分类: C/C++
2008-08-07 17:42:26
一、简介
有时我们需要在非客户区(例如:标题栏)添加按钮,并对按钮作出响应,如下图所示:
为此我封装了两个类CNCButton和CNCButtonManager,CNCButton主要用于按钮绘制,CNCButtonManager用于按钮的管理并对非客户区的消息进行处理。如下是几个主要的非客户区消息:
WM_NCHITTEST
WM_NCACTIVATE
WM_NCPAINT
二、使用
2.1 首先我们需要引用两个类的头文件
#include "NCButtonManager.h" #include "NCButton.h"2.2 为按钮定义ID
#define ID_BUTTON1 100 #define ID_BUTTON2 101 #define ID_BUTTON3 1022.3 添加按钮和管理类成员变量
// Implementation public: CNCButton m_NcButton1; CNCButton m_NcButton2; CNCButton m_NcButton3; CNCButtonManager m_NcButtonManager;2.4 创建按钮
// 按钮的位置和尺寸 POINT ptBtn1Offset = {120, 10}; POINT ptBtn2Offset = {20, 32}; POINT ptBtn3Offset = {190, 10}; SIZE sizeBtn1 = {60, 14}; SIZE sizeBtn2 = {16, 14}; SIZE sizeBtn3 = {16, 14}; // 创建按钮 m_NcButton1.Create("", this->m_hWnd, ptBtn1Offset, sizeBtn1, ID_BUTTON1); m_NcButton2.Create("", this->m_hWnd, ptBtn2Offset, sizeBtn2, ID_BUTTON2); m_NcButton3.Create("", this->m_hWnd, ptBtn3Offset, sizeBtn3, ID_BUTTON3); // 设置文字、提示、按钮位图 m_NcButton1.SetText("VC知识库", "宋体", 12); m_NcButton1.SetTooltip("VC知识库欢迎您!"); m_NcButton2.SetButtonBitmap(IDB_PEN1, BTNBMP_NORMAL); // 正常位图 m_NcButton2.SetButtonBitmap(IDB_PEN2, BTNBMP_MOUSEOVER); // 鼠标移到上面时的位图 m_NcButton2.SetTooltip("pen"); m_NcButton3.SetButtonBitmap(IDB_PEN1, BTNBMP_NORMAL); m_NcButton3.SetButtonBitmap(IDB_PEN2, BTNBMP_MOUSEOVER); m_NcButton3.SetTooltip("pen"); // 添加到管理类 m_NcButtonManager.AddButton(&m_NcButton1); m_NcButtonManager.AddButton(&m_NcButton2); m_NcButtonManager.AddButton(&m_NcButton3);2.5 消息的处理
LRESULT CMainFrame::DefWindowProc(UINT message, WPARAM wParam, LPARAM lParam) { LRESULT lResult = CFrameWnd::DefWindowProc(message, wParam, lParam); if(!IsWindow(this->m_hWnd)) return lResult; LRESULT lMyResult = m_NcButtonManager.DefWindowProc(this->m_hWnd, message, wParam, lParam); if(lMyResult != 0) return lMyResult; else return lResult; }2.5.2 添加消息处理函数
// Operations public: void OnNcButton1Clicked(); void CMainFrame::OnNcButton1Clicked() { AfxMessageBox("VC知识库欢迎您! "); }2.5.3 消息映射
BEGIN_MESSAGE_MAP(CMainFrame, CFrameWnd) //{{AFX_MSG_MAP(CMainFrame) ON_BN_CLICKED(ID_BUTTON1, OnNcButton1Clicked) ON_BN_CLICKED(ID_BUTTON2, OnNcButton2Clicked) ON_BN_CLICKED(ID_BUTTON3, OnNcButton3Clicked) ON_WM_CREATE() //}}AFX_MSG_MAP END_MESSAGE_MAP()总结:本文提供的两个类可以方便地往非客户区(如:标题栏)添加按钮,欢迎批评指正! 下载本文示例代码