C++动态链接控件

//LinkLable.h
//作者:boitboy
//个人博客:http://www.cadgj.com
//功能:动态链接控件
//最后修改时间:2012/7/7
#pragma once
#include “afxwin.h”
typedef bool (*OnClickHandle)();
class CLinkLable :
public CStatic
{
DECLARE_DYNAMIC(CLinkLable)
public:
CLinkLable(void);
~CLinkLable(void);
public:
void SetCursor(HCURSOR hCursor);//设置光标
HCURSOR GetCursor() const; //获取光标

void SetUnderline(BOOL bUnderline = TRUE);//设置是否使用下划线
BOOL GetUnderline() const; //获取是否使用下划线

void SetAutoSize(BOOL bAutoSize = TRUE); //设置是否根据调整控件大小以适应文字
BOOL GetAutoSize() const;//获取是否根据调整控件大小以适应文字

void SetColour(COLORREF crColour);//设置控件普通情况下的颜色
COLORREF GetColour() const;//获取控件普通情况下的颜色

void SetClickColor(COLORREF crClickedColour);//设置控件被点击过后的颜色
COLORREF GetClickedColour() const;//获取控件被点击过后的颜色

void SetHoverColour(COLORREF crHoverColour);//设置鼠标晃过控件时的颜色
COLORREF GetHoverColour() const;//获取鼠标晃过控件时的颜色

void SetTip(CString Tip);//设置提示文字
CString GetTip() const;////获取提示文字

void SetOnClickHandle(OnClickHandle m_Handle);
public:
virtual BOOL PreTranslateMessage(MSG* pMsg);
protected:
//方法
virtual void PreSubclassWindow();
void PositionWindow();
void SetDefaultCursor();
void SetClicked(BOOL bClicked=TRUE);
protected:
//变量
CFont m_Font;//字体
BOOL m_bUnderline;//下划线
BOOL m_bAdjustToFit;//调整至适应文字大小
HCURSOR m_hCursor;//光标
BOOL m_bOverControl;//鼠标晃过控件
COLORREF m_crColour;//控件普通状态下的颜色
COLORREF m_crClickedColour;//按过一次后控件的颜色
COLORREF m_crHoverColour;//鼠标晃过控件的时候控件的颜色
BOOL m_bClicked;//是否被点击过了
CToolTipCtrl m_ToolTip;//ToolTip控件
CString m_strTip;//提示
OnClickHandle m_OnClickHandle;//被按下执行函数
protected:
//消息处理
afx_msg void OnMouseMove(UINT nFlags, CPoint point);
afx_msg BOOL OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message);
afx_msg HBRUSH CtlColor(CDC* pDC, UINT nCtlColor);
afx_msg virtual void OnClicked();
DECLARE_MESSAGE_MAP()
};
class CHyperLinkLable:
public CLinkLable
{
public:
CHyperLinkLable();
~CHyperLinkLable();
public:
void SetURL(CString strURL);
CString GetURL() const;
protected:
CString m_strURL;//网页地址
BOOL m_bVisited;
virtual void OnClicked();
void SetVisited(BOOL bVisited=TRUE);
private:
CLinkLable::SetTip;//方法在此类里被禁用
CLinkLable::GetTip;//方法在此类里被禁用
CLinkLable::SetOnClickHandle;//方法在此类里被禁用

};
//LinkLable.cpp
//作者:boitboy
//个人博客:http://www.cadgj.com
//功能:动态链接控件
//最后修改时间:2012/7/7
#include “StdAfx.h”
#include “LinkLable.h”
#define TOOLTIP_ID 1
IMPLEMENT_DYNAMIC (CLinkLable, CStatic)
CLinkLable::CLinkLable(void)
{
m_hCursor = NULL;//光标为空值
m_crColour = RGB( 0, 0, 238); // Blue
m_crClickedColour = RGB( 0, 0, 238); // Purple
m_crHoverColour = RGB( 0, 0, 238);
m_bOverControl = FALSE; // Cursor not yet over control
m_bClicked = FALSE; // Hasn’t been visited yet.
m_bUnderline = TRUE; // Underline the link?
m_bAdjustToFit = TRUE; // Resize the window to fit the text?
m_strTip=_T(“”);
m_OnClickHandle=NULL;
}

