另外一種實現(xiàn)平面工具欄的方法(不需要MSIE)

1、另外一種實現(xiàn)平面工具欄的方法(不需要MSIE) 在前面的文章“如何編寫類似于Word97的工具欄”中，已經(jīng)看到了一種實現(xiàn)平面工具欄的方法。事實上，它需要你的機器上要裝有 MSIE (或comctl32.dll)，這似乎有些不便。所以我自己開發(fā)出了我自己版本的平面工具欄，而不需要上面的要求。我把它稱為類CToolBarEx。 使用 CToolBarEx，你可以在平面和傳統(tǒng)方式間進行切換。更新是非常快的。 其中有些代碼你可能覺得很眼熟。其實分隔線和 gripper 的繪制代碼或多或少是從Roger的代碼中繼承來的。我為什么要做那些重復的工作。;-) 在平面模式下，由 CToolBarEx 來負責所

2、有的繪制工作; 在傳統(tǒng)的模式下，由 MFC 來完成工作。 由于 VC+ 4.2 及以后的版本提供了用戶自繪能力，我們可以通過一局部輔助類在平面模式中來模仿該特性，所以我們可以在忽略當前模式(平面或傳統(tǒng))的情況下使用該特性。如果你想進一步了解用戶自繪制的實現(xiàn)，可參見ToolBarEx.cpp文件。 CToolBarEx 包含有兩個文件： ToolBarEx.h / Copyright (C) 1997 by Joerg Koenig/ All rights reserved/ Distribute freely, except: don't remove my name from the

3、 source or/ documentation (don't take credit for my work), mark your changes (don't/ get me blamed for your possible bugs), don't alter or remove this/ notice./ No warrantee of any kind, express or implied, is included with this/ software; use at your own risk, responsibility for damages

4、 (if any) to/ anyone resulting from the use of this software rests entirely with the/ user./ Send bug reports, bug fixes, enhancements, requests, flames, etc., and/ I'll try to keep a version up to date. I can be reached as follows:/ J.Koenigadg.de (company site)/ Joerg.Koenigrhein-neckar.de (pr

5、ivate site)/#if !defined(AFX_TOOLBAREX_H_1E0F37F5_4020_11D1_9FB1_444553540000_INCLUDED_)#define AFX_TOOLBAREX_H_1E0F37F5_4020_11D1_9FB1_444553540000_INCLUDED_#if _MSC_VER >= 1000#pragma once#endif / _MSC_VER >= 1000/ ToolBarEx.h : header file/ CToolBarEx windowclass CToolBarEx : public CToolBa

6、r DECLARE_DYNAMIC(CToolBarEx)/ data membersprivate: BOOL m_bFlatLook; CSize m_sizeOffset; / real starting point of the image COLORREF m_clrBtnFace; COLORREF m_clrBtnHilight; COLORREF m_clrBtnShadow; int m_nLastBtn; / index of last formed button UINT m_uTimerEvent; CUIntArray m_Styles; HWND m_hwndPar

7、ent; / "real" parent (even in floating mode) BOOL m_bDeleteImgList; / remember the way we've built the image list CFont m_GuiFont;/ Constructionpublic: CToolBarEx();/ Attributespublic: void SetFlatLook( BOOL bFlat = TRUE ) if( bFlat != m_bFlatLook ) m_bFlatLook = bFlat; if( :IsWindow(G

8、etSafeHwnd() ) / force a repaint of all buttons Invalidate(); / erase/draw the gripper OnNcPaint(); BOOL IsFlatLook() const return m_bFlatLook; / This function I've missed in CToolBar for more than one time . void GetSizes( CSize & szBtn, CSize & szImg ) const szBtn = m_sizeButton; szImg

9、 = m_sizeImage; / Get the window to which the toolbar initially was docked. This / is not necessarily the window returned by CWnd:GetParent() or / CControlBar:GetDockingFrame(). Both these functions don't / return the expected window, if the toolbar is floating . CWnd * GetParentFrame() const re

10、turn :IsWindow(m_hwndParent) ? CWnd:FromHandle(m_hwndParent) : 0; / Operationspublic:/ Overrides / ClassWizard generated virtual function overrides /AFX_VIRTUAL(CToolBarEx) /AFX_VIRTUALprotected: virtual void OnUpdateCmdUI( CFrameWnd* pTarget, BOOL bDisableIfNoHndler );/ Implementationpublic: virtua

11、l CToolBarEx(); / Generated message map functionsprotected: /AFX_MSG(CToolBarEx) afx_msg void OnPaint(); afx_msg void OnSysColorChange(); afx_msg void OnNcCalcSize(BOOL bCalcValidRects, NCCALCSIZE_PARAMS FAR* lpncsp); afx_msg void OnMouseMove(UINT nFlags, CPoint point); afx_msg void OnNcPaint(); afx

