MFC中改变按钮颜色的方法

来源：互联网发布：绿地控股历史价格数据编辑：程序博客网时间：2024/05/29 02:54

1.使用CMFCButton类

MFC自带的MFC Button Control控件等按钮可以修改颜色，还能添加图片，设置字体颜色等。这些控件就在工具箱的下面，前面带MFC开头的那些。

在需要改颜色的地方调用m_btn.SetFaceColor(RGB(0, 255, 0));即可。

CMFCButton中的SetFaceColor（）可能会显示不出颜色，需要设置

m_button_sure.m_bTransparent=FALSE;

m_button_sure.m_bDontUseWinXPTheme= TRUE;才可。

在button里面点击会有黑圈，要消除黑色圆圈需要使button里面的属性m_bDrawFocus = FALSE。

链接http://www.cnblogs.com/weiqubo/archive/2011/03/31/2000953.html

消除button的边框，不是很立体的，使

m_button_cancel.m_nFlatStyle = CMFCButton::BUTTONSTYLE_NOBORDERS;使其样式变化,CMFCButton可以设置属性。

2.手动添加消息映射的方法实现改变按钮的颜色，不必创建新的类！

将button修改为owner draw 类型

重载OnDrawItem函数，并对其改写

在适当的位置添加下面的语句

afx_msg void OnDrawItem(int nIDCtl, LPDRAWITEMSTRUCT lpDrawItemStruct);

ON_WM_DRAWITEM()

在消息响应函数里添加如下代码：

void CXXX::OnDrawItem(int nIDCtl, LPDRAWITEMSTRUCT lpDrawItemStruct)
{
CDC dc;
dc.Attach(lpDrawItemStruct->hDC);
ASSERT(lpDrawItemStruct->CtlType == ODT_BUTTON);

CString strText;
((CButton *)GetDlgItem(nIDCtl))->GetWindowText(strText);

SetBkMode(lpDrawItemStruct->hDC, TRANSPARENT);
//if (lpDrawItemStruct->itemState&ODS_SELECTED)
{
CBrush brush(RGB(255, 0, 0));
dc.FillRect(&(lpDrawItemStruct->rcItem), &brush);
DrawText(lpDrawItemStruct->hDC, strText, strText.GetLength(),
&lpDrawItemStruct->rcItem, DT_SINGLELINE | DT_VCENTER | DT_CENTER);
SetBkMode(lpDrawItemStruct->hDC, TRANSPARENT);
}
dc.Detach();

}

可以参考：http://blog.sina.com.cn/s/blog_65cab32d01013uad.html

3.OnCtlColor

在控件显示之前,每一个控件会向父对话框发送一个WM_CTLCOLOR消息,这个消息缺省处理函数CWnd::OnCtlColor返回一个HBRUSH类型的句柄,这样,就可以设置前景和背景文本颜色,并为控件或者对话框的非文本区域选定一个刷子。 　　实现： 　　① 先创建一个基于对话框的工程，命名为test，然后在对话框上加入一个ListBox控件。 　　② 在testDlg.h中加入一个成员变量：HBRUSH m_hbrush; 　　③ 在OnInitDialog()中，加入m_hbrush=CreateSolidBrush(RGB(0,0,0);此处设置的RGB值可以改变ListBox的背景色。为了观看ListBox中字的颜色变化，给ListBox加入几个字：利用Class Wizard给ListBox加入一个Control类型的成员变量m_ctrlListBox，然后在OnInitDialog()加入如下所示的代码： m_ctrlListBox.AddString("第一行");m_ctrlListBox.AddString("第二行"); 　　④ 点击Class Wizard，给testDlg加入WM_CTLCOLOR事件，单击Edit Code按钮，然后把改函数的内容替换为如下代码： if(nCtlColor== CTLCOLOR_LISTBOX){pDC->SetBkMode(TRANSPARENT);//此处设置字体的颜色pDC->SetTextColor(RGB(255,255,255));return m_hbrush;}elsereturn CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

例：

// ColorChooseToolDlg.h : header file
//

#pragma once

// CColorChooseToolDlg dialog
class CColorChooseToolDlg : public CDialogEx
{
// Construction
public:
   CColorChooseToolDlg(CWnd* pParent = NULL);   // standard constructor