CLinkLable::~CLinkLable(void)
{
try
{
m_Font.DeleteObject();
}
catch(…)
{

}
}
BEGIN_MESSAGE_MAP(CLinkLable, CStatic)
//{{AFX_MSG_MAP(CLinkLable)
ON_CONTROL_REFLECT(STN_CLICKED, OnClicked)
ON_WM_MOUSEMOVE()
ON_WM_SETCURSOR()
ON_WM_CTLCOLOR_REFLECT()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
void CLinkLable::PreSubclassWindow()
{
// We want to get mouse clicks via STN_CLICKED
DWORD dwStyle = GetStyle();
::SetWindowLong(GetSafeHwnd(), GWL_STYLE, dwStyle | SS_NOTIFY);

// Create the font
LOGFONT lf;
if(GetFont()!=NULL)
{
GetFont()->GetLogFont(&lf);
}
lf.lfUnderline = m_bUnderline;
m_Font.CreateFontIndirect(&lf);
SetFont(&m_Font);

PositionWindow(); // Adjust size of window to fit URL if necessary
SetDefaultCursor(); // Try and load up a “hand” cursor
CRect rect;
GetClientRect(rect);
m_ToolTip.Create(this);
m_ToolTip.AddTool(this, m_strTip, rect, TOOLTIP_ID);

CStatic::PreSubclassWindow();
}
BOOL CLinkLable::PreTranslateMessage(MSG* pMsg)
{
m_ToolTip.RelayEvent(pMsg);
return CStatic::PreTranslateMessage(pMsg);
}
void CLinkLable::PositionWindow()
{
if (!::IsWindow(GetSafeHwnd()) || !m_bAdjustToFit)
return;

// Get the current window position
CRect rect;
GetWindowRect(rect);

CWnd* pParent = GetParent();
if (pParent)
pParent->ScreenToClient(rect);

// Get the size of the window text
CString strWndText;
GetWindowText(strWndText);

CDC* pDC = GetDC();
CFont* pOldFont = pDC->SelectObject(&m_Font);
CSize Extent = pDC->GetTextExtent(strWndText);
pDC->SelectObject(pOldFont);
ReleaseDC(pDC);

// Get the text justification via the window style
DWORD dwStyle = GetStyle();

// Recalc the window size and position based on the text justification
if (dwStyle & SS_CENTERIMAGE)
rect.DeflateRect(0, (rect.Height() – Extent.cy)/2);
else
rect.bottom = rect.top + Extent.cy;

if (dwStyle & SS_CENTER)
rect.DeflateRect((rect.Width() – Extent.cx)/2, 0);
else if (dwStyle & SS_RIGHT)
rect.left = rect.right – Extent.cx;
else // SS_LEFT = 0, so we can’t test for it explicitly
rect.right = rect.left + Extent.cx;

// Move the window
SetWindowPos(NULL, rect.left, rect.top, rect.Width(), rect.Height(), SWP_NOZORDER);
}
void CLinkLable::SetDefaultCursor()
{
if (m_hCursor == NULL)
{
// 获取windows路径
CString strWndDir;
GetWindowsDirectory(strWndDir.GetBuffer(MAX_PATH), MAX_PATH);
strWndDir.ReleaseBuffer();

strWndDir += _T(“\\winhlp32.exe”);
// 从winhlp32.exe获取一个手型的光标
HMODULE hModule = LoadLibrary(strWndDir);
if (hModule) {
HCURSOR hHandCursor = ::LoadCursor(hModule, MAKEINTRESOURCE(106));
if (hHandCursor)
m_hCursor = CopyCursor(hHandCursor);
}
FreeLibrary(hModule);
}
}
void CLinkLable::OnMouseMove(UINT nFlags, CPoint point)
{
CStatic::OnMouseMove(nFlags, point);

