封装按钮

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我是靠谱客的博主陶醉往事，最近开发中收集的这篇文章主要介绍封装按钮，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

// SkinButton.cpp : 实现文件
//

#include "stdafx.h"
#include "project.h"
#include "SkinButton.h"

// SkinButton

IMPLEMENT_DYNAMIC(SkinButton, CButton)

SkinButton::SkinButton()
{
m_bMouseLeave = FALSE;
m_BitmapNormal = NULL;
m_BitmapHot = NULL;
m_BitmapPress = NULL;
m_BitmapDisnable = NULL;
}

SkinButton::~SkinButton()
{
}

BEGIN_MESSAGE_MAP(SkinButton, CButton)
ON_MESSAGE(WM_MOUSELEAVE, OnMouseLeave)
ON_MESSAGE(WM_MOUSEHOVER, OnMouseHover)
ON_WM_MOUSEMOVE()
END_MESSAGE_MAP()

// SkinButton 消息处理程序

LRESULT SkinButton::OnMouseLeave(WPARAM Wparam, LPARAM Lparam)
{
Invalidate();
m_bMouseLeave = FALSE;
return 0;
}

LRESULT SkinButton::OnMouseHover(WPARAM Wparam, LPARAM Lparam)
{
Invalidate();
m_bMouseLeave = TRUE;
return 0;
}

void SkinButton::LoadBitmaps(HBITMAP hLeave, HBITMAP hHonver, HBITMAP hClick, HBITMAP hDisable)
{
m_BitmapNormal = hLeave;
m_BitmapHot = hHonver;
m_BitmapPress = hClick;
m_BitmapDisnable = hDisable;
}

void SkinButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{

// TODO: 添加您的代码以绘制指定项
if ( GetStyle() == WS_VISIBLE )
{
return ;
}
HBITMAP bitmap;

if (lpDrawItemStruct->itemState == ODS_DISABLED)
{
  bitmap = m_BitmapDisnable;
}
else if( lpDrawItemStruct->itemState == ODS_SELECTED)
{
  bitmap = m_BitmapPress;
}
else
{
  if (!m_bMouseLeave)
  {
   bitmap = m_BitmapNormal;
  }
  else
  {
   bitmap = m_BitmapHot;
  }
}
HDC dc = CreateCompatibleDC(lpDrawItemStruct->hDC);
HBITMAP OldBitmap = (HBITMAP)SelectObject(dc, bitmap);
RECT rect = lpDrawItemStruct->rcItem;
//BitBlt(lpDrawItemStruct->hDC, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, dc, 0, 0, SRCCOPY);

BITMAP bmp;
::GetObject(bitmap, sizeof(BITMAP), &bmp);

SetStretchBltMode(lpDrawItemStruct->hDC,COLORONCOLOR/*HALFTONE*/);
StretchBlt(lpDrawItemStruct->hDC,rect.left, rect.top,rect.right-rect.left,rect.bottom-rect.top, dc,0,0,bmp.bmWidth,bmp.bmHeight,SRCCOPY);

CString text;
GetWindowText(text);
SetBkMode(lpDrawItemStruct->hDC, TRANSPARENT);

DrawText(lpDrawItemStruct->hDC, text, text.GetLength(), &rect, DT_CENTER|DT_VCENTER|DT_SINGLELINE);

SelectObject(dc, OldBitmap);
DeleteDC(dc);
}

void SkinButton::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_bMouseLeave)
{
  Invalidate();
  TRACKMOUSEEVENT tme = {sizeof(TRACKMOUSEEVENT), TME_LEAVE, m_hWnd, 0};
  m_bMouseLeave = TrackMouseEvent(&tme);
}

CButton::OnMouseMove(nFlags, point);
}