C / C++ / MFC

sashoalm wrote:

Use the HtmlHelp function instead of ShellExecute, it takes care of that.

const char* help_file_path = "help.chm";
HWND hwnd = AfxGetMainWnd()->GetSafeHwnd();
const char* topic = NULL;
HtmlHelp(hwnd, help_file_path, HH_DISPLAY_TOPIC, (DWORD) topic);

Paresh Chitte wrote:

Please refer here[^]

fantasy1215 wrote:

MUST I substitute _beginthread to ::AfxBeginThread?

Mark Salsbery
Microsoft MVP - Visual C++

toxcct wrote:

that will hide the Group Box control only, not its content...

<font color="green">/* GroupBoxEx.h
 *
 * Copyright (c) 2006 by toxcct. All rights reserved.
 * Consult your license regarding permissions and restrictions.
 */</font>
 
<font color="blue">#pragma once
 
#include</font> <MAP>
 
<font color="blue">class</font> CGroupBoxEx : <font color="blue">public</font> CStatic {
    DECLARE_DYNAMIC(CGroupBoxEx)
 
<font color="blue">protected</font>:
    std::map<UINT, BOOL> m_mapChildrenControls;    <font color="green">//Maps a CWnd ID to its original state</font>
    afx_msg <font color="blue">void</font> OnShowWindow(BOOL bShow, UINT nStatus);    <font color="green">//WM_SHOWWINDOW message handler.</font>
    DECLARE_MESSAGE_MAP()
 
<font color="blue">public</font>:
    CGroupBoxEx();
    <font color="blue">virtual</font> ~CGroupBoxEx();
    BOOL InsertNewChild(CWnd* pwndChild);    <font color="green">//Inserts a new CWnd child to the GroupBox</font>
    BOOL RemoveChild(CWnd* pwndChild);       <font color="green">//Removes a Cwnd child of the GroupBox</font>
};

<font color="green">/* GroupBoxEx.cpp
 *
 * Copyright (c) 2006 by toxcct. All rights reserved.
 * Consult your license regarding permissions and restrictions.
 */</font>
 
<font color="blue">#include</font> "stdafx.h"
<font color="blue">#include</font> "GroupBoxEx.h"
 
IMPLEMENT_DYNAMIC(CGroupBoxEx, CStatic)
 
 
CGroupBoxEx::CGroupBoxEx() : CStatic() {
    m_mapChildrenControls.clear();
}
 
CGroupBoxEx::~CGroupBoxEx() {
    m_mapChildrenControls.clear();
}
 
 
BEGIN_MESSAGE_MAP(CGroupBoxEx, CStatic)
    ON_WM_SHOWWINDOW()
END_MESSAGE_MAP()
 
 
<font color="green">/**
 * Inserts a new MFC control into the GroupBox.
 *  When a control is a child of a CGroupBoxEx object, it behaves with the grouping
 *  strategy of the GroupBox.
 */</font>
BOOL CGroupBoxEx::InsertNewChild(CWnd* pwndChild) {
    ASSERT(pwndChild != NULL);
    <font color="blue">if</font> (m_mapChildrenControls.find(pwndChild->GetDlgCtrlID()) != m_mapChildrenControls.end()) {
        <font color="blue">return</font> FALSE;
    }
    BOOL bVisible = pwndChild->IsWindowVisible();
    m_mapChildrenControls[pwndChild->GetDlgCtrlID()] = bVisible
    <font color="blue">if</font> (!this->IsWindowVisible()) {
        pwndChild->ShowWindow(SW_HIDE);
    }
    <font color="blue">return</font> TRUE;
}
 
<font color="green">/**
 * Removes a MFC control from the GroupBox.
 */</font>
BOOL CGroupBoxEx::RemoveChild(CWnd* pwndChild) {
    ASSERT(pwndChild != NULL);
    std::map<UINT, BOOL>::iterator iterChild = m_mapChildrenControls.find(pwndChild->GetDlgCtrlID());
    <font color="blue">if</font> (iterChild == m_mapChildrenControls.end()) {
        <font color="blue">return</font> FALSE;
    }
    <font color="blue">if</font> ((!this->IsWindowVisible()) && (iterChild->second)) {
        pwndChild->ShowWindow(SW_NORMAL);
    }
    m_mapChildrenControls.erase(iterChild);
    <font color="blue">return</font> TRUE;
}
 
/<font color="green">**
 * Event handler of th WM_SHOWWINDOW Windows Message.<BR>
 * When the GroupBox is hidden, any child control previously added is hidden.<BR>
 * When the GroupBox is unhidden, the children controls are restored to the original
 *  state they were in before the group were hidden.
 */</font>
<font color="blue">void</font> CGroupBoxEx::OnShowWindow(BOOL bShow, UINT nStatus) {
    CStatic::OnShowWindow(bShow, nStatus);

    std::map<UINT, BOOL>::iterator iterControls;
    CWnd* pwnd = NULL;
    <font color="blue">if</font> (!bEnable) {
        <font color="blue">for</font> (iterControls = m_mapChildrenControls.begin();
             iterControls != m_mapChildrenControls.end();
             iterControls++) {
            pwnd = this->GetParent()->GetDlgItem(iterControls->first);
            ASSERT(pwnd != NULL);
            iterControls->second = pwnd->IsWindowVisible();
            pwnd->ShowWindow(SW_HIDE);
        }
    }
    <font color="blue">else</font> {
        <font color="blue">for</font> (iterControls = m_mapChildrenControls.begin();
             iterControls != m_mapChildrenControls.end();
             iterControls++) {
            <font color="blue">if</font> (iterControls->second.bEnabled) {
                pwnd = this->GetParent()->GetDlgItem(iterControls->first);
                ASSERT(pwnd != NULL);
                pwnd->ShowWindow(SW_NORMAL);
            }
        }
    }
}