MFC中改變按鈕顏色的方法


轉載自:MFC中改變按鈕顏色的方法

1.使用CMFCButton類

  MFC自帶的MFC Button Control控件等按鈕可以修改顏色,還能添加圖片,設置字體顏色等。這些控件就在工具箱的下面,前面帶MFC開頭的那些。
  在需要改顏色的地方調用m_btn.SetFaceColor(RGB(0, 255, 0));即可。
CMFCButton中的SetFaceColor()可能會顯示不出顏色,需要設置
m_button_sure.m_bTransparent=FALSE;
m_button_sure.m_bDontUseWinXPTheme= TRUE;才可。
  在button里面點擊會有黑圈,要消除黑色圓圈需要使button里面的屬性m_bDrawFocus = FALSE。
  鏈接http://www.cnblogs.com/weiqubo/archive/2011/03/31/2000953.html
  消除button的邊框,不是很立體的,使

  m_button_cancel.m_nFlatStyle = CMFCButton::BUTTONSTYLE_NOBORDERS; 使其樣式變化,CMFCButton可以設置屬性。

2.手動添加消息映射的方法實現改變按鈕的顏色,不必創建新的類!

  將button修改為owner draw 類型, 重載OnDrawItem函數,並對其改寫,在適當的位置添加下面的語句
  afx_msg void OnDrawItem(int nIDCtl, LPDRAWITEMSTRUCT lpDrawItemStruct);
  ON_WM_DRAWITEM()
在消息響應函數里添加如下代碼:

 1 void CXXX::OnDrawItem(int nIDCtl, LPDRAWITEMSTRUCT lpDrawItemStruct)
 2 {
 3     CDC dc;
 4     dc.Attach(lpDrawItemStruct->hDC);
 5     ASSERT(lpDrawItemStruct->CtlType == ODT_BUTTON);
 6 
 7     CString strText;
 8     ((CButton *)GetDlgItem(nIDCtl))->GetWindowText(strText);
 9 
10     SetBkMode(lpDrawItemStruct->hDC, TRANSPARENT);
11     //if (lpDrawItemStruct->itemState&ODS_SELECTED)
12     {
13     CBrush brush(RGB(255, 0, 0));
14     dc.FillRect(&(lpDrawItemStruct->rcItem), &brush);
15     DrawText(lpDrawItemStruct->hDC, strText, strText.GetLength(),
16     &lpDrawItemStruct->rcItem, DT_SINGLELINE | DT_VCENTER | DT_CENTER);
17     SetBkMode(lpDrawItemStruct->hDC, TRANSPARENT);
18     }
19     dc.Detach();
20 }

  可以參考:http://blog.sina.com.cn/s/blog_65cab32d01013uad.html

3.OnCtlColor

  在控件顯示之前,每一個控件會向父對話框發送一個WM_CTLCOLOR消息,這個消息缺省處理函數CWnd::OnCtlColor返回一個HBRUSH類型的句柄,這樣,就可以設置前景和背景文本顏色,並為控件或者對話框的非文本區域選定一個刷子。
  實現:
  ① 先創建一個基於對話框的工程,命名為test,然后在對話框上加入一個ListBox控件。
  ② 在testDlg.h中加入一個成員變量:HBRUSH m_hbrush;
  ③ 在OnInitDialog()中,加入m_hbrush=CreateSolidBrush(RGB(0,0,0);此處設置的RGB值可以改變ListBox的背景色。為了觀看ListBox中字的顏色變化,給ListBox加入幾個字:利用Class Wizard給ListBox加入一個Control類型的成員變量m_ctrlListBox,然后在OnInitDialog()加入如下所示的代碼:
m_ctrlListBox.AddString("第一行");
m_ctrlListBox.AddString("第二行");
  ④ 點擊Class Wizard,給testDlg加入WM_CTLCOLOR事件,單擊Edit Code按鈕,然后把改函數的內容替換為如下代碼:

