字体下划线按钮

 

#include "stdafx.h"
#include "UnderLineTextButton.h"


IMPLEMENT_DYNAMIC(CUnderLineTextButton, CButton)
CUnderLineTextButton::CUnderLineTextButton()
{
    m_bgColor = RGB(13, 17, 23);
    m_fontColor = RGB(255, 255, 255);
    m_hoverFontColor = RGB(255, 255, 255);
    m_disableFontColor = RGB(170, 170, 170);
    m_pressDownFontColor = RGB(34, 186, 251);
    m_ButtonState = UnderLineButtonState::State_Normal;
    m_bTracking = FALSE;
}


CUnderLineTextButton::~CUnderLineTextButton()
{
}

BEGIN_MESSAGE_MAP(CUnderLineTextButton, CButton)
    ON_WM_MOUSEMOVE()
    ON_WM_MOUSELEAVE()
    ON_WM_MOUSEHOVER()
    ON_WM_ENABLE()
    ON_WM_SETCURSOR()
    ON_WM_LBUTTONDOWN()
    ON_WM_LBUTTONUP()
END_MESSAGE_MAP()

void CUnderLineTextButton::OnMouseMove(UINT nFlags, CPoint point)
{
    // TODO:  在此添加消息处理程序代码和/或调用默认值
    if (!m_bTracking)
    {
        TRACKMOUSEEVENT tme;
        tme.cbSize = sizeof(tme);
        tme.hwndTrack = m_hWnd;
        tme.dwFlags = TME_LEAVE | TME_HOVER;
        tme.dwHoverTime = 1;//光标停在按钮上，改变状态的时间，以1毫秒为单位
        m_bTracking = _TrackMouseEvent(&tme);
    }    
    CButton::OnMouseMove(nFlags, point);

}


void CUnderLineTextButton::OnMouseLeave()
{
    m_ButtonState = UnderLineButtonState::State_Normal;
    m_bTracking = FALSE;
    CButton::OnMouseLeave();
    Invalidate();
}


void CUnderLineTextButton::OnMouseHover(UINT nFlags, CPoint point)
{
    m_ButtonState = UnderLineButtonState::State_Hover;
    m_bTracking = FALSE;
    CButton::OnMouseHover(nFlags, point);
    Invalidate();
}




void CUnderLineTextButton::PreSubclassWindow()
{
    // TODO:  在此添加专用代码和/或调用基类

  /*  CButton::PreSubclassWindow();*/
    ModifyStyle(0, BS_OWNERDRAW);
    CFont* pFont = GetFont();
    LOGFONT logFont;
    pFont->GetLogFont(&logFont);
    logFont.lfHeight = 24;
    m_normalFont.CreateFontIndirect(&logFont);

    //创建下划线字体
    logFont.lfUnderline = TRUE;
    m_underlineFont.CreateFontIndirect(&logFont);

    CButton::PreSubclassWindow();
}

void CUnderLineTextButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{

    CDC *pDC = CDC::FromHandle(lpDrawItemStruct->hDC);
    GetWindowText(m_strText);
    int nSavedDC = pDC->SaveDC();
    CRect buttonRect = lpDrawItemStruct->rcItem;
    CBrush Brush;
    Brush.CreateSolidBrush(m_bgColor);
    pDC->FillRect(buttonRect, &Brush);

    switch (m_ButtonState)
    {
    case UnderLineButtonState::State_Hover:
        pDC->SelectObject(&m_underlineFont);
        pDC->SetTextColor(m_hoverFontColor);
        break;
    case UnderLineButtonState::State_Disable:
        pDC->SelectObject(&m_normalFont);
        pDC->SetTextColor(m_disableFontColor);
        break;
    case UnderLineButtonState::State_PressDown:
        pDC->SelectObject(&m_underlineFont);
        pDC->SetTextColor(m_pressDownFontColor);
        break;
    default:
        pDC->SelectObject(&m_normalFont);
        pDC->SetTextColor(m_fontColor);
        break;
    }



    pDC->SetBkMode(TRANSPARENT);
    pDC->DrawText(m_strText, buttonRect, DT_SINGLELINE | DT_CENTER
        | DT_VCENTER);
    pDC->RestoreDC(nSavedDC);

}



void CUnderLineTextButton::OnEnable(BOOL bEnable)
{
    if (!bEnable)
    {
        m_ButtonState = UnderLineButtonState::State_Disable;
    }
    else
    {
        m_ButtonState = UnderLineButtonState::State_Normal;
    }
    CButton::OnEnable(bEnable);
    Invalidate();
}


BOOL CUnderLineTextButton::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message)
{
    ::SetCursor(::LoadCursor(NULL, IDC_HAND));
    return TRUE;
}


void CUnderLineTextButton::OnLButtonDown(UINT nFlags, CPoint point)
{
    m_ButtonState = UnderLineButtonState::State_PressDown;

    CButton::OnLButtonDown(nFlags, point);
}


void CUnderLineTextButton::OnLButtonUp(UINT nFlags, CPoint point)
{
    CButton::OnLButtonUp(nFlags, point);
}

 

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