12、_msg void OnTimer(UINT nIDEvent); afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct); /AFX_MSG afx_msg LRESULT OnSetButtonSize(WPARAM, LPARAM); afx_msg LRESULT OnSetBitmapSize(WPARAM, LPARAM); DECLARE_MESSAGE_MAP()private: / Recalculate the starting point of the button's image. void CalculateOf

13、fset() if( m_pStringMap != 0 && !m_pStringMap->IsEmpty() ) / there are strings assigned to at least one button / center the image horizontal m_sizeOffset.cx = (m_sizeButton.cx-m_sizeImage.cx)/2; / the following value calculates as follows: / The button must be big enough to hold the image

14、: / + 7 pixels on x / + 6 pixels on y / So the y-offset is "min" (6) / 2 = 3 m_sizeOffset.cy = 3; else / no button has text assigned: center the image on the button m_sizeOffset.cx = (m_sizeButton.cx-m_sizeImage.cx)/2; m_sizeOffset.cy = (m_sizeButton.cy-m_sizeImage.cy)/2; / some special dr

15、awing functions: void DrawDisabledButton( CDC &, const CRect & ) const; void DrawSeparator( CDC &, CRect & ) const; void DrawGripper( CDC & ) const; HIMAGELIST GetImageList();/AFX_INSERT_LOCATION/ Microsoft Developer Studio will insert additional declarations immediately before t

16、he previous line.#endif / !defined(AFX_TOOLBAREX_H_1E0F37F5_4020_11D1_9FB1_444553540000_INCLUDED_)ToolBarEx.cpp / Copyright (C) 1997 by Joerg Koenig/ All rights reserved/ Distribute freely, except: don't remove my name from the source or/ documentation (don't take credit for my work), mark y

17、our changes (don't/ get me blamed for your possible bugs), don't alter or remove this/ notice./ No warrantee of any kind, express or implied, is included with this/ software; use at your own risk, responsibility for damages (if any) to/ anyone resulting from the use of this software rests en

18、tirely with the/ user./ Send bug reports, bug fixes, enhancements, requests, flames, etc., and/ I'll try to keep a version up to date. I can be reached as follows:/ J.Koenigadg.de (company site)/ Joerg.Koenigrhein-neckar.de (private site)/ ToolBarEx.cpp : implementation file/ Description:/ CTool

19、BarEx provides additional features to the standard toolbar/ "CToolBar". The main addition is the flat mode (last seen in/ Developer Studio 5.0)./ There are no special requirements for having the flat mode in your/ application (no special comctl32.dll or what ever)!/ If you need custom draw

20、 abilities, then you have to use VC+ >= 4.2/ However, the flat mode should work with older versions of VC+ too (let/ me know of your experiences!)/ Usage:/ The only task you have to perform, is to/ #include "ToolBarEx.h"/ in either StdAfx.h or MainFrm.h and to change the type of/ CMainF

21、rame:m_wndToolBar from CToolBar to CToolBarEx./ Don't forget to recompile :-)/ Acknowledgements:/ o The main idea of how to draw a separator and the gripper is stolen/ from Roger Onslow's MSIE flat toolbar./ Thanks for saving my time, Roger ;-)/ o The embossed drawing of a disabled image cam

22、e from/ Victor M. Vogelpoel (victorvtelic.nl)/ o Some hints for buttons with text came from/ (I'm still thinking, text on toolbar-buttons is broken./ That has to be tooltip's work. However, texts on buttons/ now work)/ (known) bugs and limitations:/ o the CDRF_NEWFONT notification is still u

23、ntested ./ o Assigning texts to buttons may cause the buttons to/ resize horizontally without notified by CToolBar. This/ leads to a wrong calculation inside CalcDynamicLayout()/ and CalcFixedLayout(). One could override both these/ functions in derived classes to avoid that problem,/ but that would

24、 be a greater pain ./ if you find others (and have a solution for them ?!), please let me know:/ Joerg.Koenigrhein-neckar.de (private site) or/ J.Koenigadg.de (company site)/ Changes:/ 11/07/97/ (2 minor bugs have been occured as a result of the last update :)/ o The WRAP state of a separator will b

25、e ignored now, if/ the bar is docked vertically/ o Draw an image transparently. This is needed only if one/ uses 256 color images./ 10/30/97/ o texts on buttons now work/ o gripper improved for a closer look like Office97/ o disabled images now look embossed/ o a separator is drawn only if it has no

