MfcToolkit/controls/MyComboBoxEdit.cpp

// Copyright (c) Wiesław Šoltés. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.

#include "StdAfx.h"
#include "MyComboBoxEdit.h"

namespace controls
{
    IMPLEMENT_DYNAMIC(CMyComboBoxEdit, CEdit)

        CMyComboBoxEdit::CMyComboBoxEdit()
    {
        this->szToolTipText = _T("");
        this->bHaveToolTipText = false;
    }

    CMyComboBoxEdit::~CMyComboBoxEdit()
    {

    }

    void CMyComboBoxEdit::PreSubclassWindow()
    {
        CEdit::PreSubclassWindow();

        EnableToolTips(TRUE);
    }

    BEGIN_MESSAGE_MAP(CMyComboBoxEdit, CEdit)
        ON_NOTIFY_EX_RANGE(TTN_NEEDTEXTW, 0, 0xFFFF, OnToolTipText)
        ON_NOTIFY_EX_RANGE(TTN_NEEDTEXTA, 0, 0xFFFF, OnToolTipText)
        ON_CONTROL_REFLECT(EN_CHANGE, &CMyComboBoxEdit::OnEnChange)
    END_MESSAGE_MAP()

    void CMyComboBoxEdit::SetTooltipText(CString szText)
    {
        this->szToolTipText = szText;
        this->bHaveToolTipText = true;
    }

    CString CMyComboBoxEdit::GetTooltipText()
    {
        return this->szToolTipText;
    }

    void CMyComboBoxEdit::DelTooltipText()
    {
        this->bHaveToolTipText = false;
        this->szToolTipText = _T("");
    }

    bool CMyComboBoxEdit::HaveTooltipText()
    {
        return this->bHaveToolTipText;
    }

    INT_PTR CMyComboBoxEdit::OnToolHitTest(CPoint point, TOOLINFO* pTI) const
    {
        CRect rcTemp;
        GetClientRect(rcTemp);
        if (!rcTemp.PtInRect(point))
            return -1;

        pTI->hwnd = m_hWnd;
        pTI->uId = 1;
        pTI->lpszText = LPSTR_TEXTCALLBACK;
        pTI->rect = rcTemp;

        return pTI->uId;
        // return CEdit::OnToolHitTest(point, pTI);
    }

    BOOL CMyComboBoxEdit::OnToolTipText(UINT id, NMHDR *pNMHDR, LRESULT *pResult)
    {
        TOOLTIPTEXTA *pTTTA = (TOOLTIPTEXTA *)pNMHDR;
        TOOLTIPTEXTW *pTTTW = (TOOLTIPTEXTW *)pNMHDR;
        static CString szTipText;
        UINT_PTR nID = pNMHDR->idFrom;

        if (nID == 0)
            return FALSE;

        if (this->HaveTooltipText())
            szTipText = this->GetTooltipText();
        else
            GetWindowText(szTipText);

        // length of tooltips buffer
        static const int nMyTooltipsWidth = 4096;

        // check the tooltip text length
        if (szTipText.GetLength() > nMyTooltipsWidth)
            return FALSE;

        ::SendMessage(pNMHDR->hwndFrom, TTM_SETMAXTIPWIDTH, 0, (LPARAM)nMyTooltipsWidth);

        TCHAR szBuff[nMyTooltipsWidth] = _T("");
        _stprintf_s(szBuff, _T("%s"), (LPCTSTR)szTipText);

#ifndef _UNICODE
        if (pNMHDR->code == TTN_NEEDTEXTA)
        {
            pTTTA->lpszText = szBuff;
        }
        else
        {
            wchar_t szTmpBuff[nMyTooltipsWidth];
            _mbstowcsz(szTmpBuff, szBuff, szTipText.GetLength() + 1);
            pTTTW->lpszText = szTmpBuff;
        }
#else
        if (pNMHDR->code == TTN_NEEDTEXTA)
        {
            char szTmpBuff[nMyTooltipsWidth];
            _wcstombsz(szTmpBuff, szBuff, szTipText.GetLength() + 1);
            pTTTA->lpszText = szTmpBuff;
        }
        else
        {
            pTTTW->lpszText = szBuff;
        }
#endif

        *pResult = 0;
        return TRUE;
    }

    void CMyComboBoxEdit::OnEnChange()
    {
        CString szText;
        this->GetWindowText(szText);
        this->GetParent()->GetParent()->SendMessage(WM_MY_EN_CHANGE, (WPARAM)&szText, 0);
    }
}