怎样在非客户区捕捉鼠标状态?
鉴于很多网友苦于在非客户区捕捉鼠标状态,特写出用DirectX来解决的方法.
首先新建一个基于对话框的工程(定为MouseR)
在工程属性的Link-->Object/Library Modules:里加上:
dxguid.lib dxerr8.lib dinput8.lib
(如果你的机器上安装了DirectX 8.0 SDK,只需要如上操作就行了,
如果没有安装或没有将VC的库指定到SDK里,你需要将这几个库拷贝到你的工程中)
同时,在MouseRDlg.cpp的头部加上:#include <dinput.h>//安装了SDK情况下.
以下为原文件:
///////////////////////////////////////////////////////////////////////////// // CMouseRDlg dialog
class CMouseRDlg : public CDialog { // Construction public: CMouseRDlg(CWnd* pParent = NULL); // standard constructor
//此处定义三个函数
VOID FreeDirectInput(); //释放 void ReadImmediateData(); //读取 void InitDevice(); //初始化
// Dialog Data //{{AFX_DATA(CMouseRDlg) enum { IDD = IDD_MOUSER_DIALOG }; // NOTE: the ClassWizard will add data members here //}}AFX_DATA
// ClassWizard generated virtual function overrides //{{AFX_VIRTUAL(CMouseRDlg) protected: virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support //}}AFX_VIRTUAL
// Implementation protected: HICON m_hIcon;
// Generated message map functions //{{AFX_MSG(CMouseRDlg) virtual BOOL OnInitDialog(); afx_msg void OnSysCommand(UINT nID, LPARAM lParam); afx_msg void OnPaint(); afx_msg HCURSOR OnQueryDragIcon(); afx_msg void OnTimer(UINT nIDEvent); afx_msg void OnDestroy(); //}}AFX_MSG DECLARE_MESSAGE_MAP() };
//{{AFX_INSERT_LOCATION}} // Microsoft Visual C++ will insert additional declarations immediately before the previous line.
#endif // !defined(AFX_MOUSERDLG_H__BC9AFF7C_C2BE_439A_9D50_CDC608606DFA__INCLUDED_)
// MouseRDlg.cpp : implementation file //
#include "stdafx.h" #include "MouseR.h" #include "MouseRDlg.h"
//dirctx #include <dinput.h>
#ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif
///////////////////////////////////////////////////////////////////////////// // CAboutDlg dialog used for App About
//定义两个小函数 #define SAFE_DELETE(p) { if(p) { delete (p); (p)=NULL; } } #define SAFE_RELEASE(p) { if(p) { (p)->Release(); (p)=NULL; } }
//#define SAMPLE_BUFFER_SIZE 16 // arbitrary number of buffer elements
LPDIRECTINPUT8 g_pDI = NULL; //定义两个控制变量 LPDIRECTINPUTDEVICE8 g_pMouse = NULL;
class CAboutDlg : public CDialog { public: CAboutDlg();
// Dialog Data //{{AFX_DATA(CAboutDlg) enum { IDD = IDD_ABOUTBOX }; //}}AFX_DATA
// ClassWizard generated virtual function overrides //{{AFX_VIRTUAL(CAboutDlg) protected: virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support //}}AFX_VIRTUAL
// Implementation protected: //{{AFX_MSG(CAboutDlg) //}}AFX_MSG DECLARE_MESSAGE_MAP() };
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) { //{{AFX_DATA_INIT(CAboutDlg) //}}AFX_DATA_INIT }
void CAboutDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CAboutDlg) //}}AFX_DATA_MAP }
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) //{{AFX_MSG_MAP(CAboutDlg) // No message handlers //}}AFX_MSG_MAP END_MESSAGE_MAP()
///////////////////////////////////////////////////////////////////////////// // CMouseRDlg dialog
CMouseRDlg::CMouseRDlg(CWnd* pParent /*=NULL*/) : CDialog(CMouseRDlg::IDD, pParent) { //{{AFX_DATA_INIT(CMouseRDlg) // NOTE: the ClassWizard will add member initialization here //}}AFX_DATA_INIT m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); }
void CMouseRDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CMouseRDlg) // NOTE: the ClassWizard will add DDX and DDV calls here //}}AFX_DATA_MAP }
BEGIN_MESSAGE_MAP(CMouseRDlg, CDialog) //{{AFX_MSG_MAP(CMouseRDlg) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_WM_TIMER() ON_WM_DESTROY() //}}AFX_MSG_MAP END_MESSAGE_MAP()
///////////////////////////////////////////////////////////////////////////// // CMouseRDlg message handlers
BOOL CMouseRDlg::OnInitDialog() { CDialog::OnInitDialog();
// Add "About..." menu item to system menu.