26、 WRAP state set#include "stdafx.h"#include "ToolBarEx.h"#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE = _FILE_;#endif/ local helper class CCustomDrawInfo/ The helper class CCustomDrawInfo handles the messaging to the docking/ frame of the toolbar in flat

27、 mode only. If flat-mode is disabled, then/ MFC's own messanger will be used./ A few words about custom draw on toolbars:/ o custom draw is possible for MFC >= 4.2 only (older versions don't know/ anything about certain structures .)/ o MFC does not set the "rc" member of NMCUST

28、OMDRAW to the rectangle of the/ button that will be drawn. However, we do, so watch out, wether the/ toolbar is flat or not (or ignore the "rc" member in both cases)./ If the current mode is not "flat", then MFC's art of message arrives ./ o MFC does not send a message for se

29、parators, so we too don't do it./ o It seems that MFC toolbars never send *ERASE notifications; instead they/ send TBN_QUERYDELETE for instance./ o The CDRF_NEWFONT notification result is ignored (in flat mode. Never/ tried with original MFC, because it is broken on toolbars)./class CCustomDrawI

30、nfo #if _MFC_VER >= 0x0420 NMCUSTOMDRAW m_CDRW; / custom draw information holder LRESULT m_PrePaint; / result from prepaint notification LRESULT m_ItemPrePaint; / dito for specific item CToolBarEx * m_pToolBar; / the real sender of the notification CWnd * m_pReceiver; / the receiver of the notifi

31、cation LRESULT NotifyParent();#endif / _MFC_VER public: / construction CCustomDrawInfo( CDC & dc, CToolBarEx * pToolBar ); public: / NotifyItemPrePaint() returns TRUE, / if the user wants to do the default / (CDRF_DODEFAULT) or FALSE, if the / user wants to skip (CDRF_SKIPDEFAULT) / Note that CD

32、RF_SKIPDEFAULT is not / allowed for CDDS_PREPAINT, CDDS_POSTPAINT ! / and CDDS_ITEMPOSTPAINT void NotifyPrePaint(); BOOL NotifyItemPrePaint(int item); void NotifyItemPostPaint(int item); void NotifyPostPaint();#if _MFC_VER >= 0x420 LRESULT CCustomDrawInfo : NotifyParent() LRESULT lRes = CDRF_DODE

33、FAULT; if( m_pReceiver ) lRes = m_pReceiver->SendMessage(WM_NOTIFY, LPARAM(&m_CDRW); return lRes; CCustomDrawInfo : CCustomDrawInfo( CDC & dc, CToolBarEx * pBar ) : m_PrePaint(0) , m_ItemPrePaint(0) VERIFY(m_pToolBar = pBar) != 0); VERIFY(m_CDRW.hdc = dc.GetSafeHdc() != 0); HWND hwnd = pB

34、ar->GetSafeHwnd(); VERIFY(:IsWindow(hwnd); / initialise the NMHDR member of the customdraw structure / Do not use CControlBar:GetDockingFrame() to receive / the parent. CWnd:GetParent() is inacceptable too. / Both these functions don't work, if the toolbar is / floating in the air! m_pReceive

35、r = pBar->GetParentFrame(); if( m_pReceiver ) VERIFY(:IsWindow(m_pReceiver->GetSafeHwnd(); void CCustomDrawInfo : NotifyPrePaint() / fill the customdraw structure with values for CDDS_PREPAINT m_CDRW.dwDrawStage = CDDS_PREPAINT; / the rest of the structure stays undefined in this stage / of dr

36、awing. m_PrePaint = NotifyParent(); BOOL CCustomDrawInfo : NotifyItemPrePaint( int nItem ) BOOL bRet = TRUE; / we assume to do the default if( m_PrePaint & CDRF_NOTIFYITEMDRAW ) m_CDRW.dwDrawStage = CDDS_ITEMPREPAINT; m_pToolBar->GetItemRect(nItem, &m_CDRW.rc); m_CDRW.dwItemSpec = DWORD(m

37、_pToolBar->GetItemID(nItem); UINT uStyle = m_pToolBar->GetButtonStyle(nItem); BOOL bEnable = m_pToolBar->GetToolBarCtrl() .IsButtonEnabled(m_CDRW.dwItemSpec); m_CDRW.uItemState = (bEnable ? 0 : CDIS_DISABLED) | (uStyle & TBBS_PRESSED) | (uStyle & TBBS_CHECKED) ? CDIS_CHECKED : 0); m