if (m_bOverControl) // Cursor is currently over control
{
CRect rect;
GetClientRect(rect);

if (!rect.PtInRect(point))
{
m_bOverControl = FALSE;
ReleaseCapture();
RedrawWindow();
return;
}
}
else // Cursor has just moved over control
{
CRect rect;
GetClientRect(rect);
if (rect.PtInRect(point))
{
m_bOverControl = TRUE;
RedrawWindow();
SetCapture();
}
}
}
BOOL CLinkLable::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message)
{
if (m_hCursor)
{
::SetCursor(m_hCursor);
return TRUE;
}
return FALSE;
}
HBRUSH CLinkLable::CtlColor(CDC* pDC, UINT nCtlColor)
{
ASSERT(nCtlColor == CTLCOLOR_STATIC);

if (m_bOverControl)
pDC->SetTextColor(m_crHoverColour);
else if (m_bClicked)
pDC->SetTextColor(m_crClickedColour);
else
pDC->SetTextColor(m_crColour);

// transparent text.
pDC->SetBkMode(TRANSPARENT);
return (HBRUSH)GetStockObject(NULL_BRUSH);
}
void CLinkLable::OnClicked()
{
if(m_OnClickHandle!=NULL)
{
try
{
if(!m_OnClickHandle())
{
return;
}
}
catch(…)
{
return;
}

}
SetClicked();
}
void CLinkLable::SetClicked(BOOL bClicked)
{
m_bClicked = bClicked;

if (::IsWindow(GetSafeHwnd()))
Invalidate();
}
void CLinkLable::SetCursor(HCURSOR hCursor)
{
m_hCursor = hCursor;
if (m_hCursor == NULL)
SetDefaultCursor();
}

HCURSOR CLinkLable::GetCursor() const
{
return m_hCursor;
}

void CLinkLable::SetUnderline(BOOL bUnderline /* = TRUE */)
{
m_bUnderline = bUnderline;

if (::IsWindow(GetSafeHwnd()))
{
LOGFONT lf;
GetFont()->GetLogFont(&lf);
lf.lfUnderline = m_bUnderline;

m_Font.DeleteObject();
m_Font.CreateFontIndirect(&lf);
SetFont(&m_Font);

Invalidate();
}
}

BOOL CLinkLable::GetUnderline() const
{
return m_bUnderline;
}

void CLinkLable::SetAutoSize(BOOL bAutoSize /* = TRUE */)
{
m_bAdjustToFit = bAutoSize;

if (::IsWindow(GetSafeHwnd()))
PositionWindow();
}

BOOL CLinkLable::GetAutoSize() const
{
return m_bAdjustToFit;
}

void CLinkLable::SetColour(COLORREF crColour)
{
if(crColour==m_crColour)
return;
m_crColour=crColour;
if (m_bOverControl||m_bClicked)
return;
//刷新界面显示
if (::IsWindow(m_hWnd))
Invalidate();
}

COLORREF CLinkLable::GetColour() const
{
return m_crColour;
}
void CLinkLable::SetClickColor(COLORREF crClickedColour)
{
if(m_crClickedColour==crClickedColour)
return;
if (m_bOverControl)
return;
if(!m_bClicked)
return;
m_crClickedColour=crClickedColour;
//刷新界面显示
if (::IsWindow(m_hWnd))
Invalidate();
}
COLORREF CLinkLable::GetClickedColour() const
{
return m_crClickedColour;
}
void CLinkLable::SetHoverColour(COLORREF crHoverColour)
{
if(m_crHoverColour==crHoverColour)
{
return;
}
if(!m_bOverControl)
return;
m_crHoverColour=crHoverColour;
//刷新界面显示
if (::IsWindow(m_hWnd))
Invalidate();
}
COLORREF CLinkLable::GetHoverColour() const
{
return m_crHoverColour;
}
void CLinkLable::SetTip(CString Tip)
{
if(m_strTip.Compare(Tip)==0)
return;
m_strTip=Tip;
if (::IsWindow(GetSafeHwnd())) {
PositionWindow();
m_ToolTip.UpdateTipText(m_strTip, this, TOOLTIP_ID);
}

