
// GetRGBDlg.cpp : 实现文件
//

#include "stdafx.h"
#include "GetRGB.h"
#include "GetRGBDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// 用于应用程序“关于”菜单项的 CAboutDlg 对话框

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

// 对话框数据
	enum { IDD = IDD_ABOUTBOX };

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

// 实现
protected:
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
}

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

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
END_MESSAGE_MAP()


// CGetRGBDlg 对话框




CGetRGBDlg::CGetRGBDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CGetRGBDlg::IDD, pParent)
	, m_EditRed(_T(""))
	, m_EditGreen(_T(""))
	, m_EditBlue(_T(""))
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	red=250;
	green=250;
	blue=250;
	m_EditRed=_T("250");
	m_EditGreen=_T("250");
	m_EditBlue=_T("250");
}

void CGetRGBDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	DDX_Text(pDX, IDC_EDIT1, m_EditRed);
	DDX_Text(pDX, IDC_EDIT2, m_EditGreen);
	DDX_Text(pDX, IDC_EDIT3, m_EditBlue);
}

BEGIN_MESSAGE_MAP(CGetRGBDlg, CDialog)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
	ON_BN_CLICKED(IDC_BUTTON1, &CGetRGBDlg::OnBnClickedButton1)
	ON_EN_CHANGE(IDC_EDIT1, &CGetRGBDlg::OnEnChangeEdit1)
	ON_WM_RBUTTONDOWN()
	ON_WM_TIMER()
	ON_BN_CLICKED(IDC_BUTTON2, &CGetRGBDlg::OnBnClickedButton2)
//	ON_EN_CHANGE(IDC_RED, &CGetRGBDlg::OnEnChangeRed)
END_MESSAGE_MAP()


// CGetRGBDlg 消息处理程序

BOOL CGetRGBDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// 将“关于...”菜单项添加到系统菜单中。

	// IDM_ABOUTBOX 必须在系统命令范围内。
	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);
		}
	}

	// 设置此对话框的图标。当应用程序主窗口不是对话框时，框架将自动
	//  执行此操作
	SetIcon(m_hIcon, TRUE);			// 设置大图标
	SetIcon(m_hIcon, FALSE);		// 设置小图标

	// TODO: 在此添加额外的初始化代码

	return TRUE;  // 除非将焦点设置到控件，否则返回 TRUE
}

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

// 如果向对话框添加最小化按钮，则需要下面的代码
//  来绘制该图标。对于使用文档/视图模型的 MFC 应用程序，
//  这将由框架自动完成。

void CGetRGBDlg::OnPaint()
{
	if (IsIconic())
	{
		CPaintDC dc(this); // 用于绘制的设备上下文

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

		// 使图标在工作区矩形中居中
		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;

		// 绘制图标
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CWnd * pWnd = GetDlgItem(IDC_STATIC2);//get the item
		CBrush *brush ;
		brush = new CBrush(RGB(red,green,blue));//init the brush;
		CDC * pCtrlDC = pWnd->GetDC();//get the dc point
		pWnd->Invalidate();//other program can use paint()
		pWnd->UpdateWindow();//update the window
		pCtrlDC->SelectObject(brush);//select brush;
		pCtrlDC->Rectangle(0,0,91,81);//set the paint rect
		delete brush;//must delete brush,otherwise can cause memory leak;
		CDialog::OnPaint();
	}
}

//当用户拖动最小化窗口时系统调用此函数取得光标
//显示。
HCURSOR CGetRGBDlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcon);
}


void CGetRGBDlg::OnBnClickedButton1()
{
	// TODO: 在此添加控件通知处理程序代码
	GetDlgItem(IDC_BUTTON1)->EnableWindow(false);
	GetDlgItem(IDC_BUTTON2)->EnableWindow();
	SetTimer(1, 80, NULL);
	GetDlgItem(IDC_RED)->EnableWindow(false);
	GetDlgItem(IDC_GREEN)->EnableWindow(false);
	GetDlgItem(IDC_BLUE)->EnableWindow(false);
}

void CGetRGBDlg::OnEnChangeEdit1()
{
	// TODO:  如果该控件是 RICHEDIT 控件，它将不
	// 发送此通知，除非重写 CDialog::OnInitDialog()
	// 函数并调用 CRichEditCtrl().SetEventMask()，
	// 同时将 ENM_CHANGE 标志“或”运算到掩码中。

	// TODO:  在此添加控件通知处理程序代码
}

void CGetRGBDlg::OnRButtonDown(UINT nFlags, CPoint point)
{
	// TODO: 在此添加消息处理程序代码和/或调用默认值
	CAboutDlg about;
	about.DoModal();
	CDialog::OnRButtonDown(nFlags, point);
}

void CGetRGBDlg::OnTimer(UINT_PTR nIDEvent)
{
	// TODO: 在此添加消息处理程序代码和/或调用默认值
	if (nIDEvent != 1)
        return;
    
    CPoint pt;
    GetCursorPos(&pt);

    HDC hDC = ::GetDC(NULL);
    COLORREF clr = ::GetPixel(hDC, pt.x, pt.y);
    
	CString ClrText;
    ClrText.Format(_T("%d"),GetRValue(clr));
	red=GetRValue(clr);
	SetDlgItemText(IDC_RED,ClrText);
	ClrText.Format(_T("%d"),GetGValue(clr));
	green=GetGValue(clr);
	SetDlgItemText(IDC_GREEN,ClrText);
	ClrText.Format(_T("%d"),GetBValue(clr));
	blue=GetBValue(clr);
	SetDlgItemText(IDC_BLUE,ClrText);
    OnPaint();

    ::ReleaseDC(NULL, hDC);
	CDialog::OnTimer(nIDEvent);
}

void CGetRGBDlg::OnBnClickedButton2()
{
	// TODO: 在此添加控件通知处理程序代码
	KillTimer(1);//stop get  color
	GetDlgItem(IDC_BUTTON2)->EnableWindow(false);
	GetDlgItem(IDC_BUTTON1)->EnableWindow();
	GetDlgItem(IDC_RED)->EnableWindow();
	GetDlgItem(IDC_GREEN)->EnableWindow();
	GetDlgItem(IDC_BLUE)->EnableWindow();
}