38、_CDRW.lItemlParam = 0; m_ItemPrePaint = NotifyParent(); if( m_ItemPrePaint & CDRF_SKIPDEFAULT ) bRet = FALSE; return bRet; void CCustomDrawInfo : NotifyItemPostPaint( int nItem ) if( m_ItemPrePaint & CDRF_NOTIFYPOSTPAINT ) m_CDRW.dwDrawStage = CDDS_ITEMPOSTPAINT; / the rest of the data has n

39、ot been changed since ITEMPREPAINT / make sure it is so: ASSERT(m_pToolBar->GetItemID(nItem) = m_CDRW.dwItemSpec); NotifyParent(); void CCustomDrawInfo : NotifyPostPaint() if( m_PrePaint & CDRF_NOTIFYPOSTPAINT ) m_CDRW.dwDrawStage = CDDS_POSTPAINT; NotifyParent(); #else / _MFC_VER < 4.2 CC

40、ustomDrawInfo : CCustomDrawInfo( CDC & dc, CWnd * pParent ) void CCustomDrawInfo : NotifyPrePaint() void CCustomDrawInfo : NotifyPostPaint() BOOL CCustomDrawInfo : NotifyItemPrePaint( int ) return TRUE; / we always make the drawing by ourself void CCustomDrawInfo : NotifyItemPostPaint( int ) #en

41、dif / _MFC_VER/ CToolBarExCToolBarEx:CToolBarEx() : m_bFlatLook(TRUE) , m_clrBtnFace(:GetSysColor(COLOR_BTNFACE) , m_clrBtnHilight(:GetSysColor(COLOR_BTNHILIGHT) , m_clrBtnShadow(:GetSysColor(COLOR_BTNSHADOW) , m_nLastBtn(-1) , m_uTimerEvent(0) CalculateOffset(); / create the default font, used for

42、buttons with text CFont Font; BOOL bOldSys = FALSE; if( ! Font.CreateStockObject( DEFAULT_GUI_FONT ) ) / older versions of Windows* (NT 3.51 for instance) / fail with DEFAULT_GUI_FONT VERIFY( Font.CreateStockObject( SYSTEM_FONT ) ); bOldSys = TRUE; LOGFONT logfont ; Font.GetLogFont( &logfont ) ;

43、 if( bOldSys ) logfont.lfWeight = 400; strcpy(logfont.lfFaceName,"MS Sans Serif"); logfont.lfHeight = 6 ; logfont.lfWidth = 0 ; / let windows compute this. VERIFY( m_GuiFont.CreateFontIndirect( &logfont ) ) ;CToolBarEx:CToolBarEx()IMPLEMENT_DYNAMIC(CToolBarEx, CToolBar)BEGIN_MESSAGE_MA

44、P(CToolBarEx, CToolBar) /AFX_MSG_MAP(CToolBarEx) ON_WM_PAINT() ON_WM_SYSCOLORCHANGE() ON_WM_NCCALCSIZE() ON_WM_MOUSEMOVE() ON_WM_NCPAINT() ON_WM_TIMER() ON_WM_CREATE() /AFX_MSG_MAP ON_MESSAGE(TB_SETBUTTONSIZE, OnSetButtonSize) ON_MESSAGE(TB_SETBITMAPSIZE, OnSetBitmapSize)END_MESSAGE_MAP()/ CToolBarE

45、x message handlersLRESULT CToolBarEx : OnSetButtonSize(WPARAM wParam, LPARAM lParam) LRESULT lResult = CToolBar:OnSetButtonSize(wParam, lParam); if( lResult ) CalculateOffset(); return lResult;LRESULT CToolBarEx : OnSetBitmapSize(WPARAM wParam, LPARAM lParam) LRESULT lResult = CToolBar:OnSetBitmapSi

46、ze(wParam, lParam); if( lResult ) CalculateOffset(); return lResult;void CToolBarEx:OnPaint() HIMAGELIST hImg = GetImageList();#ifdef _DEBUG if( hImg = 0 ) TRACE0("CToolBarEx:OnPaint(): could not get image listn"); #endif if( m_bFlatLook && hImg ) CRect rcUpdate; if( ! GetUpdateRec

47、t(rcUpdate) ) return; if( m_pStringMap && !m_pStringMap->IsEmpty() ) CalculateOffset(); / strings may have been added / attach image-list for even more MFC feeling :) CImageList imglist; imglist.Attach(hImg); POINT cursor; :GetCursorPos(&cursor); ScreenToClient(&cursor); CPaintDC dc(this); / device context for painting CFont * pOldFont = dc.SelectObject(&m_GuiFont); / Now it's time for the first custom-draw-notification. CCustomDrawInfo cdrw(dc, this); cdrw.NotifyPrePaint(); register const int nBtn = GetToolBarCtrl().GetButtonCount(); for( register int i