WTL 自绘控件库 (CQsRadioBox)

概述：

CQsRadioBox基础与 CButton，通过自绘来实现实现Radion Box的效果，通过BST_CHECKED 属性来实现。

代码实现如下：

#pragma once
#include "QsInclude.h"#define  MAXRADIOXTXT       512#define      QS_RAD_SYSYSTEM             0x00000001          //RadioBox系统样式
#define     QS_RAD_OWNERDRAW        0x00000002          //RadioBox自绘样式，默认为自绘样式。class CQsRadioBox :public CWindowImpl<CQsRadioBox, CButton>,public CImageMgrCtrlBase< CQsRadioBox>,public COwnerDraw< CQsRadioBox >
{typedef CWindowImpl< CQsRadioBox, CButton > theBaseClass;typedef CImageMgrCtrlBase< CQsRadioBox > theImageCtrlBaseClass;Image *m_pCurImage;                            //当前正在使用的图片Image *m_pLastImage;                         //发生状态改变前使用的图片volatile int m_nCheck;                            //是否被选中标志volatile bool m_bMouseDown;             //鼠标左键按下Color m_enableColor;                       //可用状态时字体的颜色Color m_unenableColor;                  //不可用状态时字体的颜色
public:BEGIN_MSG_MAP( CQsRadioBox )MESSAGE_HANDLER( WM_ERASEBKGND, OnEraseBKGnd )MESSAGE_HANDLER( WM_LBUTTONDOWN, OnLButtonDown )MESSAGE_HANDLER( WM_LBUTTONUP, OnLButtonUp )MESSAGE_HANDLER( WM_MOUSELEAVE, OnMouseLeave )MESSAGE_HANDLER( WM_MOUSEMOVE, OnMouseMove )MESSAGE_HANDLER( BM_SETCHECK, OnSetCheck )MESSAGE_HANDLER( BM_GETCHECK, OnGetCheck )REFLECTED_COMMAND_CODE_HANDLER( BN_CLICKED, OnClicked )CHAIN_MSG_MAP_ALT( COwnerDraw< CQsRadioBox >, 1 )CHAIN_MSG_MAP( theImageCtrlBaseClass )DEFAULT_REFLECTION_HANDLER()END_MSG_MAP()/***@method   CQsRadioBox*@brief    CQsRadioBox类构造函数*    *@return   */CQsRadioBox():m_bMouseDown( false ),m_pCurImage( NULL ),m_pLastImage( NULL ),m_enableColor(255, 0, 0, 0),m_unenableColor(255, 128, 128, 128),m_nCheck( 0 ){m_uFirstPos = CONTROL_RDB_FIRST;m_uLastPos = CONTROL_RDB_LAST;SetQsStyle(QS_RAD_OWNERDRAW);}/***@method   ~CQsRadioBox*@brief    CQsRadioBox析构造函数*    *@return   */virtual ~CQsRadioBox(){}/***@method   DrawItem*@brief    按钮重画函数*    *@param    LPDRAWITEMSTRUCT lpdis 详见MSN*@return   void*/void DrawItem( LPDRAWITEMSTRUCT lpdis ){int width = lpdis->rcItem.right - lpdis->rcItem.left;int height = lpdis->rcItem.bottom - lpdis->rcItem.top;//创建内存作图对象WTL::CDC memDC;memDC.CreateCompatibleDC( lpdis->hDC );WTL::CBitmap memBitmap;memBitmap.CreateCompatibleBitmap( lpdis->hDC, width, height );HBITMAP hOldBmp = memDC.SelectBitmap( memBitmap );//获得控件背景memDC.SetBkMode( TRANSPARENT );::SendMessage( GetParent(), WM_DRAWBKGNDUI, ( WPARAM )memDC.m_hDC, ( LPARAM )lpdis->hwndItem );//绘制按钮DrawButton( memDC.m_hDC, lpdis->rcItem );//提交图像::BitBlt( lpdis->hDC, 0, 0, width, height, memDC.m_hDC, 0, 0, SRCCOPY );memDC.SelectBitmap( hOldBmp );memBitmap.DeleteObject();memDC.DeleteDC();}/***@method   Create*@brief    通过Create来创建窗口。