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1、VC+实现工具栏上添加平面组合框控件网站建设- 找友创互联 开网店- 找友创互联 0 元招收代理【CN 域名 0.5 元】 http:/ 2008 年 11 月 13 日 社区交流关键字： xcopy AppBuilder CRecordSet FileMapping File Mapping VC+实现工具栏上添加平面组合框控件。 但是仅仅产生平面组合框是不够的，必须实现组合框的消息响应函数，才能方便地运用组合框。在 Vsiaul C+中，消息响应函数通常都是用类向导来实现，但是此处由于组合框是用函数创建的，所以必须亲自动手来写代码，也并不麻烦，与类向导生成的代码格式是一样的，可以参照来写。
2、下面代码定义了组合框的选择变化消息响应函数：/BEGIN_MESSAGE_MAP(CMainFrame, CFrameWnd)/AFX_MSG_MAP(CMainFrame)ON_WM_CREATE()ON_CBN_SELENDOK(ID_TOOL_ZOOM, OnSelectZoomed)/AFX_MSG_MAPEND_MESSAGE_MAP()/afx_msg void OnSelectZoomed();二、编程步骤1、启动 Visual C+6.0，生成一个单文档项目，将该项目命名为ToolBar；2、通过资源编辑器新增一个工具按钮，Caption设置为空，ID 资源标志符命名为 ID_
3、TOOL_ZOOM；3、启动 Class Wizard 从 CToolBar 派生一个新类 CMainToolBar；4、在 MainFrm.h 文件中添加#include MainToolBar.h语句，然后找到 CToolBar m_wndToolBar 语句，用 CMainToolBar 代替 CToolBar；5、添加代码，编译运行程序。三、程序代码/ FlatComboBox.h : header file#if !defined(FLATCOMBOBOX_H_INCLUDED)#define FLATCOMBOBOX_H_INCLUDED#if _MSC_VER 1000#prag
4、ma once#endif / _MSC_VER 1000#define FC_DRAWNORMAL 0x00000001#define FC_DRAWRAISED 0x00000002#define FC_DRAWPRESSD 0x00000004/ CFlatComboBox windowclass CFlatComboBox : public CComboBox/ Constructionpublic: CFlatComboBox();/ Attributespublic:bool m_bLBtnDown;COLORREF m_clrHilite;COLORREF m_clrShadow
5、;COLORREF m_clrDkShad;COLORREF m_clrButton;/ Operationspublic:void DrawCombo(DWORD dwStyle, COLORREF clrTopLeft,COLORREF clrBottomRight);int Offset();/ Overrides/ ClassWizard generated virtual function overrides /AFX_VIRTUAL(CFlatComboBox)/AFX_VIRTUAL/ Implementationpublic:virtual CFlatComboBox();/
6、Generated message map functionsprotected:/AFX_MSG(CFlatComboBox)afx_msg void OnMouseMove(UINT nFlags, CPoint point);afx_msg void OnLButtonDown(UINT nFlags, CPoint point);afx_msg void OnLButtonUp(UINT nFlags, CPoint point);afx_msg void OnTimer(UINT nIDEvent);afx_msg void OnPaint();/AFX_MSGDECLARE_MES
7、SAGE_MAP();#endif / !defined(FLATCOMBOBOX_H_INCLUDED)/#include stdafx.h#include FlatComboBox.h#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE = _FILE_;#endif/ CFlatComboBoxCFlatComboBox:CFlatComboBox()m_bLBtnDown = false;CFlatComboBox:CFlatComboBox()BEGIN_MESSAGE_MAP(CFlatCom
8、boBox, CComboBox)/AFX_MSG_MAP(CFlatComboBox)ON_WM_MOUSEMOVE()ON_WM_LBUTTONDOWN()ON_WM_LBUTTONUP()ON_WM_TIMER()ON_WM_PAINT()/AFX_MSG_MAPEND_MESSAGE_MAP()/ CFlatComboBox message handlersvoid CFlatComboBox:OnMouseMove(UINT nFlags, CPoint point)SetTimer(1,10,NULL); CComboBox:OnMouseMove(nFlags, point);v
9、oid CFlatComboBox:OnLButtonDown(UINT nFlags, CPoint point)m_bLBtnDown = true;CComboBox:OnLButtonDown(nFlags, point);void CFlatComboBox:OnLButtonUp(UINT nFlags, CPoint point)m_bLBtnDown = false;Invalidate();CComboBox:OnLButtonUp(nFlags, point);void CFlatComboBox:OnTimer(UINT nIDEvent) POINT pt;GetCur
10、sorPos(CRect rcItem;GetWindowRect(static bool bPainted = false;/ OnLButtonDown, show pressed.if (m_bLBtnDown=true) KillTimer (1);if (bPainted = true) DrawCombo(FC_DRAWPRESSD, :GetSysColor(COLOR_BTNSHADOW),:GetSysColor(COLOR_BTNHIGHLIGHT);bPainted = false;return;/ If mouse leaves, show flat.if (!rcIt
11、em.PtInRect(pt) KillTimer (1);if (bPainted = true) DrawCombo(FC_DRAWNORMAL, :GetSysColor(COLOR_BTNFACE), :GetSysColor(COLOR_BTNFACE);bPainted = false;return;/ On mouse over, show raised.else if (bPainted = true)return;else bPainted = true;DrawCombo(FC_DRAWRAISED, :GetSysColor(COLOR_BTNSHADOW), :GetS
12、ysColor(COLOR_BTNHIGHLIGHT);CComboBox:OnTimer(nIDEvent);void CFlatComboBox:OnPaint()Default();DrawCombo(FC_DRAWNORMAL, :GetSysColor(COLOR_BTNFACE),:GetSysColor(COLOR_BTNFACE);void CFlatComboBox:DrawCombo(DWORD dwStyle, COLORREF clrTopLeft,COLORREF clrBottomRight)CRect rcItem;GetClientRect(CDC* pDC =
13、 GetDC();/ Cover up dark 3D shadow.pDC-Draw3dRect(rcItem, clrTopLeft, clrBottomRight);rcItem.DeflateRect(1,1);if (!IsWindowEnabled() pDC-Draw3dRect(rcItem, :GetSysColor(COLOR_BTNHIGHLIGHT), :GetSysColor(COLOR_BTNHIGHLIGHT);else pDC-Draw3dRect(rcItem, :GetSysColor(COLOR_BTNFACE),:GetSysColor(COLOR_BT
14、NFACE); / Cover up dark 3D shadow on drop arrow.rcItem.DeflateRect(1,1);rcItem.left = rcItem.right-Offset();pDC-Draw3dRect(rcItem, :GetSysColor(COLOR_BTNFACE),:GetSysColor(COLOR_BTNFACE);/ Cover up normal 3D shadow on drop arrow.rcItem.DeflateRect(1,1);pDC-Draw3dRect(rcItem, :GetSysColor(COLOR_BTNFACE),:GetSysColor(COLOR_BTNFACE);if (!IsWindowEnabled() return;switch (dwStyle)case FC_DRAWNORMAL: rcItem.top -= 1;rcItem.bottom += 1;pDC-Draw3dRect(rcItem, :GetSysColor(COLOR_BTNHIGHLIGHT),:GetSysC
