上位机MFC实现带链接效果的文本

qq263946146 · 2019-7-9 10:11:23

实现效果：

当前实例通过对CStatic类的扩展，实现文本框带链接，可以设置背景文本颜色等属性。这些属性是通过下面代码实现
COLORREF bk = RGB(192, 192 ,192);
COLORREF tx = RGB( 0, 96, 142);
m_Static.bkColor( bk );
m_Static.textColor( tx );
m_Static.doCustomCursor();// Show a custom cursor
m_Static.onClickDoShellCommand("www.gkbc8.com");

效果如下图：

上位机MFC实现带链接效果的文本

实现过程
1.新建一对话框工程，添加静态文本控制，如上图，将例程根目录三文件STATICEX.CPP，STATICEX.H,LOGFONT.H复制使用，
或复制帖子尾部的代码，再导入文件到工程。

2.准备好后，可以发再自己工程多出几个集成类，如CStaticEx。
然后是这个类的使用，在主对话框中包含类头文件，添加其实例
#include "StaticEx.h"
CStaticEx m_Static;
最后是添加实例的初始化代码
COLORREF bk = RGB(192, 192 ,192);
COLORREF tx = RGB(  0,  96, 142);
m_Static.bkColor( bk );
m_Static.textColor( tx );
m_Static.doCustomCursor();// Show a custom cursor
m_Static.onClickDoShellCommand("www.gkbc8.com");// Have the ctrl respond to button clicks

这样就可以编译了，编译时提示缺少一个鼠标图像资源IDC_CURSOR_HAND，可以自己添加，或复制使用。

例程中还设置了对话框背景与静态文本控件背景保持一致
主要是准备了一画刷CBrush m_bkBrush;m_bkBrush.CreateSolidBrush(bk); 来填充对话框背景
HBRUSH CCTestDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

if(nCtlColor==CTLCOLOR_DLG)
return m_bkBrush;

