VC编程之MFC + CxImage 实现自绘半透明按钮-职坐标

VC编程之MFC + CxImage 实现自绘半透明按钮

小标 2019-03-20 来源：阅读 1592 评论 0

摘要：本文主要向大家介绍了VC编程之MFC + CxImage 实现自绘半透明按钮，通过具体的内容向大家展示，希望对大家学习VC编程有所帮助。

本文主要向大家介绍了VC编程之MFC + CxImage 实现自绘半透明按钮，通过具体的内容向大家展示，希望对大家学习VC编程有所帮助。

VC编程之MFC + CxImage 实现自绘半透明按钮

[cpp] view plain copy

1.#pragma once
2.
3.// CBtn
4.#include "ximage/ximage.h"
5.
6.class CBtn : public CButton
7.{
8.    DECLARE_DYNAMIC(CBtn)
9.private:
10.    CxImage * m_pImgNormal;
11.    CxImage * m_pImgOver;
12.    CxImage * m_pImgDown;
13.    CxImage * m_pImgFocus;
14.    CxImage * m_pImgDisable;
15.
16.    BOOL m_bTracking;
17.    BOOL m_bMouseOver;
18.    BOOL m_bLBtnDown;
19.public:
20.    CBtn(UINT imgID_LbtnDown,UINT imgID_Over,UINT imgID_Normal,UINT imgID_Disabled=0,UINT imgID_Focus=0);
21.    virtual ~CBtn();
22.
23.protected:
24.    DECLARE_MESSAGE_MAP()
25.public:
26.    virtual void DrawItem(LPDRAWITEMSTRUCT /*lpDrawItemStruct*/);
27.    afx_msg void OnDestroy();
28.    afx_msg BOOL OnEraseBkgnd(CDC* pDC);
29.    afx_msg void OnMouseMove(UINT nFlags, CPoint point);
30.    afx_msg void OnMouseLeave();
31.    afx_msg void OnMouseHover(UINT nFlags, CPoint point);
32.protected:
33.    virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
34.public:
35.    void PaintParent();
36.    virtual BOOL Create(LPCTSTR lpszCaption, DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID);
37.    afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
38.    afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
39.    afx_msg void OnBnDoubleclicked();
40.    afx_msg void OnKillFocus(CWnd* pNewWnd);
41.};

