i = 0; i <= n - 1; i++)
			if (i != k)
			{
				u = i*n + k; a[u] = -a[u] * a[l];
			}
	}
	for (k = n - 1; k >= 0; k--)
	{
		if (js[k] != k)
			for (j = 0; j <= n - 1; j++)
			{
				u = k*n + j; v = js[k] * n + j;
				p = a[u]; a[u] = a[v]; a[v] = p;
			}
		if (is[k] != k)
			for (i = 0; i <= n - 1; i++)
			{
				u = i*n + k; v = i*n + is[k];
				p = a[u]; a[u] = a[v]; a[v] = p;
			}
	}
	free(is); free(js);
	return(1);
}

//矩阵求积
void MatrixMul(double *a, double *b, int m, int n, int k, double *c)
{
	int i,j,l,u;
	for (i=0; i<=m-1; i++)
		for (j=0; j<=k-1; j++)
		{ u=i*k+j; c[u]=0.0;
	for (l=0; l<=n-1; l++)
		c[u]=c[u]+a[i*n+l]*b[l*k+j];
	}
	return;
}

//矩阵转置
void MatrixTra(int m, int n, double *A, double *AT)
{
	int i, j;
	for (i = 0; i < m; i++)
		for (j = 0; j < n; j++)
			AT[j * m + i] = A[i * n + j];
}

//矩阵求和
void MatrixSum(int Am, int An, int Bm, int Bn, double *A, double *B, double *R)
{
	int r = Am;
	int c = An;
	int n = r * c, i;

	if (Am != Bm || An != Bn) {
		printf("[matrix_sum] Error: mismatched dimensions\n");
		return;
	}

	for (i = 0; i < n; i++) {
		R[i] = A[i] + B[i];
	}
}

//矩阵求差 R = A - B
void MatrixDiff(int Am, int An, int Bm, int Bn, double *A, double *B, double *R)
{
	int r = Am;
	int c = An;
	int n = r * c, i;

	if (Am != Bm || An != Bn) {
		printf("[matrix_sum] Error: mismatched dimensions\n");
		return;
	}

	for (i = 0; i < n; i++) {
		R[i] = A[i] - B[i];
	}
}

dxf

void Chart::LineDXF(FILE *fp,double x, double y, double x1, double y1)//刻度线
{
	fprintf(fp, "0 \nLINE\n");
	fprintf(fp, "8 \n0\n");
	fprintf(fp, "62 \n1\n");
	fprintf(fp, "10 \n%f\n20 \n%f\n11 \n%f\n21 \n%f\n",
		x,y,x1,y1);
}
void Chart::CircleDXF(FILE *fp,double x,double y, double radius)//圆盘
{
	fprintf(fp, "0 \nCIRCLE\n");
	fprintf(fp, "8 \n0\n");
	fprintf(fp, "62 \n1\n");
	fprintf(fp, "10 \n%f\n20 \n%f\n40 \n%f\n",
		x, y, radius);//圆心和半径
}

void Chart::OnBnClickedOk()
{
	// TODO: 在此添加控件通知处理程序代码
	CDialogEx::OnOK();

	FILE *fp;
	fp = fopen("save.dxf", "w");
	if (fp == NULL)
	{
		printf("Can not open this file !\n");
		return;
	}

	fprintf(fp, "0\nSECTION\n");
	fprintf(fp, "2\nENTITIES\n");
	
	for (int i = 0; i < sou.p_data.pt2.size(); i++)
	{
		CircleDXF(fp, (-sou.p_data.pt2[i].old_x - 1950000) / 31.25 + 120 , 540 - (sou.p_data.pt2[i].old_y - 4480000) / 31.25 , 10);
	}
	