  1 if(nCtlColor== CTLCOLOR_LISTBOX)
  2 {
  3 pDC->SetBkMode(TRANSPARENT);
  4 //此處設置字體的顏色
  5 pDC->SetTextColor(RGB(255,255,255));
  6 return m_hbrush;
  7 }
  8 else
  9 return CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
 10 例:
 11 // ColorChooseToolDlg.h : header file
 12 //
 13 #pragma once
 14 
 15 // CColorChooseToolDlg dialog
 16 class CColorChooseToolDlg : public CDialogEx
 17 {
 18 // Construction
 19 public:
 20     CColorChooseToolDlg(CWnd* pParent = NULL);    // standard constructor
 21 
 22 // Dialog Data
 23     enum { IDD = IDD_COLORCHOOSETOOL_DIALOG };
 24 
 25     protected:
 26     virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
 27 
 28 
 29 // Implementation
 30 protected:
 31     HICON m_hIcon;
 32 
 33     // Generated message map functions
 34     virtual BOOL OnInitDialog();
 35     afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
 36     afx_msg void OnPaint();
 37     afx_msg HCURSOR OnQueryDragIcon();
 38     afx_msg void OnBnClickedColorButton(UINT uID);
 39     DECLARE_MESSAGE_MAP()
 40 
 41 private:
 42     void initColor();
 43     CRect getFrameRect(int frameId);
 44     void createColorCtr(int ctrId, int strId, int num, void *ctr, long btnStyle,int btnXPos, int btnYPos, int originalCtrId);
 45     void createColorBtns();
 46     void createColorString();
 47 
 48 private:
 49     enum { COLORSTR_NUM = 3, COLORBTN_NUM = 3};
 50     int ctrId;
 51     int btnId;
 52     CStatic colorStr[COLORSTR_NUM];
 53     CMFCButton colorBtn[COLORBTN_NUM];
 54     COLORREF color[COLORBTN_NUM];
 55 };
 56 
 57 // ColorChooseToolDlg.cpp : implementation file
 58 //
 59 
 60 #include "stdafx.h"
 61 #include "ColorChooseTool.h"
 62 #include "ColorChooseToolDlg.h"
 63 #include "afxdialogex.h"
 64 
 65 #ifdef _DEBUG
 66 #define new DEBUG_NEW
 67 #endif
 68 
 69 #define BUTTON_HEIGHT    30
 70 #define ADJACENT_BTN_DISTANCE      80
 71 #define STRING_CONTROL 0
 72 #define BUTTON_CONTROL 1
 73 
 74 // CAboutDlg dialog used for App About
 75 class CAboutDlg : public CDialogEx
 76 {
 77 public:
 78     CAboutDlg();
 79 // Dialog Data
 80     enum { IDD = IDD_ABOUTBOX };
 81     protected:
 82     virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
 83 // Implementation
 84 protected:
 85     DECLARE_MESSAGE_MAP()
 86 };
 87 
 88 CAboutDlg::CAboutDlg() : CDialogEx(CAboutDlg::IDD)
 89 {
 90 }
 91 
 92 void CAboutDlg::DoDataExchange(CDataExchange* pDX)
 93 {
 94     CDialogEx::DoDataExchange(pDX);
 95 }
 96 
 97 BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)
 98 END_MESSAGE_MAP()
 99 
100 // CColorChooseToolDlg dialog
101 CColorChooseToolDlg::CColorChooseToolDlg(CWnd* pParent /*=NULL*/)
102     : CDialogEx(CColorChooseToolDlg::IDD, pParent)
103 {
104     m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
105     initColor();
106 }
107 
108 void CColorChooseToolDlg::DoDataExchange(CDataExchange* pDX)
109 {
110     CDialogEx::DoDataExchange(pDX);
111 }
112 
113 BEGIN_MESSAGE_MAP(CColorChooseToolDlg, CDialogEx)
114     ON_WM_SYSCOMMAND()
115     ON_WM_PAINT()
116     ON_WM_QUERYDRAGICON()
117     ON_COMMAND_RANGE(IDC_CHOOSE_COLOR_A_BUTTON, IDC_CHOOSE_COLOR_C_BUTTON, OnBnClickedColorButton)
118 END_MESSAGE_MAP()
119 
120 
121 // CColorChooseToolDlg message handlers
122 
123 BOOL CColorChooseToolDlg::OnInitDialog()
124 {
125     CDialogEx::OnInitDialog();
126 
127     // Add "About..." menu item to system menu.
128 
129     // IDM_ABOUTBOX must be in the system command range.
130     ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
131     ASSERT(IDM_ABOUTBOX < 0xF000);
132 
133     CMenu* pSysMenu = GetSystemMenu(FALSE);
134     if (pSysMenu != NULL)
135     {
136         BOOL bNameValid;
137         CString strAboutMenu;
138         bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
139         ASSERT(bNameValid);
140         if (!strAboutMenu.IsEmpty())
141         {
142             pSysMenu->AppendMenu(MF_SEPARATOR);
143             pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
144         }
145     }
146 
147     // Set the icon for this dialog.  The framework does this automatically
148     //  when the application's main window is not a dialog
149     SetIcon(m_hIcon, TRUE);            // Set big icon
150     SetIcon(m_hIcon, FALSE);        // Set small icon
151 
152     // TODO: Add extra initialization here
153     createColorString();
154     createColorBtns();
155 
156     return TRUE;  // return TRUE  unless you set the focus to a control
157 }
158 
159 void CColorChooseToolDlg::OnSysCommand(UINT nID, LPARAM lParam)