btn.cpp

[cpp] view plain copy

1.// Btn.cpp : 实现文件
2.//
3.
4.#include "stdafx.h"
5.#include "Btn.h"
6.
7.
8.// CBtn
9.IMPLEMENT_DYNAMIC(CBtn, CButton)
10.
11.CBtn::CBtn(UINT imgID_LbtnDown,UINT imgID_Over,UINT imgID_Normal,UINT imgID_Disabled,UINT imgID_Focus):
12.      m_pImgNormal(NULL)
13.    , m_pImgOver(NULL)
14.    , m_pImgDown(NULL)
15.    , m_pImgFocus(NULL)
16.    , m_pImgDisable(NULL)
17.    , m_bTracking(FALSE)
18.    , m_bMouseOver(FALSE)
19.    , m_bLBtnDown(FALSE)
20.{
21.    if(imgID_Normal > 0)
22.    {
23.        if(!m_pImgNormal)
24.            m_pImgNormal = new CxImage(CXIMAGE_FORMAT_PNG);
25.        m_pImgNormal ->LoadResource(FindResource(NULL,MAKEINTRESOURCE(imgID_Normal),L"PNG"),CXIMAGE_FORMAT_PNG);
26.    }
27.    if(imgID_Focus > 0)
28.    {
29.        if(!m_pImgFocus)
30.            m_pImgFocus = new CxImage(CXIMAGE_FORMAT_PNG);
31.        m_pImgFocus ->LoadResource(FindResource(NULL,MAKEINTRESOURCE(imgID_Focus),L"PNG"),CXIMAGE_FORMAT_PNG);
32.    }
33.    if( imgID_LbtnDown>0 )
34.    {
35.        if(!m_pImgDown)
36.            m_pImgDown = new CxImage(CXIMAGE_FORMAT_PNG);
37.        m_pImgDown ->LoadResource(FindResource(NULL,MAKEINTRESOURCE(imgID_LbtnDown),L"PNG"),CXIMAGE_FORMAT_PNG);
38.    }
39.    if( imgID_Disabled > 0 )
40.    {
41.        if(!m_pImgDisable)
42.            m_pImgDisable = new CxImage(CXIMAGE_FORMAT_PNG);
43.        m_pImgDisable ->LoadResource(FindResource(NULL,MAKEINTRESOURCE(imgID_Disabled),L"PNG"),CXIMAGE_FORMAT_PNG);
44.    }
45.    if( imgID_Over > 0)
46.    {
47.        if(!m_pImgOver)
48.            m_pImgOver = new CxImage(CXIMAGE_FORMAT_PNG);
49.        m_pImgOver ->LoadResource(FindResource(NULL,MAKEINTRESOURCE(imgID_Over),L"PNG"),CXIMAGE_FORMAT_PNG);
50.    }
51.}
52.
53.CBtn::~CBtn()
54.{
55.}
56.
57.BEGIN_MESSAGE_MAP(CBtn, CWnd)
58.    ON_WM_DESTROY()
59.    ON_WM_ERASEBKGND()
60.    ON_WM_MOUSEMOVE()
61.    ON_WM_MOUSELEAVE()
62.    ON_WM_MOUSEHOVER()
63.    ON_WM_LBUTTONDOWN()
64.    ON_WM_LBUTTONUP()
65.    ON_CONTROL_REFLECT(BN_DOUBLECLICKED, &CBtn::OnBnDoubleclicked)
66.    ON_WM_KILLFOCUS()
67.END_MESSAGE_MAP()
68.
69.
70.// CBtn 消息处理程序
71.void CBtn::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
72.{
73.    CDC ButtonDC;
74.    CRect rc;
75.
76.    ButtonDC.Attach(lpDrawItemStruct->hDC); //得到用于绘制按钮的DC
77.    rc=lpDrawItemStruct->rcItem; //获取按钮所占的矩形大小
78.
79.    UINT state = lpDrawItemStruct->itemState; //获取按钮目前所处的状态，根据不同的状态绘制不同的按钮
80.
81.    if(state&ODS_DISABLED && m_pImgDisable)
82.    {
83.        m_pImgDisable ->Draw(ButtonDC.GetSafeHdc(),rc);
84.    }
85.    else
86.    {
87.
88.        if( m_bLBtnDown && m_pImgDown)
89.        {
90.            m_pImgDown ->Draw(ButtonDC.GetSafeHdc(),rc);
91.        }
92.        else if(m_bMouseOver && m_pImgOver)
93.        {
94.            m_pImgOver ->Draw(ButtonDC.GetSafeHdc(),rc);
95.        }
96.        else if(state&ODS_FOCUS && m_pImgFocus)
97.        {
98.            m_pImgFocus ->Draw(ButtonDC.GetSafeHdc(),rc);
99.        }
100.        else if(m_pImgNormal)
101.        {
102.            m_pImgNormal ->Draw(ButtonDC.GetSafeHdc(),rc);
103.        }
104.    }
105.}
106.
107.void CBtn::OnDestroy()
108.{
109.    CButton::OnDestroy();
110.
111.    // TODO: 在此处添加消息处理程序代码
112.    if(m_pImgNormal)
113.    {
114.        m_pImgNormal ->Destroy();
115.        delete m_pImgNormal;
116.        m_pImgNormal = NULL;
117.    }
118.    if(m_pImgOver)
119.    {
120.        m_pImgOver ->Destroy();
121.        delete m_pImgOver;
122.        m_pImgOver = NULL;
123.    }
124.    if(m_pImgDown)
125.    {
126.        m_pImgDown ->Destroy();
127.        delete m_pImgDown;
128.        m_pImgDown = NULL;
129.    }
130.    if(m_pImgFocus)
131.    {
132.        m_pImgFocus ->Destroy();
133.        delete m_pImgFocus;
134.        m_pImgFocus = NULL;
135.    }
136.    if(m_pImgDisable)
137.    {
138.        m_pImgDisable ->Destroy();
139.        delete m_pImgDisable;
140.        m_pImgDisable = NULL;
141.    }
142.}
143.
144.BOOL CBtn::OnEraseBkgnd(CDC* pDC)
145.{
146.    // TODO: 在此添加消息处理程序代码和/或调用默认值
147.    return TRUE;
148.    //return CButton::OnEraseBkgnd(pDC);
149.}
150.
151.BOOL CBtn::PreCreateWindow(CREATESTRUCT& cs)
152.{
153.    // TODO: 在此添加专用代码和/或调用基类
154.    cs.style |= BS_OWNERDRAW;
155.
156.    return CButton::PreCreateWindow(cs);
157.}
158.
159.void CBtn::OnMouseMove(UINT nFlags, CPoint point)
160.{
161.    // TODO: 在此添加消息处理程序代码和/或调用默认值
162.    m_bMouseOver = TRUE;
163.    if (!m_bTracking)
164.    {
165.        TRACKMOUSEEVENT   tme;
166.        tme.cbSize      =   sizeof(TRACKMOUSEEVENT);
167.        tme.dwFlags     =   TME_LEAVE|TME_HOVER; //
168.        tme.hwndTrack   =   GetSafeHwnd();
169.        tme.dwHoverTime =   8;
170.        _TrackMouseEvent(&tme);
171.        m_bTracking = TRUE;
172.    }
173.    CButton::OnMouseMove(nFlags, point);
174.    ::SetCursor(AfxGetApp() ->LoadCursor(IDC_CURSOR_HAND));
175.}
176.
177.void CBtn::OnMouseLeave()
178.{
179.    // TODO: 在此添加消息处理程序代码和/或调用默认值
180.    m_bMouseOver    =   FALSE;
181.    m_bTracking     =   FALSE;
182.    m_bLBtnDown     =   FALSE;
183.    PaintParent();
184.    CButton::OnMouseLeave();
185.}
186.
187.void CBtn::OnMouseHover(UINT nFlags, CPoint point)
188.{
189.    m_bMouseOver = TRUE;
190.    PaintParent();
191.    ::SetCursor(AfxGetApp() ->LoadCursor(IDC_CURSOR_HAND));
192.}
193.
194.void CBtn::PaintParent()
195.{
196.    CRect   rect;
197.    GetWindowRect(&rect);
198.    GetParent()-> ScreenToClient(&rect);
199.    GetParent()-> InvalidateRect(&rect);
200.}
201.
202.BOOL CBtn::Create(LPCTSTR lpszCaption, DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID)
203.{
204.    BOOL OK=CButton::Create(lpszCaption, dwStyle, rect, pParentWnd, nID);
205.    ModifyStyleEx(0, WS_EX_TRANSPARENT);// WS_EX_LAYERED||WS_EX_TRANSPARENT
206.    return OK;
207.}
208.
209.void CBtn::OnLButtonDown(UINT nFlags, CPoint point)
210.{
211.    m_bLBtnDown = TRUE;
212.    PaintParent();
213.    CButton::OnLButtonDown(nFlags, point);
214.    ::SetCursor(AfxGetApp() ->LoadCursor(IDC_CURSOR_HAND));
215.}
216.
217.void CBtn::OnLButtonUp(UINT nFlags, CPoint point)
218.{
219.    m_bLBtnDown = FALSE;
220.    PaintParent();
221.    CButton::OnLButtonUp(nFlags, point);
222.    ::SetCursor(AfxGetApp() ->LoadCursor(IDC_CURSOR_HAND));
223.}
224.
225.void CBtn::OnBnDoubleclicked()
226.{
227.    // TODO: 在此添加控件通知处理程序代码
228.    ::SetCursor(AfxGetApp() ->LoadCursor(IDC_CURSOR_HAND));
229.}
230.
231.void CBtn::OnKillFocus(CWnd* pNewWnd)
232.{
233.    CButton::OnKillFocus(pNewWnd);
234.
235.    // TODO: 在此处添加消息处理程序代码
236.    PaintParent();
237.}

