ext/ResizableLib/ResizableMDIFrame.cpp

   1 // ResizableMDIFrame.cpp : implementation file
   2 //
   3 /////////////////////////////////////////////////////////////////////////////
   4 //
   5 // This file is part of ResizableLib
   6 // http://sourceforge.net/projects/resizablelib
   7 //
   8 // Copyright (C) 2000-2004 by Paolo Messina
   9 // http://www.geocities.com/ppescher - mailto:ppescher@hotmail.com
  10 //
  11 // The contents of this file are subject to the Artistic License (the "License").
  12 // You may not use this file except in compliance with the License.
  13 // You may obtain a copy of the License at:
  14 // http://www.opensource.org/licenses/artistic-license.html
  15 //
  16 // If you find this code useful, credits would be nice!
  17 //
  18 /////////////////////////////////////////////////////////////////////////////
  19
  20 #include "stdafx.h"
  21 #include "ResizableMDIFrame.h"
  22
  23 #ifdef _DEBUG
  24 #define new DEBUG_NEW
  25 #undef THIS_FILE
  26 static char THIS_FILE[] = __FILE__;
  27 #endif
  28
  29 /////////////////////////////////////////////////////////////////////////////
  30 // CResizableMDIFrame
  31
  32 IMPLEMENT_DYNCREATE(CResizableMDIFrame, CMDIFrameWnd)
  33
  34 CResizableMDIFrame::CResizableMDIFrame()
  35 {
  36         m_bEnableSaveRestore = FALSE;
  37 }
  38
  39 CResizableMDIFrame::~CResizableMDIFrame()
  40 {
  41 }
  42
  43
  44 BEGIN_MESSAGE_MAP(CResizableMDIFrame, CMDIFrameWnd)
  45         //{{AFX_MSG_MAP(CResizableMDIFrame)
  46         ON_WM_GETMINMAXINFO()
  47         ON_WM_DESTROY()
  48         ON_WM_NCCREATE()
  49         ON_WM_WINDOWPOSCHANGING()
  50         //}}AFX_MSG_MAP
  51 END_MESSAGE_MAP()
  52
  53 /////////////////////////////////////////////////////////////////////////////
  54 // CResizableMDIFrame message handlers
  55
  56 void CResizableMDIFrame::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI)
  57 {
  58         // MDI should call default implementation
  59         CMDIFrameWnd::OnGetMinMaxInfo(lpMMI);
  60
  61         MinMaxInfo(lpMMI);
  62
  63         BOOL bMaximized = FALSE;
  64         CMDIChildWnd* pChild = MDIGetActive(&bMaximized);
  65         if (pChild != NULL && bMaximized)
  66                 ChainMinMaxInfo(lpMMI, this, pChild);
  67 }
  68
  69 // NOTE: this must be called after setting the layout
  70 //       to have the view and its controls displayed properly
  71 BOOL CResizableMDIFrame::EnableSaveRestore(LPCTSTR pszSection, BOOL bRectOnly)
  72 {
  73         m_sSection = pszSection;
  74
  75         m_bEnableSaveRestore = TRUE;
  76         m_bRectOnly = bRectOnly;
  77
  78         // restore immediately
  79         return LoadWindowRect(pszSection, bRectOnly);
  80 }
  81
  82 void CResizableMDIFrame::OnDestroy()
  83 {
  84         if (m_bEnableSaveRestore)
  85                 SaveWindowRect(m_sSection, m_bRectOnly);
  86
  87         CMDIFrameWnd::OnDestroy();
  88 }
  89
  90 BOOL CResizableMDIFrame::OnNcCreate(LPCREATESTRUCT lpCreateStruct)
  91 {
  92         if (!CMDIFrameWnd::OnNcCreate(lpCreateStruct))
  93                 return FALSE;
  94
  95         MakeResizable(lpCreateStruct);
  96
  97         return TRUE;
  98 }
  99
 100 LRESULT CResizableMDIFrame::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
 101 {
 102         if (message != WM_NCCALCSIZE || wParam == 0)
 103                 return CMDIFrameWnd::WindowProc(message, wParam, lParam);
 104
 105         // specifying valid rects needs controls already anchored
 106         LRESULT lResult = 0;
 107         HandleNcCalcSize(FALSE, (LPNCCALCSIZE_PARAMS)lParam, lResult);
 108         lResult = CMDIFrameWnd::WindowProc(message, wParam, lParam);
 109         HandleNcCalcSize(TRUE, (LPNCCALCSIZE_PARAMS)lParam, lResult);
 110         return lResult;
 111 }
 112
 113 void CResizableMDIFrame::OnWindowPosChanging(WINDOWPOS FAR* lpwndpos)
 114 {
 115         CMDIFrameWnd::OnWindowPosChanging(lpwndpos);
 116
 117         // since this window class doesn't have the style CS_HREDRAW|CS_VREDRAW
 118         // the client area is not invalidated during a resize operation and
 119         // this prevents the system from using WM_NCCALCSIZE to validate rects
 120         Invalidate();
 121 }