160 {
161     if ((nID & 0xFFF0) == IDM_ABOUTBOX)
162     {
163         CAboutDlg dlgAbout;
164         dlgAbout.DoModal();
165     }
166     else
167     {
168         CDialogEx::OnSysCommand(nID, lParam);
169     }
170 }
171 
172 // If you add a minimize button to your dialog, you will need the code below
173 //  to draw the icon.  For MFC applications using the document/view model,
174 //  this is automatically done for you by the framework.
175 
176 void CColorChooseToolDlg::OnPaint()
177 {
178     if (IsIconic())
179     {
180         CPaintDC dc(this); // device context for painting
181 
182         SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);
183 
184         // Center icon in client rectangle
185         int cxIcon = GetSystemMetrics(SM_CXICON);
186         int cyIcon = GetSystemMetrics(SM_CYICON);
187         CRect rect;
188         GetClientRect(&rect);
189         int x = (rect.Width() - cxIcon + 1) / 2;
190         int y = (rect.Height() - cyIcon + 1) / 2;
191 
192         // Draw the icon
193         dc.DrawIcon(x, y, m_hIcon);
194     }
195     else
196     {
197         CDialogEx::OnPaint();
198     }
199 }
200 
201 // The system calls this function to obtain the cursor to display while the user drags
202 //  the minimized window.
203 HCURSOR CColorChooseToolDlg::OnQueryDragIcon()
204 {
205     return static_cast<HCURSOR>(m_hIcon);
206 }
207 
208 //Click different radio button to update corresponding checkbox buttons.
209 void CColorChooseToolDlg::OnBnClickedColorButton(UINT uID)
210 {
211     // TODO: Add your control notification handler code here
212     btnId = uID - IDC_CHOOSE_COLOR_A_BUTTON;
213     CColorDialog colorDlg(color[btnId]);
214  
215     if (IDOK == colorDlg.DoModal())
216     {   
217         color[btnId] = colorDlg.GetColor();
218         colorBtn[btnId].m_bTransparent = FALSE;
219         colorBtn[btnId].m_bDontUseWinXPTheme = TRUE;
220         colorBtn[btnId].m_bDrawFocus = FALSE;
221         colorBtn[btnId].SetFaceColor(color[btnId]);
222     }
223 }
224 
225 void CColorChooseToolDlg::initColor()
226 {
227     int i;
228     for(i = 0;i < COLORBTN_NUM;i++)
229     {
230         color[i] = RGB(255, 0, 0);
231     }
232 }
233 
234 CRect CColorChooseToolDlg::getFrameRect(int frameId)
235 {
236     CRect frameRect;
237     GetDlgItem(frameId)->GetWindowRect(&frameRect);
238     ScreenToClient(frameRect);
239     return frameRect;
240 }
241 
242 void CColorChooseToolDlg::createColorString()
243 {
244     CRect frameRect;
245     frameRect = getFrameRect(IDC_STATIC);
246     const int strXpos = frameRect.left - 4 * BUTTON_HEIGHT;
247     const int strYpos = frameRect.top + BUTTON_HEIGHT + 10;
248 
249     createColorCtr(0, IDS_STRING102, COLORSTR_NUM, colorStr, WS_CHILD|WS_VISIBLE, strXpos, strYpos, IDC_CHOOSE_COLOR_A_STRING);
250 }
251 
252 void CColorChooseToolDlg::createColorCtr(int id, int strId, int num, void *ctr, long btnStyle,int btnXPos, int btnYPos, int originalCtrId)
253 {
254     int length;
255     CString strCtrName;
256     CClientDC dc(this);
257     dc.SelectObject(GetFont());
258     
259     for(ctrId=0; ctrId<num; ctrId++)
260     {
261         strCtrName.LoadStringW(strId+ctrId);
262         length = dc.GetTextExtent(strCtrName).cx + 2 * BUTTON_HEIGHT;
263         if(STRING_CONTROL == id) {
264             ((CStatic*)ctr)[ctrId].Create(strCtrName, btnStyle, CRect(btnXPos, btnYPos+ctrId*ADJACENT_BTN_DISTANCE, length, BUTTON_HEIGHT), this, originalCtrId+ctrId);
265             ((CStatic*)ctr)[ctrId].MoveWindow(btnXPos, btnYPos+ctrId*ADJACENT_BTN_DISTANCE, length, BUTTON_HEIGHT);
266             ((CStatic*)ctr)[ctrId].SetFont(GetFont(),TRUE);
267         }else if(BUTTON_CONTROL == id) {
268             ((CMFCButton*)ctr)[ctrId].Create(strCtrName, btnStyle, CRect(btnXPos, btnYPos+ctrId*ADJACENT_BTN_DISTANCE, length, BUTTON_HEIGHT), this, originalCtrId+ctrId);
269             ((CMFCButton*)ctr)[ctrId].MoveWindow(btnXPos, btnYPos+ctrId*ADJACENT_BTN_DISTANCE, length, BUTTON_HEIGHT);
270             ((CMFCButton*)ctr)[ctrId].SetFont(GetFont(),TRUE);
271         }
272     }
273 }
274 
275 void CColorChooseToolDlg::createColorBtns()
276 {
277     CRect frameRect;
278     frameRect = getFrameRect(IDC_STATIC);
279     const int btnXpos = frameRect.left + 2 * BUTTON_HEIGHT;
280     const int btnYpos = frameRect.top + BUTTON_HEIGHT;
281 
282     createColorCtr(1, IDS_STRING105, COLORBTN_NUM, colorBtn, WS_CHILD|WS_VISIBLE|WS_TABSTOP, btnXpos, btnYpos, IDC_CHOOSE_COLOR_A_BUTTON);
283 }

 


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