return hbr;
}

下面是文件源代码，可以复制使用或直接下载例程：

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// Description:
//
// Extended CStatic class. Allows easy customization of the following:
//
// 1. COLORREF CStaticEx::bkColor( COLORREF crColor )
// - Sets back ground color of the control
//
// 2. COLORREF CStaticEx::textColor( COLORREF crColor )
// - Sets text or foreground color of the control
//
// 3. COLORREF bkColor() const
// - Returns back ground color of control
//
// 4. COLORREF textColor() const
// - Returns text (or foreground) color of control
//
// 5. void onClickDoShellCommand( const CString& linkName )
//
// (Note: the idea for this part of the control
// came fom Paul DiLascia in the December issue
// of MSJ )
//
// - Use control as a link to open a link (this may
// be an exe if you like...
//
// COLORREF setLinkColorVisited( COLORREF crColor )
// - Sets the visit color, returns previous setting
//
// COLORREF setLinkColorUnvisited( COLORREF crColor )
// - Sets the unvisited color, returns previous setting
//
//
//
#if !defined(AFX_STATICEX_H__CC617FC0_4FE2_11D1_9E2E_40E806C10000__INCLUDED_)
#define AFX_STATICEX_H__CC617FC0_4FE2_11D1_9E2E_40E806C10000__INCLUDED_
#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000
typedef void (*CWND_INIT_FUNCTION)();
/////////////////////////////////////////////////////////////////////////////
// CStaticEx window
class CStaticEx : public CStatic
{
// Construction
public:
CStaticEx();
// Copy Semantics
// Block copy construction...
//
// No m_hWnd defined for object.
//
private:
CStaticEx( const CStaticEx& );
public:
// Allow basics to be copied...
CStaticEx& operator = ( const CStaticEx& );
public:
DECLARE_DYNCREATE( CStaticEx )
// Attributes
// Turn off and on showing off the default cursor
//
void doCustomCursor( bool custom = true )
{
m_doCustomCursor = custom;
}
// Font control
//
void setFont( const LOGFONT* lpLogFont );
void setFont( LONG fontHeight = -8,
LONG fontWeight = FW_NORMAL,
UCHAR pitchAndFamily = DEFAULT_PITCH | FF_DONTCARE,
LPCSTR faceName = _T("MS Sans Serif" ) );
void onClickDoShellCommand( const CString& linkAddress = "mailto:bberry@javanet.com" );
// This method will send a windows message if onClickSendMessage() has
// defined a message to send
//
void onClickShowModalDialog( CDialog* dlg = 0 )
{ m_dialog = dlg;
}
// On a windows click event show this window object
//
void onClickShowWindow( CWnd* cwnd = 0 )
{
ASSERT( cwnd && ::IsWindow(cwnd->m_hWnd) );
m_showThisCwnd = cwnd;
}
// Send a windows message when a OnClick event occurs
//
void onClickSendMessage( CWnd* cwnd = 0, UINT wm_message = 0, WPARAM flags = 0 )
{
ASSERT( cwnd&& ::IsWindow(cwnd->m_hWnd) );
m_sendMsgToThisCwnd = cwnd;
m_msg_flags = flags;
m_wm_message = wm_message;
}
// Turn click events on or off
//
void doOnClickEvents( bool doEvents = true )
{
DWORD dwStyle = GetStyle();
if ( doEvents )
{
if ( !(dwStyle & SS_NOTIFY) )
::SetWindowLong( m_hWnd, GWL_STYLE, dwStyle | SS_NOTIFY );
}
else
{
if ( (dwStyle & SS_NOTIFY) ) {
dwStyle ^= SS_NOTIFY;
::SetWindowLong( m_hWnd, GWL_STYLE, dwStyle );
}
}
}
// Control coloring of the static object
//
COLORREF bkColor ( COLORREF );
COLORREF bkColor() const { return m_crBkColor; }
COLORREF textColor( COLORREF );
COLORREF textColor() const { return m_crTextColor; }
// Set up shell link colors
//
COLORREF setLinkColorVisited( COLORREF );
COLORREF setLinkColorUnvisited( COLORREF );
// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CStaticEx)
//}}AFX_VIRTUAL
// Implementation
virtual ~CStaticEx();
// Generated message map functions
protected:
//{{AFX_MSG(CStaticEx)
//}}AFX_MSG
afx_msg void OnClicked();
afx_msg HBRUSH CtlColor(CDC* pDC, UINT nCtlColor);
afx_msg BOOL OnSetCursor( CWnd* pWnd, UINT nHitTest, UINT message );
DECLARE_MESSAGE_MAP()
// Customize your brush
//
virtual BOOL CreateBrushType();
private:
CWnd* m_showThisCwnd; // a window to show when a click event
// occurs
CWnd* m_sendMsgToThisCwnd; // the window to send messages to when
// a click event occurs
UINT m_wm_message; // the windows message event
// initialize the m_showThisCwnd object
WPARAM m_msg_flags; // data to send on click events
CDialog* m_dialog; // a dialog to show on show on a click event
bool m_doCustomCursor; // don't show the hand cursor
CBrush m_brBkGround; // the back ground brush
BOOL m_didClickEvent; // use to flag if a click event ever happened
CString m_shellCommandArg; // The actual link
COLORREF m_crBkColor;
COLORREF m_crTextColor;
COLORREF m_crOnClickColor;
//
// COLORREF m_crUnvisited = m_crTextColor;
//
CFont* m_pCFont;
};
/////////////////////////////////////////////////////////////////////////////
//{{AFX_INSERT_LOCATION}}
// Microsoft Developer Studio will insert additional declarations immediately before the previous line.
#endif // !defined(AFX_STATICEX_H__CC617FC0_4FE2_11D1_9E2E_40E806C10000__INCLUDED_)