// Dialog Data
   enum { IDD = IDD_COLORCHOOSETOOL_DIALOG };

   protected:
   virtual void DoDataExchange(CDataExchange* pDX);   // DDX/DDV support

// Implementation
protected:
   HICON m_hIcon;

   // Generated message map functions
   virtual BOOL OnInitDialog();
   afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
   afx_msg void OnPaint();
   afx_msg HCURSOR OnQueryDragIcon();
   afx_msg void OnBnClickedColorButton(UINT uID);
   DECLARE_MESSAGE_MAP()

private:
   void initColor();
   CRect getFrameRect(int frameId);
   void createColorCtr(int ctrId, int strId, int num, void *ctr, long btnStyle,int btnXPos, int btnYPos, int originalCtrId);
   void createColorBtns();
   void createColorString();

private:
   enum { COLORSTR_NUM = 3, COLORBTN_NUM = 3};
   int ctrId;
   int btnId;
   CStatic colorStr[COLORSTR_NUM];
   CMFCButton colorBtn[COLORBTN_NUM];
   COLORREF color[COLORBTN_NUM];
};

// ColorChooseToolDlg.cpp : implementation file
//

#include "stdafx.h"
#include "ColorChooseTool.h"
#include "ColorChooseToolDlg.h"
#include "afxdialogex.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

#define BUTTON_HEIGHT   30
#define ADJACENT_BTN_DISTANCE      80
#define STRING_CONTROL 0
#define BUTTON_CONTROL 1

// CAboutDlg dialog used for App About

class CAboutDlg : public CDialogEx
{
public:
   CAboutDlg();

// Dialog Data
   enum { IDD = IDD_ABOUTBOX };

   protected:
   virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support

// Implementation
protected:
   DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialogEx(CAboutDlg::IDD)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
   CDialogEx::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)
END_MESSAGE_MAP()

// CColorChooseToolDlg dialog

CColorChooseToolDlg::CColorChooseToolDlg(CWnd* pParent /*=NULL*/)
   : CDialogEx(CColorChooseToolDlg::IDD, pParent)
{
   m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
   initColor();
}

void CColorChooseToolDlg::DoDataExchange(CDataExchange* pDX)
{
   CDialogEx::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CColorChooseToolDlg, CDialogEx)
   ON_WM_SYSCOMMAND()
   ON_WM_PAINT()
   ON_WM_QUERYDRAGICON()
   ON_COMMAND_RANGE(IDC_CHOOSE_COLOR_A_BUTTON, IDC_CHOOSE_COLOR_C_BUTTON, OnBnClickedColorButton)
END_MESSAGE_MAP()

// CColorChooseToolDlg message handlers

BOOL CColorChooseToolDlg::OnInitDialog()
{
   CDialogEx::OnInitDialog();

   // Add "About..." menu item to system menu.

   // IDM_ABOUTBOX must be in the system command range.
   ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
   ASSERT(IDM_ABOUTBOX < 0xF000);

   CMenu* pSysMenu = GetSystemMenu(FALSE);
   if (pSysMenu != NULL)
   {
       BOOL bNameValid;
       CString strAboutMenu;
       bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
       ASSERT(bNameValid);
       if (!strAboutMenu.IsEmpty())
       {
           pSysMenu->AppendMenu(MF_SEPARATOR);
           pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
       }
   }

   // Set the icon for this dialog. The framework does this automatically
   // when the application's main window is not a dialog
   SetIcon(m_hIcon, TRUE);           // Set big icon
   SetIcon(m_hIcon, FALSE);       // Set small icon

   // TODO: Add extra initialization here
   createColorString();
   createColorBtns();

   return TRUE; // return TRUE unless you set the focus to a control
}

void CColorChooseToolDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
   if ((nID & 0xFFF0) == IDM_ABOUTBOX)
   {
       CAboutDlg dlgAbout;
       dlgAbout.DoModal();
   }
   else
   {
       CDialogEx::OnSysCommand(nID, lParam);
   }
}

// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.

void CColorChooseToolDlg::OnPaint()
{
   if (IsIconic())
   {
       CPaintDC dc(this); // device context for painting

       SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);

       // Center icon in client rectangle
       int cxIcon = GetSystemMetrics(SM_CXICON);
       int cyIcon = GetSystemMetrics(SM_CYICON);
       CRect rect;
       GetClientRect(&rect);
       int x = (rect.Width() - cxIcon + 1) / 2;
       int y = (rect.Height() - cyIcon + 1) / 2;

