// atlctrls.h
typedef CUpDownCtrlT<ATL::CWindow>   CUpDownCtrl;
			

// stdafx.h
#pragma once

#include <atlbase.h>
#include <atlapp.h>
extern CAppModule _Module;
#include <atlwin.h>

#include <atlcrack.h>
#include <atlmisc.h>
#include <atlctrls.h>  // コントロール用クラスを使用するため
			

// MainDlg.h
#pragma once

class CMainDlg : public CDialogImpl<CMainDlg>
{
public:
    enum { IDD = IDD_MAINDLG };

    CUpDownCtrl m_updown_r;   // [R]用
    CUpDownCtrl m_updown_g;   // [G]用
    CUpDownCtrl m_updown_b;   // [B]用

    CRect m_rect;             // 色表示用矩形

    BEGIN_MSG_MAP(CMainDlg)
        MSG_WM_PAINT(OnPaint)
        MSG_WM_INITDIALOG(OnInitDialog)
        COMMAND_HANDLER_EX(IDC_EDIT_R, EN_CHANGE, OnEditChangeR)
        COMMAND_HANDLER_EX(IDC_EDIT_G, EN_CHANGE, OnEditChangeG)
        COMMAND_HANDLER_EX(IDC_EDIT_B, EN_CHANGE, OnEditChangeB)
        COMMAND_ID_HANDLER_EX(IDOK, OnOK)
        COMMAND_ID_HANDLER_EX(IDCANCEL, OnCancel)
    END_MSG_MAP()

    BOOL OnInitDialog(CWindow wndFocus, LPARAM lInitParam){
        // スクリーンの中央に配置
        CenterWindow();

        // 大きいアイコン設定
        HICON hIcon = AtlLoadIconImage(IDR_MAINFRAME, LR_DEFAULTCOLOR,
            ::GetSystemMetrics(SM_CXICON), ::GetSystemMetrics(SM_CYICON));
        SetIcon(hIcon, TRUE);
        
        // 小さいアイコン設定
        HICON hIconSmall = AtlLoadIconImage(IDR_MAINFRAME, LR_DEFAULTCOLOR,
            ::GetSystemMetrics(SM_CXSMICON), ::GetSystemMetrics(SM_CYSMICON));
        SetIcon(hIconSmall, FALSE);

        // コントロール設定
        m_updown_r = GetDlgItem(IDC_SPIN_R);
        m_updown_g = GetDlgItem(IDC_SPIN_G);
        m_updown_b = GetDlgItem(IDC_SPIN_B);

        m_updown_r.SetRange(0, 255);
        m_updown_g.SetRange(0, 255);
        m_updown_b.SetRange(0, 255);

        // 色表示用矩形を取得
        CStatic view = GetDlgItem(IDC_STATIC_VIEW);
        view.GetWindowRect(m_rect);
        ScreenToClient(m_rect);

        return TRUE;
    }

    void OnPaint(CDCHandle /*dc*/){
        CPaintDC dc(m_hWnd);

        CBrush brush;
        brush.CreateSolidBrush(RGB(m_updown_r.GetPos(),
            m_updown_g.GetPos(), m_updown_b.GetPos()));

        dc.FillRect(m_rect, brush);
    }

    void CheckAndUpdate(CUpDownCtrl& updown){
        if(updown.m_hWnd != NULL){
            // 範囲チェック
            BOOL bError;
            updown.GetPos(&bError);
            if(bError)
                updown.SetPos(255);
        }
        InvalidateRect(m_rect);
    }

    void OnEditChangeR(UINT uNotifyCode, int nID, CWindow wndCtl){
        CheckAndUpdate(m_updown_r);
    }

    void OnEditChangeG(UINT uNotifyCode, int nID, CWindow wndCtl){
        CheckAndUpdate(m_updown_g);
    }

    void OnEditChangeB(UINT uNotifyCode, int nID, CWindow wndCtl){
        CheckAndUpdate(m_updown_b);
    }

    void OnOK(UINT uNotifyCode, int nID, CWindow wndCtl){
        EndDialog(nID);
    }

    void OnCancel(UINT uNotifyCode, int nID, CWindow wndCtl){
        EndDialog(nID);
    }
};
			

// SampleProject.cpp
#include "stdafx.h"
#include "resource.h"
#include "MainDlg.h"

CAppModule _Module;

int WINAPI _tWinMain(HINSTANCE hInstance, 
    HINSTANCE /*hPrevInstance*/, LPTSTR /*lpstrCmdLine*/, int /*nCmdShow*/)
{
    HRESULT hRes = ::CoInitialize(NULL);
    ATLASSERT(SUCCEEDED(hRes));

    ::DefWindowProc(NULL, 0, 0, 0L);

    AtlInitCommonControls(ICC_WIN95_CLASSES);

    hRes = _Module.Init(NULL, hInstance);
    ATLASSERT(SUCCEEDED(hRes));

    CMainDlg dlg;
    int nRet = (int) dlg.DoModal();

    _Module.Term();
    ::CoUninitialize();

    return nRet;
}