How to change edit control box with button

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Hi,
I am doing calculator program by using dialog based VC++/MFC application. In a diaolg box, added a edit text control and a push button. So I need to change/append the text of edit control box in that dialog when I pressed the push button in dialog window. To display the text am using Setsel() and ReplaceSel() methos in ButtonClicked method, but it's not working.

Show the relevant portion of your code and relevent artical.
If you always want to change all the text, use SetWindowText.

basu

Posted 22-Jun-10 21:45pm

basu 009

Updated 22-Jun-10 22:06pm

Moak

v2

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Selva K · Answer 1 · 2011-11-13T23:25:00

void operator += (LPCSTR str)
{
	CString CurrText;
        GetWindowText (CurrText);
        if(CurrText!="0")
            CurrText += str;
        else
           CurrText = str;
        SetWindowText (CurrText);
}

void CCalciDlg::OnBnClickedCbutton0()
{
	
	if(eqflg==TRUE)
	{
		SetDlgItemText(IDCRESULT,_T("0"));
		eqflg=FALSE;
	}
	resu += "0";
	
}
void CCalciDlg::OnBnClickedCbutton1()
{
	if(eqflg==TRUE)
	{
		SetDlgItemText(IDCRESULT,_T("0"));
		eqflg=FALSE;
	}
	resu += "1";
}
void CCalciDlg::OnBnClickedCbutton2()
{
	if(eqflg==TRUE)
	{
		SetDlgItemText(IDCRESULT,_T("0"));
		eqflg=FALSE;
	}
	resu += "2";
}
void CCalciDlg::OnBnClickedCbutton3()
{
	if(eqflg==TRUE)
	{
		SetDlgItemText(IDCRESULT,_T("0"));
		eqflg=FALSE;
	}
	resu += "3";
}
void CCalciDlg::OnBnClickedCbutton4()
{
	if(eqflg==TRUE)
	{
		SetDlgItemText(IDCRESULT,_T("0"));
		eqflg=FALSE;
	}
	resu += "4";
}
void CCalciDlg::OnBnClickedCbutton5()
{
	if(eqflg==TRUE)
	{
		SetDlgItemText(IDCRESULT,_T("0"));
		eqflg=FALSE;
	}
	resu += "5";
}
void CCalciDlg::OnBnClickedCbutton6()
{
	if(eqflg==TRUE)
	{
		SetDlgItemText(IDCRESULT,_T("0"));
		eqflg=FALSE;
	}
	resu += "6";
}
void CCalciDlg::OnBnClickedCbutton7()
{
	if(eqflg==TRUE)
	{
		SetDlgItemText(IDCRESULT,_T("0"));
		eqflg=FALSE;
	}
	resu += "7";
}
void CCalciDlg::OnBnClickedCbutton8()
{
	if(eqflg==TRUE)
	{
		SetDlgItemText(IDCRESULT,_T("0"));
		eqflg=FALSE;
	}
	resu += "8";
}
void CCalciDlg::OnBnClickedCbutton9()
{
	if(eqflg==TRUE)
	{
		SetDlgItemText(IDCRESULT,_T("0"));
		eqflg=FALSE;
	}
	resu += "9";
}
void CCalciDlg::OnBnClickedCbuttonpoint()
{
	CString msg;
	GetDlgItemText(IDCRESULT,msg);
	if(flg==TRUE)
	{
		msg=msg+'.';
		SetDlgItemText(IDCRESULT,msg);
		flg=FALSE;
	}
	pctrl.EnableWindow(FALSE);
	//SetProperty(IDCBUTTONPOINT,WS_VISIBLE,FALSE);
	
}
void CCalciDlg::OnBnClickedCbuttondiv()
{
	num=0;
	opflg=4;
	UpdateData(TRUE);
	num=num1;
	SetDlgItemText(IDCRESULT,_T("0"));
}
void CCalciDlg::OnBnClickedCbuttonmul()
{
	num=0;
	opflg=3;
	UpdateData(TRUE);
	num=num1;
	SetDlgItemText(IDCRESULT,_T("0"));
}
void CCalciDlg::OnBnClickedCbuttonplus()
{
	num=0;
	opflg=1;
	UpdateData(TRUE);
	num=num1;
	SetDlgItemText(IDCRESULT,_T("0"));
}
void CCalciDlg::OnBnClickedCbuttonminus()
{
	num=0;
	opflg=2;
	UpdateData(TRUE);
	num=num1;
	SetDlgItemText(IDCRESULT,_T("0"));
}
void CCalciDlg::OnBnClickedCbuttonequal()
{
	eqflg=TRUE;
	
	if(num1!=0)
	{
		UpdateData(TRUE);
		switch(opflg)
		{
		case 1:
			num=num+num1;
			break;
		case 2:
			num=num-num1;
			break;
		case 3:
			num=num*num1;
			break;
		case 4:
			num=num/num1;
			break;
		case 0:
			AfxMessageBox(_T("Please Select The Operation"),MB_OK);
			break;
		}
		CString str;
		str.Format(_T("%.2f"), num);
		SetDlgItemText(IDCRESULT,str);
		resu.SetSel(0,-1);
	}
	else
	{
		AfxMessageBox(_T("Enter The Second Value"),MB_OK);
	}
}