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MFC中CMFCButton類改變顏色的使用

// 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);
}