btnst.cpp

VC＋＋开发的一个电话录音程序

#include "stdafx.h"
#include "BtnST.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CButtonST

// Mask for control's type
#define BS_TYPEMASK SS_TYPEMASK

CButtonST::CButtonST()
{
	m_bIsPressed		= FALSE;
	m_bIsFocused		= FALSE;
	m_bIsDisabled		= FALSE;
	m_bMouseOnButton	= FALSE;

	FreeResources(FALSE);

	// Default type is "flat" button
	m_bIsFlat = TRUE;
	// Button will be tracked also if when the window is inactive (like Internet Explorer)
	m_bAlwaysTrack = TRUE;
  
	// By default draw border in "flat" button 
	m_bDrawBorder = TRUE; 
  
	// By default icon is aligned horizontally
	m_byAlign = ST_ALIGN_HORIZ; 
  
	// By default, for "flat" button, don't draw the focus rect
	m_bDrawFlatFocus = FALSE;

	// By default the button is not the default button
	m_bIsDefault = FALSE;
	// Invalid value, since type still unknown
	m_nTypeStyle = BS_TYPEMASK;

	// By default the button is not a checkbox
	m_bIsCheckBox = FALSE;
	m_nCheck = 0;

	// Set default colors
	SetDefaultColors(FALSE);

	// No tooltip created
	m_ToolTip.m_hWnd = NULL;

	// Do not draw as a transparent button
	m_bDrawTransparent = FALSE;
	m_pbmpOldBk = NULL;

	// No URL defined
	SetURL(NULL);

	// No cursor defined
	m_hCursor = NULL;

	// No associated menu
#ifndef	BTNST_USE_BCMENU
	m_hMenu = NULL;
#endif
	m_hParentWndMenu = NULL;
	m_bMenuDisplayed = FALSE;

	m_bShowDisabledBitmap = TRUE;
} // End of CButtonST

CButtonST::~CButtonST()
{
	// Restore old bitmap (if any)
	if (m_dcBk.m_hDC && m_pbmpOldBk)
	{
		m_dcBk.SelectObject(m_pbmpOldBk);
	} // if

	FreeResources();

	// Destroy the cursor (if any)
	if (m_hCursor) ::DestroyCursor(m_hCursor);

	// Destroy the menu (if any)
#ifdef	BTNST_USE_BCMENU
	if (m_menuPopup.m_hMenu)	m_menuPopup.DestroyMenu();
#else
	if (m_hMenu)	::DestroyMenu(m_hMenu);
#endif
} // End of ~CButtonST

BEGIN_MESSAGE_MAP(CButtonST, CButton)
    //{{AFX_MSG_MAP(CButtonST)
	ON_WM_SETCURSOR()
	ON_WM_KILLFOCUS()
	ON_WM_MOUSEMOVE()
	ON_WM_SYSCOLORCHANGE()
	ON_CONTROL_REFLECT_EX(BN_CLICKED, OnClicked)
	ON_WM_ACTIVATE()
	ON_WM_ENABLE()
	ON_WM_CANCELMODE()
	ON_WM_GETDLGCODE()
	ON_WM_CTLCOLOR_REFLECT()
	//}}AFX_MSG_MAP
#ifdef	BTNST_USE_BCMENU
	ON_WM_MENUCHAR()
	ON_WM_MEASUREITEM()
#endif

	ON_MESSAGE(BM_SETSTYLE, OnSetStyle)
	ON_MESSAGE(WM_MOUSELEAVE, OnMouseLeave)
	ON_MESSAGE(BM_SETCHECK, OnSetCheck)
	ON_MESSAGE(BM_GETCHECK, OnGetCheck)
END_MESSAGE_MAP()

void CButtonST::FreeResources(BOOL bCheckForNULL)
{
	if (bCheckForNULL)
	{
		// Destroy icons
		// Note: the following two lines MUST be here! even if
		// BoundChecker says they are unnecessary!
		if (m_csIcons[0].hIcon)	::DestroyIcon(m_csIcons[0].hIcon);
		if (m_csIcons[1].hIcon)	::DestroyIcon(m_csIcons[1].hIcon);