	LineDXF(fp, 120, 10,120,540);
	LineDXF(fp, 120, 540, 720, 540);
	LineDXF(fp, 117, 13, 120, 10);
	LineDXF(fp, 120, 10, 123, 13);
	LineDXF(fp, 717, 537, 720, 540);
	LineDXF(fp, 720, 540, 717, 543);

	for (int i = 0; i < 8; i++)
	{
		LineDXF(fp, 120 + 80 * i, 540, 120 + 80 * i, 530);
	}
	
	for (int i = 0; i < 7; i++)
	{
		LineDXF(fp, 120, 540 - 80 * i, 130, 540 - 80 * i);
	}
	fprintf(fp, "0 \nENDSEC\n");
	fprintf(fp, "0 \nEOF");
	fclose(fp);
	MessageBox(_T("散点图保存成功(.dxf)"), _T("提示"));

}

保存txt

CString str(_T(""));
		GetDlgItemText(IDC_EDIT1, str);
		try
		{
			CFile fp;
			fp.Open(_T("坐标转化计算报告.txt"), CFile::modeWrite | CFile::modeCreate | CFile::modeNoTruncate, NULL);
			int len = WideCharToMultiByte(CP_ACP, 0, str, -1, NULL, 0, NULL, NULL);
			char *line = new char[len + 1];
			WideCharToMultiByte(CP_ACP, 0, str, -1, line, len, NULL, NULL);
			fp.Write(line, strlen(line));
			fp.Close();
			MessageBox(_T("计算报告保存成功"), _T("提示"), MB_ICONINFORMATION);
		}
		catch (CFileException*e)
		{
			e->ReportError();
			e->Delete();
		}

#include 
#pragma warning(disable:4995)
CDaoDatabase  m_daoDB;
CString strDB, str1;
CFileDialog dlgDB(FALSE, _T(".mdb"), _T("TIN.mdb"), NULL);
if (IDOK == dlgDB.DoModal())
	{
		strDB = dlgDB.m_ofn.lpstrFile;
	}
//strDB = _T("TIN.mdb");
str1 = _T("CREATE TABLE 计算报告(ID AUTOINCREMENT PRIMARY KEY,1 VARCHAR(20),2 VARCHAR(20),3 VARCHAR(20),4 VARCHAR(20),5 VARCHAR(20))");
m_daoDB.Create(strDB, dbLangGeneral, dbVersion40);//创建数据库;
m_daoDB.Open(strDB);//打开数据库;
m_daoDB.Execute(str1.GetBuffer());//执行SQL语句;
CString strSql;
CString str11 = _T("前20个三角形");
CString s1, s2, s3, s4, s5, s = _T("");
strSql.Empty();
strSql = L"insert into 计算报告(1,2,3,4,5) values('" + str11 + L"','" + _T("") + L"','" + _T("") + L"','" + _T("") + L"','" + _T("") + L"')";
m_daoDB.Execute(strSql.GetBuffer());

m_list.DeleteAllItems();
	for (int i = 0; i < 7; i++)
	{
		m_list.DeleteColumn(i);
	}
	DWORD dw = m_list.GetExtendedStyle();
	dw |= LVS_EX_FULLROWSELECT;
	dw |= LVS_EX_GRIDLINES;
	m_list.SetExtendedStyle(dw);
	m_list.InsertColumn(0, _T(""), LVCFMT_CENTER, 120);
	m_list.InsertColumn(1, _T("B"), LVCFMT_CENTER, 120);
	m_list.InsertColumn(2, _T("L"), LVCFMT_CENTER, 120);
	m_list.InsertColumn(3, _T("X"), LVCFMT_CENTER, 120);
	m_list.InsertColumn(4, _T("Y"), LVCFMT_CENTER, 120);
	for (int i = 0; i < (T.n - 5); i++)
	{
		CString id;
		id = (T.p[i].Num).c_str();
		m_list.InsertItem(5 + i, id, LVCFMT_CENTER);
		CString d, m, s, str;
		T.p[i].rad2angle(T.p[i].rad_B1);
		d.Format(_T("%.0f"), T.p[i].dd);
		m.Format(_T("%.0f"), T.p[i].mm);
		s.Format(_T("%.4f"), T.p[i].ss);
		str = d + _T("°") + m + _T("′") + s + _T("′′");
		m_list.SetItemText(i, 1, str);