调用
[cpp] view plain copy

1.///头文件中添加
2....
3.#include "Btn.h"
4....
5.        enum {emTestBtnId1=8099,emTestBtnId2,emTestBtnId3};
6.    CBtn m_btnTest1,m_btnTest2,m_btnTest3;//test
7.
8.///在构造函数初始化列表中初始化变量(IDB_PNG_BTN_TEST_*为Png图片资源ID)
9.    , m_btnTest1(IDB_PNG_BTN_TEST_DOWN,
10.            IDB_PNG_BTN_TEST_MOUSEOVER,
11.            IDB_PNG_BTN_TEST_NORMAL,
12.            IDB_PNG_BTN_TEST_DISABLE,
13.            IDB_PNG_BTN_TEST_FOCUS)
14.    , m_btnTest2(IDB_PNG_BTN_TEST_DOWN,
15.            IDB_PNG_BTN_TEST_MOUSEOVER,
16.            IDB_PNG_BTN_TEST_NORMAL,
17.            IDB_PNG_BTN_TEST_DISABLE/*,IDB_PNG_BTN_TEST_FOCUS*/)
18.    , m_btnTest3(IDB_PNG_BTN_TEST_DOWN,
19.            IDB_PNG_BTN_TEST_MOUSEOVER,
20.            IDB_PNG_BTN_TEST_NORMAL,
21.            IDB_PNG_BTN_TEST_DISABLE/*,IDB_PNG_BTN_TEST_FOCUS*/)
22.
23.////在OnInitDialog()函数中创建按钮
24.    //test
25.    m_btnTest1.Create(_T("test"),WS_VISIBLE | WS_CHILD/* |WS_DISABLED*/,CRect(10,10,58,58),this,emTestBtnId1);
26.    m_btnTest2.Create(_T("test"),WS_VISIBLE | WS_CHILD/* |WS_DISABLED*/,CRect(10,60,58,108),this,emTestBtnId2);
27.    m_btnTest3.Create(_T("test"),WS_VISIBLE | WS_CHILD |WS_DISABLED,CRect(10,110,58,158),this,emTestBtnId2);