// IDM_ABOUTBOX must be in the system command range. ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); ASSERT(IDM_ABOUTBOX < 0xF000);
CMenu* pSysMenu = GetSystemMenu(FALSE); if (pSysMenu != NULL) { CString strAboutMenu; strAboutMenu.LoadString(IDS_ABOUTBOX); if (!strAboutMenu.IsEmpty()) { pSysMenu->AppendMenu(MF_SEPARATOR); pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); } }
SetIcon(m_hIcon, TRUE); // Set big icon SetIcon(m_hIcon, FALSE); // Set small icon // TODO: Add extra initialization here
InitDevice(); SetTimer(1,10,0); return TRUE; // return TRUE unless you set the focus to a control }
void CMouseRDlg::OnSysCommand(UINT nID, LPARAM lParam) { if ((nID & 0xFFF0) == IDM_ABOUTBOX) { CAboutDlg dlgAbout; dlgAbout.DoModal(); } else { CDialog::OnSysCommand(nID, lParam); } }
// If you add a minimize button to your dialog, you will need the code below // to draw the icon. For MFC applications using the document/view model, // this is automatically done for you by the framework.
void CMouseRDlg::OnPaint() { if (IsIconic()) { CPaintDC dc(this); // device context for painting
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
// Center icon in client rectangle int cxIcon = GetSystemMetrics(SM_CXICON); int cyIcon = GetSystemMetrics(SM_CYICON); CRect rect; GetClientRect(&rect); int x = (rect.Width() - cxIcon + 1) / 2; int y = (rect.Height() - cyIcon + 1) / 2;
// Draw the icon dc.DrawIcon(x, y, m_hIcon); } else { CDialog::OnPaint(); } }
HCURSOR CMouseRDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; }
void CMouseRDlg::InitDevice() { HRESULT hr; FreeDirectInput();
if( FAILED( hr = DirectInput8Create( GetModuleHandle(NULL), DIRECTINPUT_VERSION, IID_IDirectInput8, (VOID**)&g_pDI, NULL ) ) ) return ; // Obtain an interface to the system mouse device. if( FAILED( hr = g_pDI->CreateDevice( GUID_SysMouse, &g_pMouse, NULL ) ) ) return ; if( FAILED( hr = g_pMouse->SetDataFormat( &c_dfDIMouse2 ) ) ) return ; if( FAILED(hr) ) return ; g_pMouse->Acquire();
}
///////////////////read mouse info//////// void CMouseRDlg::ReadImmediateData( ) { HRESULT hr; CString strNewText; DIMOUSESTATE2 dims2; // DirectInput mouse state structure
CPoint point;
if( NULL == g_pMouse ) return ; ZeroMemory( &dims2, sizeof(dims2) ); hr = g_pMouse->GetDeviceState( sizeof(DIMOUSESTATE2), &dims2 ); if( FAILED(hr) ) { hr = g_pMouse->Acquire(); while( hr == DIERR_INPUTLOST ) hr = g_pMouse->Acquire();
if( hr == DIERR_OTHERAPPHASPRIO || hr == DIERR_NOTACQUIRED ) SetDlgItemText(IDC_STATIC1, "失败!" );
} GetCursorPos(&point); //得到鼠标位置.这个功能直接用API得到更方便,所以这里取
// 代了DirectX strNewText.Format("L=%d R=%d M=%d X=%4d Y=%4d", //写入结果,分别为L左
//键,R右键,M中键,X鼠标X
//值,Y鼠标Y值.前三个值,1
//表示按下,0为弹起 (dims2.rgbButtons[0] & 0x80) ? 1 : 0, (dims2.rgbButtons[1] & 0x80) ? 1 : 0, (dims2.rgbButtons[2] & 0x80) ? 1 : 0, point.x,point.y );
CString strOldText; GetDlgItemText(IDC_STATIC1, strOldText); if( 0 != lstrcmp( strOldText, strNewText ) ) SetDlgItemText( IDC_STATIC1, strNewText ); //显示结果,IDC_STATIC1为用来
//显示的文本标签 }
VOID CMouseRDlg::FreeDirectInput() //释放 { if( g_pMouse ) g_pMouse->Unacquire();
SAFE_RELEASE( g_pMouse ); SAFE_RELEASE( g_pDI ); }
void CMouseRDlg::OnTimer(UINT nIDEvent) {
ReadImmediateData( ); CDialog::OnTimer(nIDEvent); }
void CMouseRDlg::OnDestroy() {
FreeDirectInput(); KillTimer(1); CDialog::OnDestroy(); }
OK了,运行一下程序就可以了,这时你会发再点击屏幕任意一个地方都会有响应了.
下载工程代码:
http://www.7forever.com/rwdata/temp/MouseR.rar

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