*    *@param    HWND hWndParent  parent window*@param    ATL::_U_RECT rect = NULL create window rect*@param    LPCTSTR szWindowName = NULL the window name*@param    DWORD dwStyle = 0  base window style*@param    DWORD dwExStyle = 0  extended window style*@param    ATL::_U_MENUorID MenuOrID = 0U menu or ID*@param    LPVOID lpCreateParam = NULL create param*@return   HWND 非NULL success return TRUE, failed return NULL*/HWND Create(HWND hWndParent, ATL::_U_RECT rect = NULL, LPCTSTR szWindowName = NULL,DWORD dwStyle = 0, DWORD dwExStyle = 0,ATL::_U_MENUorID MenuOrID = 0U, LPVOID lpCreateParam = NULL){return theBaseClass::Create( hWndParent, rect.m_lpRect, szWindowName, dwStyle, dwExStyle, MenuOrID.m_hMenu, lpCreateParam);}/***@method   SubclassWindow*@brief    类对象关联*    *@param    HWND hWnd  对象句柄*@return   BOOL*/BOOL SubclassWindow( HWND hWnd ){//在此之前可能已经SetCheckm_nCheck = (int)::SendMessage( hWnd, BM_GETCHECK, 0, 0 );BOOL bRet = theBaseClass::SubclassWindow( hWnd );if(m_dwQsStyle&QS_RAD_OWNERDRAW){UINT nBS = GetButtonStyle();SetButtonStyle( nBS | BS_OWNERDRAW );}return bRet;}/***@method   SetEnableColor*@brief    设置可用时字体的颜色。*    *@param    Color enableColor 可用时字体的颜色*@return   void*/void SetEnableColor(Color enableColor){m_enableColor =  enableColor;}/***@method   SetUnEnableColor*@brief    设置不可用时字体的颜色*    *@param    Color unenableColor 不可用时字体的颜色*@return   void*/void SetUnEnableColor(Color unenableColor){m_unenableColor = unenableColor;}
protected:/***@method   OnSetCheck*@brief    设置状态消息响应函数*    *@param    UINT uMsg  消息类型*@param    WPARAM wParam 未被使用*@param    LPARAM lParam 详见MSDN*@param    BOOL& bHandled     未被使用*@return   LRESULT*/LRESULT OnSetCheck( UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& /*bHandled*/ ){if(m_dwQsStyle&QS_RAD_SYSYSTEM){return DefWindowProc(uMsg, wParam, lParam); }//首先获得check标志m_nCheck = ( wParam != 0 );if( m_nCheck ){CSimpleArray< HWND > lst;lst.Add( m_hWnd );//获得父窗口句柄HWND hWndParent = GetParent().m_hWnd;//获得控件窗口句柄HWND hWnd = m_hWnd;while( hWnd ){//获得同组内控件的窗口句柄hWnd = ::GetNextDlgGroupItem( hWndParent, hWnd, 0 );//在list中查找这个句柄是否被查询到过int nPos = lst.Find( hWnd );if( nPos != -1 ){//如果找到了这个句柄，那就代表搜索到头了hWnd = NULL;}if( NULL != hWnd ){//如果没有搜索完一组，则把当前搜索的句柄添加到list中去（目的是为了不让同一控件被发送两次消息）lst.Add( hWnd );//对这个控件发送unChecked消息::PostMessage( hWnd, BM_SETCHECK, (WPARAM)BST_UNCHECKED, 0 );}}}Invalidate();return 0;}/***@method   OnGetCheck*@brief    读取状态消息响应函数*    *@param    UINT uMsg  消息类型*@param    WPARAM wParam 未被使用*@param    LPARAM lParam 详见MSDN*@param    BOOL& bHandled    未被使用*@return   LRESULT*/LRESULT OnGetCheck( UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& /*bHandled*/ ){if(m_dwQsStyle&QS_RAD_SYSYSTEM){return DefWindowProc(uMsg, wParam, lParam); }return m_nCheck;}/***@method   OnLButtonDown*@brief      鼠标左键被按下消息响应函数*    *@param    UINT uMsg  消息类型*@param    WPARAM wParam 未被使用*@param    LPARAM lParam 详见MSDN*@param    BOOL& bHandled    未被使用*@return   LRESULT*/LRESULT OnLButtonDown( UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& bHandled ){m_bMouseDown = true;Invalidate();bHandled = FALSE;return 0;}/***@method   OnMouseMove*@brief    鼠标进入消息响应函数*    *@param    UINT uMsg  消息类型*@param    WPARAM wParam 未被使用*@param    LPARAM lParam 详见MSDN*@param    BOOL& bHandled    未被使用*@return   LRESULT*/LRESULT OnMouseMove( UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& bHandled ){if( m_pCurImage != GetImage( CONTROL_BTN_MOUSEIN ) ){Invalidate();// 启动鼠标离开时间TRACKMOUSEEVENT tme;tme.cbSize  = sizeof(tme);tme.hwndTrack = m_hWnd;tme.dwFlags = TME_LEAVE;TrackMouseEvent(&tme);}bHandled = FALSE;return 0;}/***@method   OnMouseLeave*@brief    鼠标离开消息响应函数*    *@param    UINT uMsg    消息类型*@param    WPARAM wParam 未被使用*@param    LPARAM lParam 详见MSDN*@param    BOOL& bHandled   未被使用*@return   LRESULT*/LRESULT OnMouseLeave( UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& bHandled ){Invalidate();bHandled = FALSE;return 0;}/***@method   OnLButtonUp*@brief        鼠标左键被放开消息响应函数*    *@param    UINT uMsg  消息类型*@param    WPARAM wParam 未被使用*@param    LPARAM lParam 详见MSDN*@param    BOOL& bHandled   未被使用*@return   LRESULT*/LRESULT OnLButtonUp( UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& bHandled ){m_bMouseDown = false;Invalidate();bHandled = FALSE;return 0;}/***@method   OnEraseBKGnd*@brief    背景绘制消息函数*    *@param    UINT uMsg     消息类型*@param    WPARAM wParam 未被使用*@param    LPARAM lParam 详见MSDN*@param    BOOL& bHandled  未被使用*@return   LRESULT*/LRESULT OnEraseBKGnd( UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/ ){//禁止绘制底色return 0;}/***@method   OnClicked*@brief      按钮被按下消息响应函数*    *@param    WORD wNotifyCode     通知消息代码*@param    WORD wID    发送该消息的控件ID*@param    HWND hWndCtl 发送该消息的控件的句柄*@param    BOOL& bHandled  消息是否继续处理标志*@return   LRESULT*/LRESULT OnClicked(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/){SetCheck( BST_CHECKED );Invalidate();return 0;}private:/***@method   GetButtonTextFormat*@brief    得到Button文字的对齐方式(用DrawText()输出时的格式）*    *@param    const LONG lStyle 控件风格*@return   UINT  输出时的格式* 说  明: button上的字必须是一行*/UINT GetButtonTextFormat(const LONG lStyle){UINT uFormat = DT_SINGLELINE;//button上的字必须是一行//x方向if ( (lStyle & BS_CENTER)==BS_CENTER )//x方向，中{uFormat |= DT_CENTER;}else if ( (lStyle & BS_RIGHT)==BS_RIGHT )//x方向，右{uFormat |= DT_RIGHT;}else if ( (lStyle & BS_LEFT) == BS_LEFT )//x方向，左{uFormat |= DT_LEFT;}else//缺省，x中{uFormat |= DT_LEFT;}//y方向if ( (lStyle & BS_VCENTER ) == BS_VCENTER )//y，中{uFormat |= DT_VCENTER;}else if ( (lStyle & BS_TOP)==BS_TOP )//y方向，上{uFormat |= DT_TOP;}else if ( (lStyle & BS_BOTTOM)==BS_BOTTOM )//y方向，下{uFormat |= DT_BOTTOM;}else//缺省，y中{uFormat |= DT_VCENTER;}return uFormat;}/***@method   DrawButton*@brief    绘制按钮函数*    *@param    HDC hDC   作图设备句柄*@param    RECT itemRect 按钮位置*@return   void*/void DrawButton( HDC hDC, RECT /*itemRect*/ ){HDC hdc = hDC;WTL::CDCHandle dc( hDC );SetBkMode( hdc, TRANSPARENT );LONG lStyle = GetWindowLong( GWL_STYLE );BOOL bIsDisabled = ( ( lStyle & WS_DISABLED ) != 0 ); //是否被禁止BOOL bIsChecked = ( GetCheck() == BST_CHECKED );//判断鼠标是否在按钮上CRect rc;GetWindowRect( rc );POINT pt;GetCursorPos( &pt );Image *pImg = NULL;UINT uStateFont = CONTROL_BTN_NORMAL;//如果当前处于失效状态if( bIsDisabled ){if( bIsChecked )//如果当前被选择{pImg = ( GetImage( CONTROL_RDB_DISCHECKED ) != NULL ? GetImage( CONTROL_RDB_DISCHECKED ) : GetImage ( CONTROL_RDB_CHECKED ) );uStateFont = CONTROL_RDB_DISCHECKED;  }else{pImg = ( GetImage( CONTROL_RDB_DISUNCHECK ) != NULL ? GetImage( CONTROL_RDB_DISUNCHECK ) : GetImage( CONTROL_RDB_DISCHECKED ) );uStateFont = CONTROL_RDB_DISUNCHECK;  //CONTROL_RDB_DISUNCHECK}}else{if( bIsChecked )//如果当前被选择{pImg = GetImage( CONTROL_RDB_CHECKED );uStateFont = CONTROL_RDB_CHECKED;}else{pImg = GetImage( CONTROL_RDB_UNCHECK );uStateFont = CONTROL_RDB_UNCHECK;}}//如果没有对应状态的图片if( pImg == NULL ){if( m_pCurImage != NULL ){pImg = m_pCurImage;}else{pImg = GetImage( CONTROL_BTN_NORMAL );uStateFont = CONTROL_BTN_NORMAL;}}//如果当前图片相同if( m_pCurImage != pImg ){//保存上一个状态的图片if( NULL != m_pCurImage){m_pLastImage = m_pCurImage;}else{m_pLastImage = pImg;}m_pCurImage = pImg;}//绘制图片Graphics graph( hDC );int titleStart = 0;if( m_pCurImage != NULL ){graph.SetPageScale( 1.0 );graph.SetPageUnit( UnitPixel ); graph.SetSmoothingMode( SmoothingModeNone );titleStart = m_pCurImage->GetWidth( );graph.DrawImage( m_pCurImage, 0, 0, titleStart, m_pCurImage->GetHeight() );}// 显示标题TCHAR tstrTitle[MAXRADIOXTXT] = _T("");GetWindowText( tstrTitle, MAXRADIOXTXT);CRect rtWnd;GetWindowRect( &rtWnd );ScreenToClient( &rtWnd );HFONT hFont = GetStateFont(uStateFont); //得到的Font要求销毁！Gdiplus::Font fontTitle(hDC,hFont);StringFormat format;UINT uStyle = GetButtonStyle();if ( BS_PUSHLIKE & uStyle ){CRect rtfTitle( 0, 0, rtWnd.Width(), rtWnd.Height() );format.SetAlignment(StringAlignmentCenter);format.SetLineAlignment(StringAlignmentCenter);if(!bIsDisabled) //失效状态{HFONT hOldFont = dc.SelectFont( hFont );dc.SetTextColor(m_enableColor.ToCOLORREF());dc.DrawText( tstrTitle, -1, &rtfTitle, GetButtonTextFormat( lStyle ) );dc.SelectFont( hOldFont );//SolidBrush sbTitle(m_enableColor);//graph.DrawString( tstrTitle,(int) _tcslen(tstrTitle), &fontTitle, rtfTitle, &format, &sbTitle );}else{HFONT hOldFont = dc.SelectFont( hFont );dc.SetTextColor(m_unenableColor.ToCOLORREF());dc.DrawText( tstrTitle, -1, &rtfTitle, GetButtonTextFormat( lStyle ) );dc.SelectFont( hOldFont );//SolidBrush sbTitle(m_unenableColor);//graph.DrawString( tstrTitle,(int) _tcslen(tstrTitle), &fontTitle, rtfTitle, &format, &sbTitle );}}else{  CRect rtfTitle( titleStart, 0, rtWnd.Width() - titleStart, rtWnd.Height() );format.SetAlignment( StringAlignmentNear );format.SetLineAlignment( StringAlignmentCenter );if(!bIsDisabled) //失效状态{HFONT hOldFont = dc.SelectFont( hFont );dc.SetTextColor(m_enableColor.ToCOLORREF());dc.DrawText( tstrTitle, -1, &rtfTitle, GetButtonTextFormat( lStyle ) );dc.SelectFont( hOldFont );//    SolidBrush sbTitle(m_enableColor);//    graph.DrawString( tstrTitle, (int)_tcslen(tstrTitle), &fontTitle, rtfTitle, &format, &sbTitle );}else{HFONT hOldFont = dc.SelectFont( hFont );dc.SetTextColor(m_unenableColor.ToCOLORREF());dc.DrawText( tstrTitle, -1, &rtfTitle, GetButtonTextFormat( lStyle ) );dc.SelectFont( hOldFont );//SolidBrush sbTitle(m_unenableColor);//graph.DrawString( tstrTitle, (int)_tcslen(tstrTitle), &fontTitle, rtfTitle, &format, &sbTitle );}}graph.ReleaseHDC( hDC );DeleteObject( hFont );}
};

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WTL 自绘控件库 (CQsRadioBox)

概述：

代码实现如下：

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