		// Destroy bitmaps
		if (m_csBitmaps[0].hBitmap)	::DeleteObject(m_csBitmaps[0].hBitmap);
		if (m_csBitmaps[1].hBitmap)	::DeleteObject(m_csBitmaps[1].hBitmap);

		// Destroy mask bitmaps
		if (m_csBitmaps[0].hMask)	::DeleteObject(m_csBitmaps[0].hMask);
		if (m_csBitmaps[1].hMask)	::DeleteObject(m_csBitmaps[1].hMask);
	} // if

	::ZeroMemory(&m_csIcons, sizeof(m_csIcons));
	::ZeroMemory(&m_csBitmaps, sizeof(m_csBitmaps));
} // End of FreeResources

void CButtonST::PreSubclassWindow() 
{
	UINT nBS;

	nBS = GetButtonStyle();

	// Set initial control type
	m_nTypeStyle = nBS & BS_TYPEMASK;

	// Check if this is a checkbox
	if (nBS & BS_CHECKBOX) m_bIsCheckBox = TRUE;

	// Set initial default state flag
	if (m_nTypeStyle == BS_DEFPUSHBUTTON)
	{
		// Set default state for a default button
		m_bIsDefault = TRUE;

		// Adjust style for default button
		m_nTypeStyle = BS_PUSHBUTTON;
	} // If

	// You should not set the Owner Draw before this call
	// (don't use the resource editor "Owner Draw" or
	// ModifyStyle(0, BS_OWNERDRAW) before calling PreSubclassWindow() )
	ASSERT(m_nTypeStyle != BS_OWNERDRAW);

	// Switch to owner-draw
	ModifyStyle(BS_TYPEMASK, BS_OWNERDRAW, SWP_FRAMECHANGED);

	CButton::PreSubclassWindow();
} // End of PreSubclassWindow

UINT CButtonST::OnGetDlgCode() 
{
	UINT nCode = CButton::OnGetDlgCode();

	// Tell the system if we want default state handling
	// (losing default state always allowed)
	nCode |= (m_bIsDefault ? DLGC_DEFPUSHBUTTON : DLGC_UNDEFPUSHBUTTON);

	return nCode;
} // End of OnGetDlgCode

BOOL CButtonST::PreTranslateMessage(MSG* pMsg) 
{
	InitToolTip();
	m_ToolTip.RelayEvent(pMsg);
	
	return CButton::PreTranslateMessage(pMsg);
} // End of PreTranslateMessage

LRESULT CButtonST::DefWindowProc(UINT message, WPARAM wParam, LPARAM lParam) 
{
	if (message == WM_LBUTTONDBLCLK)
	{
		message = WM_LBUTTONDOWN;
	} // if
	/*
	switch (message)
	{
		case WM_LBUTTONDBLCLK:
			message = WM_LBUTTONDOWN;
			break;
		case WM_MOVE:
			CRect rect;

			GetClientRect(&rect);
			if (::IsWindow(m_ToolTip.m_hWnd))
			{
				if (m_ToolTip.GetToolCount() != 0)
					m_ToolTip.SetToolRect(this, 1, &rect);
			} // if
			break;
	} // switch
	*/
	return CButton::DefWindowProc(message, wParam, lParam);
} // End of DefWindowProc

HBRUSH CButtonST::CtlColor(CDC* pDC, UINT nCtlColor) 
{
	return (HBRUSH)::GetStockObject(NULL_BRUSH); 
} // End of CtlColor

void CButtonST::OnSysColorChange() 
{
	CButton::OnSysColorChange();

	m_dcBk.DeleteDC();
	m_bmpBk.DeleteObject();	
} // End of OnSysColorChange

LRESULT CButtonST::OnSetStyle(WPARAM wParam, LPARAM lParam)
{
	UINT nNewType = (wParam & BS_TYPEMASK);