复制代码

// Description:
//
// Extended CStatic class. Allows easy customization of the following:
//
// 1. COLORREF bkColor( COLORREF crColor )
// - Sets back ground color of the control
//
// 2. COLORREF textColor( COLORREF crColor )
// - Sets text or foreground color of the control
//
// 3. COLORREF bkColor() const
// - Returns back ground color of control
//
// 4. COLORREF textColor() const
// - Returns text (or foreground) color of control
//
// 5. void setFont( const LOGFONT* lpLogFont )
// - Sets the font of the static control.
//
// 6. void onClickDoShellCommand( const CString& linkName )
//
// (Note: the idea for this part of the control
// came fom Paul DiLascia in the December issue
// of MSJ )
//
// - Use control as a link to open a link (this may
// be an exe if you like...
//
// 7. COLORREF setLinkColorVisited( COLORREF crColor )
// - Sets the visit color, returns previous setting
//
// 8. COLORREF setLinkColorUnvisited( COLORREF crColor )
// - Sets the unvisited color, returns previous setting
//
// *** Set new font for this control ***
//
// 9. void setFont( const LOGFONT* lpLogFont );
//
// 10. void setFont( LONG fontHeight = -8,
// LONG fontWeight = FW_NORMAL,
// UCHAR pitchAndFamily = DEFAULT_PITCH | FF_DONTCARE,
// LPCSTR faceName = _T("MS Sans Serif"
// );
//
#include "stdafx.h"
#include "resource.h"
#include "LogFont.h"
#include "StaticEx.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CStaticEx
IMPLEMENT_DYNCREATE( CStaticEx, CStatic )
BEGIN_MESSAGE_MAP(CStaticEx, CStatic)
//{{AFX_MSG_MAP(CStaticEx)
//}}AFX_MSG_MAP
ON_WM_SETCURSOR()
ON_WM_CTLCOLOR_REFLECT()
ON_CONTROL_REFLECT( STN_CLICKED, OnClicked )
END_MESSAGE_MAP()
CStaticEx::CStaticEx()
{
// Use system colors for defaults
//
m_crTextColor = ::GetSysColor( COLOR_WINDOWTEXT );
m_crBkColor = ::GetSysColor( COLOR_3DFACE );
m_crOnClickColor = RGB( 0, 128, 192 );
// The default brush type; SOLID
//
CreateBrushType();
// Uses default font
//
m_pCFont = 0;
// Link was not visited
//
m_didClickEvent = FALSE;
// Set to popup a dialog when this control is clicked
//
m_dialog = 0;
// Show a new window when this control is clicked
//
m_showThisCwnd = 0;
m_sendMsgToThisCwnd = 0;
// defines a message that may be sent to m_showThisCwnd
//
m_msg_flags = 0;
m_wm_message = 0;
// Do use the hand cursor
//
m_doCustomCursor = false;
}
CStaticEx::~CStaticEx()
{
if ( m_pCFont ) delete m_pCFont;
}
// Note: Copy construction is blocked for this class.
// This is because there would be no defined
// m_hWnd during the construction of the object.
//
// CStaticEx::CStaticEx( const CStaticEx& o )
//
// Allow = operator to be used for copying basics.
//
CStaticEx& CStaticEx::operator = ( const CStaticEx& o )
{
_ASSERT( o != *this ); // You probably did not mean to do this...
if ( o == *this ) return *this; // copying self...
m_shellCommandArg = o.m_shellCommandArg;
m_crOnClickColor = o.m_crOnClickColor;
bkColor( o.m_crBkColor );
textColor( o.m_crTextColor );
if ( o.m_pCFont ) {
CLogFont pLogFont;
o.m_pCFont->GetLogFont( &pLogFont );
setFont( &pLogFont );
}
m_dialog = o.m_dialog;
m_showThisCwnd = o.m_showThisCwnd;
m_didClickEvent = o.m_didClickEvent;
