Hello,
Ive a legacy combobox of CBS_DROPDOWN type.
And somehow, user typed value is not getting updated.
I tried to write a small example code in VS2015, where, the event handler doesnot get called, on writting a text to combo box:
Any suggestions on this is very helpful
Ive a legacy combobox of CBS_DROPDOWN type.
And somehow, user typed value is not getting updated.
I tried to write a small example code in VS2015, where, the event handler doesnot get called, on writting a text to combo box:
Any suggestions on this is very helpful
Code:
// MFCApplication3Dlg.h : header file
//
#pragma once
#include "afxwin.h"
// CMFCApplication3Dlg dialog
class CMFCApplication3Dlg : public CDialogEx
{
// Construction
public:
CMFCApplication3Dlg(CWnd* pParent = NULL); // standard constructor
// Dialog Data
#ifdef AFX_DESIGN_TIME
enum { IDD = IDD_MFCAPPLICATION3_DIALOG };
#endif
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
// Implementation
protected:
HICON m_hIcon;
// Generated message map functions
virtual BOOL OnInitDialog();
afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
afx_msg void OnPaint();
afx_msg HCURSOR OnQueryDragIcon();
DECLARE_MESSAGE_MAP()
public:
CComboBox m_sim;
CString m_val;
afx_msg void OnCbnSelchangeCombo1();
afx_msg void OnCbnSelchangeCombo2();
};
.cpp
// MFCApplication3Dlg.cpp : implementation file
//
#include "stdafx.h"
#include "MFCApplication3.h"
#include "MFCApplication3Dlg.h"
#include "afxdialogex.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
// CAboutDlg dialog used for App About
class CAboutDlg : public CDialogEx
{
public:
CAboutDlg();
// Dialog Data
#ifdef AFX_DESIGN_TIME
enum { IDD = IDD_ABOUTBOX };
#endif
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
// Implementation
protected:
DECLARE_MESSAGE_MAP()
};
CAboutDlg::CAboutDlg() : CDialogEx(IDD_ABOUTBOX)
{
}
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialogEx::DoDataExchange(pDX);
}
BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)
END_MESSAGE_MAP()
// CMFCApplication3Dlg dialog
CMFCApplication3Dlg::CMFCApplication3Dlg(CWnd* pParent /*=NULL*/)
: CDialogEx(IDD_MFCAPPLICATION3_DIALOG, pParent)
{
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CMFCApplication3Dlg::DoDataExchange(CDataExchange* pDX)
{
CDialogEx::DoDataExchange(pDX);
DDX_Control(pDX, IDC_COMBO1, m_sim);
}
BEGIN_MESSAGE_MAP(CMFCApplication3Dlg, CDialogEx)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_CBN_SELCHANGE(IDC_COMBO1, &CMFCApplication3Dlg::OnCbnSelchangeCombo1)
ON_CBN_SELCHANGE(IDC_COMBO2, &CMFCApplication3Dlg::OnCbnSelchangeCombo2)
END_MESSAGE_MAP()
// CMFCApplication3Dlg message handlers
BOOL CMFCApplication3Dlg::OnInitDialog()
{
CDialogEx::OnInitDialog();
// Add "About..." menu item to system menu.
// IDM_ABOUTBOX must be in the system command range.
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
ASSERT(IDM_ABOUTBOX < 0xF000);
CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != NULL)
{
BOOL bNameValid;
CString strAboutMenu;
bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
ASSERT(bNameValid);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
}
// Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon
// TODO: Add extra initialization here
return TRUE; // return TRUE unless you set the focus to a control
}
void CMFCApplication3Dlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialogEx::OnSysCommand(nID, lParam);
}
}
// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.
void CMFCApplication3Dlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting
SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);
// Center icon in client rectangle
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;
// Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialogEx::OnPaint();
}
}
// The system calls this function to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CMFCApplication3Dlg::OnQueryDragIcon()
{
return static_cast<HCURSOR>(m_hIcon);
}
void CMFCApplication3Dlg::OnCbnSelchangeCombo1()
{
int item = m_sim.GetCurSel();
int sel = m_sim.GetCurSel();
if (sel == -1)
{
CString str;
m_sim.GetWindowTextW(str);
}
//if (sel == -1)
//{
// int len = m_sim.GetWindowTextLength() + 1;
// string tp = new char[len];
// m_sim.GetWindowTextA(tp, len);
// sel = m_sim.FindStringExact(-1, tp);
// if (sel == -1)
// {
// sel = wnd.InsertString(0, tp);
// wnd.SetCurSel(sel);
// }
// int cnt;
// while ((cnt = wnd.GetCount()) >= 20)
// wnd.DeleteString(cnt - 1);
//}
else
{
m_sim.GetLBText(m_sim.GetCurSel(), m_val);
UpdateData(FALSE);
}
//if (item != CB_ERR)
//{
// CString text;
// m_sim.GetLBText(item, text);
//}
// TODO: Add your control notification handler code here
}
void CMFCApplication3Dlg::OnCbnSelchangeCombo2()
{
int i = 0;
// TODO: Add your control notification handler code here
}