	// Update default state flag
	if (nNewType == BS_DEFPUSHBUTTON)
	{
		m_bIsDefault = TRUE;
	} // if
	else if (nNewType == BS_PUSHBUTTON)
	{
		// Losing default state always allowed
		m_bIsDefault = FALSE;
	} // if

	// Can't change control type after owner-draw is set.
	// Let the system process changes to other style bits
	// and redrawing, while keeping owner-draw style
	return DefWindowProc(BM_SETSTYLE,
		(wParam & ~BS_TYPEMASK) | BS_OWNERDRAW, lParam);
} // End of OnSetStyle

LRESULT CButtonST::OnSetCheck(WPARAM wParam, LPARAM lParam)
{
	ASSERT(m_bIsCheckBox);

	switch (wParam)
	{
		case BST_CHECKED:
		case BST_INDETERMINATE:	// Indeterminate state is handled like checked state
			SetCheck(1);
			break;
		default:
			SetCheck(0);
			break;
	} // switch

	return 0;
} // End of OnSetCheck

LRESULT CButtonST::OnGetCheck(WPARAM wParam, LPARAM lParam)
{
	ASSERT(m_bIsCheckBox);
	return GetCheck();
} // End of OnGetCheck

#ifdef	BTNST_USE_BCMENU
LRESULT CButtonST::OnMenuChar(UINT nChar, UINT nFlags, CMenu* pMenu) 
{
	LRESULT lResult;
	if (BCMenu::IsMenu(pMenu))
		lResult = BCMenu::FindKeyboardShortcut(nChar, nFlags, pMenu);
	else
		lResult = CButton::OnMenuChar(nChar, nFlags, pMenu);
	return lResult;
} // End of OnMenuChar
#endif

#ifdef	BTNST_USE_BCMENU
void CButtonST::OnMeasureItem(int nIDCtl, LPMEASUREITEMSTRUCT lpMeasureItemStruct) 
{
	BOOL bSetFlag = FALSE;
	if (lpMeasureItemStruct->CtlType == ODT_MENU)
	{
		if (IsMenu((HMENU)lpMeasureItemStruct->itemID) && BCMenu::IsMenu((HMENU)lpMeasureItemStruct->itemID))
		{
			m_menuPopup.MeasureItem(lpMeasureItemStruct);
			bSetFlag = TRUE;
		} // if
	} // if
	if (!bSetFlag) CButton::OnMeasureItem(nIDCtl, lpMeasureItemStruct);
} // End of OnMeasureItem
#endif

void CButtonST::OnEnable(BOOL bEnable) 
{
	CButton::OnEnable(bEnable);
	
	if (bEnable == FALSE)	
	{
		CWnd*	pWnd = GetParent()->GetNextDlgTabItem(this);
		if (pWnd)
			pWnd->SetFocus();
		else
			GetParent()->SetFocus();

		CancelHover();
	} // if
} // End of OnEnable

void CButtonST::OnKillFocus(CWnd * pNewWnd)
{
	CButton::OnKillFocus(pNewWnd);
	CancelHover();
} // End of OnKillFocus

void CButtonST::OnActivate(UINT nState, CWnd* pWndOther, BOOL bMinimized) 
{
	CButton::OnActivate(nState, pWndOther, bMinimized);
	if (nState == WA_INACTIVE)	CancelHover();
} // End of OnActivate

void CButtonST::OnCancelMode() 
{
	CButton::OnCancelMode();
	CancelHover();
} // End of OnCancelMode

BOOL CButtonST::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) 
{
	// If a cursor was specified then use it!
	if (m_hCursor != NULL)
	{
		::SetCursor(m_hCursor);
		return TRUE;
	} // if

	return CButton::OnSetCursor(pWnd, nHitTest, message);
} // End of OnSetCursor

void CButtonST::CancelHover()
{
	// Only for flat buttons
	if (m_bIsFlat)
	{
		if (m_bMouseOnButton)
		{
			m_bMouseOnButton = FALSE;
			Invalidate();
		} // if
	} // if
} // End of CancelHover

void CButtonST::OnMouseMove(UINT nFlags, CPoint point)
{
	CWnd*				wndUnderMouse = NULL;
	CWnd*				wndActive = this;
	TRACKMOUSEEVENT		csTME;