}
CString CLinkLable::GetTip() const
{
return m_strTip;
}
void CLinkLable::SetOnClickHandle(OnClickHandle m_Handle)
{
m_OnClickHandle=m_Handle;
}
//////////////////////////////////////////////分隔符:CHyperLinkLable///////////////////////////////////////////////////
LONG GetRegKey(HKEY key, LPCTSTR subkey, LPTSTR retdata)
{
HKEY hkey;
LONG retval = RegOpenKeyEx(key, subkey, 0, KEY_QUERY_VALUE, &hkey);

if (retval == ERROR_SUCCESS) {
long datasize = MAX_PATH;
TCHAR data[MAX_PATH];
RegQueryValue(hkey, NULL, data, &datasize);
lstrcpy(retdata,data);
RegCloseKey(hkey);
}

return retval;
}
HINSTANCE GotoURL(LPCTSTR url, int showcmd)
{
TCHAR key[MAX_PATH + MAX_PATH];

// First try ShellExecute()
HINSTANCE result = ShellExecute(NULL, _T(“open”), url, NULL,NULL, showcmd);

// If it failed, get the .htm regkey and lookup the program
if ((UINT)result == HINSTANCE_ERROR) {

if (GetRegKey(HKEY_CLASSES_ROOT, _T(“.htm”), key) == ERROR_SUCCESS) {
lstrcat(key, _T(“\\shell\\open\\command”));

if (GetRegKey(HKEY_CLASSES_ROOT,key,key) == ERROR_SUCCESS) {
TCHAR *pos;
pos = _tcsstr(key, _T(“\”%1\””));
if (pos == NULL) { // No quotes found
#ifdef _UNICODE
pos = wcsstr(key, _T(“%1”)); // Check for %1, without quotes
#else
pos = strstr(key, _T(“%1″)); // Check for %1, without quotes
#endif

if (pos == NULL) // No parameter at all…
pos = key+lstrlen(key)-1;
else
*pos = ‘\0’; // Remove the parameter
}
else
*pos = ‘\0’; // Remove the parameter

lstrcat(pos, _T(” “));
lstrcat(pos, url);
result = (HINSTANCE) WinExec((LPCSTR)key,showcmd);
}
}
}

return result;
}
CHyperLinkLable::CHyperLinkLable()
:CLinkLable()
{
m_crColour = RGB( 0, 0, 238); // Blue
m_crClickedColour = RGB( 85, 26, 139); // Purple
m_crHoverColour = ::GetSysColor(COLOR_HIGHLIGHT);
}
CHyperLinkLable::~CHyperLinkLable()
{

}
void CHyperLinkLable::SetURL(CString strURL)
{
m_strURL=strURL;
SetTip(m_strURL);

}
CString CHyperLinkLable::GetURL() const
{
return m_strURL;
}
void CHyperLinkLable::OnClicked()
{
int result = (int)GotoURL(m_strURL, SW_SHOW);
m_bVisited = (result > HINSTANCE_ERROR);
if(!m_bVisited)
return;
SetVisited();
}
void CHyperLinkLable::SetVisited(BOOL bVisited)
{
m_bVisited = bVisited;
SetClicked(bVisited);
if (::IsWindow(GetSafeHwnd()))
Invalidate();
}

使用：
在页面放置一个静态文本
在对话框的
DoDataExchange (CDataExchange *pDX)
增加
DDX_Control(pDX,IDC_STATIC_XX,m_LinkXX);
即可使用