m_sendMsgToThisCwnd = o.m_sendMsgToThisCwnd;
m_msg_flags = o.m_msg_flags;
m_wm_message = o.m_wm_message;
m_doCustomCursor = o.m_doCustomCursor;
return *this;
}
/////////////////////////////////////////////////////////////////////////////
// CStaticEx message handlers
void CStaticEx::setFont( const LOGFONT* lpLogFont )
{
_ASSERT( lpLogFont ); // logfont is not defined!!!
if ( !lpLogFont ) return;
if ( m_pCFont ) delete m_pCFont;
m_pCFont = new CFont;
m_pCFont->CreateFontIndirect( lpLogFont );
SetFont( m_pCFont );
}
void CStaticEx::setFont( LONG fontHeight /* = -8 */,
LONG fontWeight /* = FW_NORMAL */,
UCHAR pitchAndFamily /* = DEFAULT_PITCH | FF_DONTCARE*/,
LPCSTR faceName /* = _T("MS Sans Serif") */ )
{
if ( m_pCFont )
{
delete m_pCFont;
}
m_pCFont = new CFont;
const CLogFont lf( fontHeight,
FW_NORMAL,
pitchAndFamily,
faceName
);
m_pCFont->CreateFontIndirect( &lf );
SetFont( m_pCFont );
}
COLORREF CStaticEx::bkColor( COLORREF crColor )
{
_ASSERT(::IsWindow(m_hWnd));
COLORREF cr = m_crBkColor;
m_crBkColor = crColor;
m_brBkGround.DeleteObject();
CreateBrushType();
Invalidate();
return cr;
}
COLORREF CStaticEx::textColor( COLORREF crColor )
{
_ASSERT(::IsWindow(m_hWnd));
COLORREF cr = m_crTextColor;
m_crTextColor = crColor;
Invalidate();
return cr;
}
COLORREF CStaticEx::setLinkColorVisited( COLORREF crColor )
{
COLORREF c = m_crOnClickColor;
m_crOnClickColor = crColor;
return c;
}
COLORREF CStaticEx::setLinkColorUnvisited( COLORREF crColor )
{
m_crTextColor = crColor;
return textColor( crColor );
}
BOOL CStaticEx::CreateBrushType()
{
return m_brBkGround.CreateSolidBrush( m_crBkColor );
}
void CStaticEx::onClickDoShellCommand( const CString& linkAddress /* = "bberry@javanet.com" */ )
{
m_shellCommandArg = linkAddress;
}
HBRUSH CStaticEx::CtlColor(CDC* pDC, UINT nCtlColor)
{
// Setup for receiving mouse input; we only turn it
// on if it is needed...
//
if ( !m_shellCommandArg.IsEmpty() )
{
doOnClickEvents();
pDC->SetTextColor( m_didClickEvent ? m_crOnClickColor : m_crTextColor );
}
else
pDC->SetTextColor( m_crTextColor );
pDC->SetBkColor ( m_crBkColor );
return (HBRUSH)m_brBkGround;
}
void CStaticEx::OnClicked()
{
if ( m_showThisCwnd )
{
if ( m_showThisCwnd->IsWindowVisible() )
m_showThisCwnd->ShowWindow( SW_HIDE );
else
m_showThisCwnd->ShowWindow( SW_SHOW );
}
if ( m_dialog )
{
m_dialog->DoModal();
}
if ( !m_shellCommandArg.IsEmpty() )
{
// Call ShellExecute to run the link...
//
HINSTANCE h = ShellExecute( 0, "open", m_shellCommandArg, 0, 0, SW_SHOWNORMAL );
if ( (UINT)h > 32 ) {
m_didClickEvent = TRUE;
Invalidate();
}
else {
MessageBeep(0);
AfxMessageBox( "Unable to open " + m_shellCommandArg + '.', MB_OK | MB_ICONINFORMATION );
}
}
if ( m_wm_message )
{
::SendMessage( m_sendMsgToThisCwnd->m_hWnd, m_wm_message, m_msg_flags, 0 );
}
}
BOOL CStaticEx::OnSetCursor( CWnd* pWnd, UINT nHitTest, UINT message )
{
HCURSOR hCursor;
if ( m_doCustomCursor )
{
hCursor = AfxGetApp()->LoadCursor( IDC_CURSOR_HAND );
}
else
{
hCursor = AfxGetApp()->LoadStandardCursor( IDC_ARROW );
}
_ASSERT( hCursor );
::SetCursor( hCursor );
return TRUE;
}

复制代码

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