A Freeware MFC PushPin property page dialog class(19KB)

/* Module : PUSHPINFRAME.CPP Purpose: Implementation of a push pin property dialog similar to the ones seen in VC 4/5 Created: PJN / 24-11-1997 History: PJN / 16-04-1998 window now only closes if the window which is going active is owned by the same parent as the pushpin frame PJN / 01-06-1999 1. Now supports changing the attached property sheet through the new ChangeAttachPropertySheet function. 2. Did a bit of a tidy up of the source code PJN / 02-06-1999 1. Updated code to work with the new v1.12 release of CPushPinButton 2. Removed a number of unnecessary comments in the code. 3. Renamed a number of project files and workspace files to be more descriptive. 4. Update a number of bugs / errors in this help file. 5. Fixed a small clipping bug where the push pin was being clipped by the edge of the property sheet Copyright (c) 1997 - 1999 by PJ Naughter. All rights reserved. */ ///////////////////////////////// Includes ////////////////////////////////// #include "stdafx.h" #include "resource.h" #include "PushPinFrame.h" ////////////////////////////////// Macros /////////////////////////////////// #ifdef _DEBUG #undef THIS_FILE static char BASED_CODE THIS_FILE[] = __FILE__; #endif const int PUSHPIN_SHEET_EDGE = 24; //the horizontal offset of the property sheet //from the edge of the frame window ////////////////////////////////// Implementation ///////////////////////////// IMPLEMENT_DYNCREATE(CPushPinFrame, CFrameWnd) CPushPinFrame::CPushPinFrame() { m_pModelessPropSheet = NULL; m_pRuntimeModelessPropSheet = NULL; } CPushPinFrame::~CPushPinFrame() { } BEGIN_MESSAGE_MAP(CPushPinFrame, CFrameWnd) //{{AFX_MSG_MAP(CPushPinFrame) ON_WM_CREATE() ON_WM_CLOSE() ON_WM_ACTIVATE() ON_WM_PAINT() ON_WM_DESTROY() //}}AFX_MSG_MAP END_MESSAGE_MAP() void CPushPinFrame::SetAttachedPropertySheet(CRuntimeClass* pRuntimeModelessPropSheet) { //Validate our parameters ASSERT(pRuntimeModelessPropSheet); ASSERT(pRuntimeModelessPropSheet->IsDerivedFrom(RUNTIME_CLASS(CPropertySheet))); m_pRuntimeModelessPropSheet = pRuntimeModelessPropSheet; } BOOL CPushPinFrame::ChangeAttachedPropertySheet(CRuntimeClass* pRuntimePropSheet) { //Close and delete the old property sheet ASSERT(m_pModelessPropSheet); //Must have been created to change it m_pModelessPropSheet->SendMessage(WM_CLOSE); delete m_pModelessPropSheet; m_pModelessPropSheet = NULL; //Hive away the runtime class SetAttachedPropertySheet(pRuntimePropSheet); //Create the new property sheet m_pModelessPropSheet = (CPropertySheet*) pRuntimePropSheet->CreateObject(); ASSERT(m_pModelessPropSheet); //Your class is probably not DECLARE_DYNCREATE ASSERT(m_pModelessPropSheet->IsKindOf(RUNTIME_CLASS(CPropertySheet))); if (!m_pModelessPropSheet->Create(this, WS_CHILD | WS_VISIBLE,0)) { delete m_pModelessPropSheet; m_pModelessPropSheet = NULL; SetRedraw(TRUE); return FALSE; } //Move the property sheet into the same place as the first propery sheet m_pModelessPropSheet->SetWindowPos(NULL, m_RectPropSheet.left, m_RectPropSheet.top, m_RectPropSheet.Width(), m_RectPropSheet.Height(), SWP_NOZORDER | SWP_NOACTIVATE); return TRUE; } int CPushPinFrame::OnCreate(LPCREATESTRUCT lpCreateStruct) { //Let the parent class do its thing if (CFrameWnd::OnCreate(lpCreateStruct) == -1) return -1; //Validate our variables ASSERT(m_pModelessPropSheet == NULL); ASSERT(m_pRuntimeModelessPropSheet); //You forgot to call SetAttachedPropertySheet before creation !! //create the property page as a child of this frame window m_pModelessPropSheet = (CPropertySheet*) m_pRuntimeModelessPropSheet->CreateObject(); ASSERT(m_pModelessPropSheet); //Your class is probably not DECLARE_DYNCREATE ASSERT(m_pModelessPropSheet->IsKindOf(RUNTIME_CLASS(CPropertySheet))); if (!m_pModelessPropSheet->Create(this, WS_CHILD | WS_VISIBLE, 0)) { delete m_pModelessPropSheet; m_pModelessPropSheet = NULL; return -1; } // Resize the mini frame so that it fits around the child property // sheet with space for the push pin in top left hand corner CRect rectClient; m_pModelessPropSheet->GetWindowRect(rectClient); rectClient.right += PUSHPIN_SHEET_EDGE; m_RectPropSheet = rectClient; // CFrameWnd::CalcWindowRect adds the extra width and height needed from the mini frame. CalcWindowRect(m_RectPropSheet); //Resize this window to suit the property sheet SetWindowPos(NULL, m_RectPropSheet.left, m_RectPropSheet.top, m_RectPropSheet.Width(), m_RectPropSheet.Height(), SWP_NOZORDER | SWP_NOACTIVATE); //Move the property sheet into place m_RectPropSheet.left += PUSHPIN_SHEET_EDGE; m_pModelessPropSheet->SetWindowPos(NULL, m_RectPropSheet.left, m_RectPropSheet.top, m_RectPropSheet.Width(), m_RectPropSheet.Height(), SWP_NOZORDER | SWP_NOACTIVATE); //Create the push pin in the top left hand corner of the frame window m_PushPin.Create(_T(""), BS_OWNERDRAW | WS_CHILD | WS_VISIBLE, CRect(2, 8, 0, 0), this, 100); m_PushPin.SetPinned(TRUE); m_PushPin.SetUseEdgeBitmap(TRUE); return 0; } void CPushPinFrame::OnClose() { // Instead of closing the modeless property sheet, just hide it. ShowWindow(SW_HIDE); } void CPushPinFrame::OnActivate(UINT nState, CWnd* pWndOther, BOOL bMinimized) { //Let the parent class do its thing CFrameWnd::OnActivate(nState, pWndOther, bMinimized); // Forward any WM_ACTIVATEs to the property sheet... // Like the dialog manager itself, it needs them to save/restore the focus. ASSERT_VALID(m_pModelessPropSheet); // Use GetCurrentMessage to get unmodified message data. const MSG* pMsg = GetCurrentMessage(); ASSERT(pMsg->message == WM_ACTIVATE); m_pModelessPropSheet->SendMessage(pMsg->message, pMsg->wParam, pMsg->lParam); //if we lose activation and we are not pinned and //the other window is an owned by the same toplevel window //then close this window if (nState == WA_INACTIVE && !m_PushPin.IsPinned() && OwnedBySameParent(pWndOther)) PostMessage(WM_CLOSE); } BOOL CPushPinFrame::OwnedBySameParent(CWnd* pWnd) { if (!pWnd) return FALSE; return (GetTopLevelOwner()->GetSafeHwnd() == pWnd->GetTopLevelOwner()->GetSafeHwnd()); } void CPushPinFrame::OnPaint() { CPaintDC dc(this); // device context for painting //Paint the client area of the frame window with //the 3d color to make it look like a modal //propery sheet CRect r; GetClientRect(&r); dc.FillSolidRect(r, GetSysColor(COLOR_3DFACE)); } BOOL CPushPinFrame::PreCreateWindow(CREATESTRUCT& cs) { //modify the styles to make the frame window //like a modal property sheet // WS_4THICKFRAME and MFS_THICKFRAME imply WS_THICKFRAME if (cs.style & (MFS_4THICKFRAME | MFS_THICKFRAME)) cs.style |= WS_THICKFRAME; // WS_CAPTION implies WS_EX_TOOLWINDOW if (cs.style & WS_CAPTION) cs.dwExStyle |= WS_EX_TOOLWINDOW; //Let the parent class do its thing BOOL bSuccess = CFrameWnd::PreCreateWindow(cs); VERIFY(bSuccess); cs.dwExStyle &= ~(WS_EX_CLIENTEDGE); return bSuccess; } void CPushPinFrame::OnDestroy() { //Ensure the property sheet has been cleaned up ASSERT(m_pModelessPropSheet != NULL); m_pModelessPropSheet->SendMessage(WM_CLOSE); delete m_pModelessPropSheet; m_pModelessPropSheet = NULL; //Let the parent do its thing CFrameWnd::OnDestroy(); }