	CButton::OnMouseMove(nFlags, point);

	ClientToScreen(&point);
	wndUnderMouse = WindowFromPoint(point);

	// If the mouse enter the button with the left button pressed then do nothing
	if (nFlags & MK_LBUTTON && m_bMouseOnButton == FALSE) return;

	// If our button is not flat then do nothing
	if (m_bIsFlat == FALSE) return;

	if (m_bAlwaysTrack == FALSE)	wndActive = GetActiveWindow();

	if (wndUnderMouse && wndUnderMouse->m_hWnd == m_hWnd && wndActive)
	{
		if (!m_bMouseOnButton)
		{
			m_bMouseOnButton = TRUE;

			Invalidate();

			csTME.cbSize = sizeof(csTME);
			csTME.dwFlags = TME_LEAVE;
			csTME.hwndTrack = m_hWnd;
			::_TrackMouseEvent(&csTME);
		} // if
	} else CancelHover();
} // End of OnMouseMove

// Handler for WM_MOUSELEAVE
LRESULT CButtonST::OnMouseLeave(WPARAM wParam, LPARAM lParam)
{
	CancelHover();
	return 0;
} // End of OnMouseLeave

BOOL CButtonST::OnClicked() 
{	
	SetFocus();

	if (m_bIsCheckBox)
	{
		m_nCheck = !m_nCheck;
		Invalidate();
	} // if
	else
	{
		// Handle the menu (if any)
#ifdef	BTNST_USE_BCMENU
		if (m_menuPopup.m_hMenu)
#else
		if (m_hMenu)
#endif
		{
			CRect	rWnd;
			GetWindowRect(rWnd);

			m_bMenuDisplayed = TRUE;
			Invalidate();

#ifdef	BTNST_USE_BCMENU
			BCMenu *psub = (BCMenu*)m_menuPopup.GetSubMenu(0);
			DWORD dwRetValue = psub->TrackPopupMenu(TPM_LEFTALIGN | TPM_LEFTBUTTON | TPM_RIGHTBUTTON | TPM_NONOTIFY | TPM_RETURNCMD, rWnd.left, rWnd.bottom, this, NULL);
#else
			HMENU hSubMenu = ::GetSubMenu(m_hMenu, 0);
			//DWORD dwRetValue = ::TrackPopupMenuEx(hSubMenu, TPM_LEFTALIGN | TPM_LEFTBUTTON, rWnd.left, rWnd.bottom, m_hParentWndMenu, NULL);
			DWORD dwRetValue = ::TrackPopupMenuEx(hSubMenu, TPM_LEFTALIGN | TPM_LEFTBUTTON | TPM_RIGHTBUTTON | TPM_NONOTIFY | TPM_RETURNCMD, rWnd.left, rWnd.bottom, m_hParentWndMenu, NULL);
#endif

			m_bMenuDisplayed = FALSE;
			Invalidate();

			if (dwRetValue)
				::PostMessage(m_hParentWndMenu, WM_COMMAND, MAKEWPARAM(dwRetValue, 0), (LPARAM)NULL);
		} // if
		else
		{
			// Handle the URL (if any)
			if (_tcslen(m_szURL) > 0)
			{
				SHELLEXECUTEINFO	csSEI;

				memset(&csSEI, 0, sizeof(csSEI));
				csSEI.cbSize = sizeof(SHELLEXECUTEINFO);
				csSEI.fMask = SEE_MASK_FLAG_NO_UI;
				csSEI.lpVerb = _T("open");
				csSEI.lpFile = m_szURL;
				csSEI.nShow = SW_SHOWMAXIMIZED;
				::ShellExecuteEx(&csSEI);
			} // if
		} // else
	} // else

	return FALSE;
} // End of OnClicked

void CButtonST::DrawItem(LPDRAWITEMSTRUCT lpDIS)
{
	CDC*	pDC = CDC::FromHandle(lpDIS->hDC);
	CPen*	pOldPen;