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怎样在非客户区捕捉鼠标状态?

王朝vc·作者佚名  2006-01-08
窄屏简体版  字體: |||超大  

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

作者信箱:

zhucde@163.com

 
 
 
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