       // Draw the icon
       dc.DrawIcon(x, y, m_hIcon);
   }
   else
   {
       CDialogEx::OnPaint();
   }
}

// The system calls this function to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CColorChooseToolDlg::OnQueryDragIcon()
{
   return static_cast<HCURSOR>(m_hIcon);
}

//Click different radio button to update corresponding checkbox buttons.
void CColorChooseToolDlg::OnBnClickedColorButton(UINT uID)
{
   // TODO: Add your control notification handler code here
   btnId = uID - IDC_CHOOSE_COLOR_A_BUTTON;
   CColorDialog colorDlg(color[btnId]);

    if (IDOK == colorDlg.DoModal())
    {
        color[btnId] = colorDlg.GetColor();
       colorBtn[btnId].m_bTransparent = FALSE;
       colorBtn[btnId].m_bDontUseWinXPTheme = TRUE;
       colorBtn[btnId].m_bDrawFocus = FALSE;
       colorBtn[btnId].SetFaceColor(color[btnId]);
    }
}

void CColorChooseToolDlg::initColor()
{
   int i;
   for(i = 0;i < COLORBTN_NUM;i++)
   {
       color[i] = RGB(255, 0, 0);
   }
}

CRect CColorChooseToolDlg::getFrameRect(int frameId)
{
   CRect frameRect;
   GetDlgItem(frameId)->GetWindowRect(&frameRect);
   ScreenToClient(frameRect);
   return frameRect;
}

void CColorChooseToolDlg::createColorString()
{
   CRect frameRect;
   frameRect = getFrameRect(IDC_STATIC);
   const int strXpos = frameRect.left - 4 * BUTTON_HEIGHT;
   const int strYpos = frameRect.top + BUTTON_HEIGHT + 10;

   createColorCtr(0, IDS_STRING102, COLORSTR_NUM, colorStr, WS_CHILD|WS_VISIBLE, strXpos, strYpos, IDC_CHOOSE_COLOR_A_STRING);
}

void CColorChooseToolDlg::createColorCtr(int id, int strId, int num, void *ctr, long btnStyle,int btnXPos, int btnYPos, int originalCtrId)
{
   int length;
   CString strCtrName;
   CClientDC dc(this);
   dc.SelectObject(GetFont());

   for(ctrId=0; ctrId<num; ctrId++)
   {
       strCtrName.LoadStringW(strId+ctrId);
       length = dc.GetTextExtent(strCtrName).cx + 2 * BUTTON_HEIGHT;
       if(STRING_CONTROL == id) {
           ((CStatic*)ctr)[ctrId].Create(strCtrName, btnStyle, CRect(btnXPos, btnYPos+ctrId*ADJACENT_BTN_DISTANCE, length, BUTTON_HEIGHT), this, originalCtrId+ctrId);
           ((CStatic*)ctr)[ctrId].MoveWindow(btnXPos, btnYPos+ctrId*ADJACENT_BTN_DISTANCE, length, BUTTON_HEIGHT);
           ((CStatic*)ctr)[ctrId].SetFont(GetFont(),TRUE);
       }else if(BUTTON_CONTROL == id) {
           ((CMFCButton*)ctr)[ctrId].Create(strCtrName, btnStyle, CRect(btnXPos, btnYPos+ctrId*ADJACENT_BTN_DISTANCE, length, BUTTON_HEIGHT), this, originalCtrId+ctrId);
           ((CMFCButton*)ctr)[ctrId].MoveWindow(btnXPos, btnYPos+ctrId*ADJACENT_BTN_DISTANCE, length, BUTTON_HEIGHT);
           ((CMFCButton*)ctr)[ctrId].SetFont(GetFont(),TRUE);
       }
   }
}

void CColorChooseToolDlg::createColorBtns()
{
   CRect frameRect;
   frameRect = getFrameRect(IDC_STATIC);
   const int btnXpos = frameRect.left + 2 * BUTTON_HEIGHT;
   const int btnYpos = frameRect.top + BUTTON_HEIGHT;

   createColorCtr(1, IDS_STRING105, COLORBTN_NUM, colorBtn, WS_CHILD|WS_VISIBLE|WS_TABSTOP, btnXpos, btnYpos, IDC_CHOOSE_COLOR_A_BUTTON);
}

0 0